Data ONTAP Release Notes for 7-Mode

Transcription

1 IBM System Storage N series Data ONTAP Release Notes for 7-Mode GA

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3 Contents Data ONTAP for 7-Mode Release Notes Changes introduced since Data ONTAP Changes in Data ONTAP for 7-Mode Changes in Data ONTAP for 7-Mode Changes in Data ONTAP for 7-Mode Changes in Data ONTAP for 7-Mode Unsupported features New and changed features in the Data ONTAP 8.1 release family New and changed platform and hardware support Support for Flash Cache 2 modules Support for 800-GB SSDs Support for SAS optical cables Support for 1.2-TB performance disks Support for N Support for N Support for 200-GB SSDs Support for 4-TB NL-SAS disks Support for the 10-GbE mezzanine card with N Support for the N3150, N3220, and N3240 platforms Support for systems with only SSDs Support for 900-GB performance disks Support for IOM6 (FC2099) for the EXN3000 storage expansion unit Support for the EXN3200 storage expansion unit Support for SAS tape dries Systems including EXN2000 storage expansion units with ESH2 modules Support for FC/SAS bridge (ATTO for IBM FibreBridge 6500N) Manageability enhancements Storage resource management enhancements High-aailability pair (formerly actie/actie configuration) enhancements Networking and security protocol enhancements File access protocol enhancements Data protection enhancements Storage efficiency enhancements MultiStore enhancements Gateway enhancements New and changed features in the Data ONTAP 8.0 release family New and changed platform and hardware support Support for the N6200 series Support for the N7x50T system Support for 1-TB Flash Cache modules Support for 512-GB and 256-GB Performance Acceleration Module (PAM II) Support for SSDs Supported tape dries Support for 3-TB capacity disks Support for 2-TB capacity disks Changes in storage expansion unit support Support for EXN3500 storage expansion units Support for EXN3000 storage expansion units Manageability enhancements Reersion and downgrade support Copyright IBM Corp iii

4 Default security settings for manageability protocols Requirement to set root account password Uses of the systemshell and the diagnostic account Boot menu enhancements and changes Supported OpenSSH client ersions Root aggregate Snapshot resere alues reduced Storage resource management enhancements Support for 64-bit aggregates Data compression support File space utilization report Upgrading to Data ONTAP increases olume capacity after deduplication Maximum simultaneous FlexClone file or FlexClone LUN operations per storage system Support for FlexClone files and FlexClone LUNs on Filer units Increased maximum RAID group size for capacity disks Ability to decrease maxfiles High-aailability pair enhancements HA pair terminology changes Networking and security protocol enhancements Ability to block data traffic on the e0m interface Support for CDP Port-based load-balancing option for multimode interface groups TSO in NICs bit SNMP object identifiers (OIDs) are supported Configuration for receiing untagged traffic on VLAN tagged interfaces Vifs are now known as interface groups File access protocol enhancements Support for multiple open instances of the SMB named pipe on an FPolicy serer Block protocol enhancements iscsi RADIUS support Support for Data Motion for Volumes VMware VAAI features for ESX hosts support igroup scalability limits Data protection enhancements SnapVault update schedules for olume SnapMirror destination backups Support for 840 disk dries on fabric-attached MetroCluster configuration Support for out-of-order frame deliery for SnapMirror oer Fibre Channel Support for SnapMirror relationship between two FlexClone olumes Support for SnapMirror network compression Support for designated range of ports for NDMP data connections If olumes with deduplication exceed the maximum supported size NearStore license is not required for deduplication Maximum concurrent deduplication operations supported Prerequisite for backing up data to tape using NDMP serices Snapshot copy schedules SnapMirror support for 64-bit olumes SnapVault support for 64-bit olumes Changes to the Data ONTAP and gateway libraries New and changed commands and options in the Data ONTAP 8.1 release family operating in 7-Mode New commands in the Data ONTAP 8.1 release family Changed commands in the Data ONTAP 8.1 release family Replaced or remoed commands in the Data ONTAP 8.1 operating in 7-Mode release family New options in the Data ONTAP 8.1 release family Changed options in Data ONTAP 8.1 release family New and changed commands and options in the Data ONTAP Mode release New commands in Data ONTAP Mode Changed commands in the Data ONTAP Mode release family Replaced or remoed commands in the Data ONTAP Mode release family i IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

5 New options in the Data ONTAP Mode release family Changed options in the Data ONTAP Mode release family Requirements for running Data ONTAP Mode Storage system firmware Gateway requirements and support information Important cautions Upgrade and reert cautions Setup cautions Manageability cautions Storage management cautions Network protocol cautions File access and protocols cautions SAN administration cautions Known problems and limitations Manageability issues Storage resource management issues Network protocol issues File access protocol issues SAN administration issues Data protection issues Third-party storage issues (Gateway systems only) MultiStore issues Changes to published documentation Copyright and trademark information Trademark information Notices Contents

6 i IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

7 Data ONTAP for 7-Mode Release Notes These Release Notes describe new features, enhancements, and known issues for this release of Data ONTAP, as well as additional information related to running this release on specific storage systems. About the Data ONTAP release Data ONTAP is a General Aailability (GA) release and the third maintenance release in the Data ONTAP 8.1.x release family. For more information about Data ONTAP releases, refer to the following publication: IBM System Storage N series Data ONTAP Release Model For up to date information regarding the latest release of Data ONTAP, refer to the following publication: If you are upgrading to this Data ONTAP release or reerting from this release to an earlier release, see the Data ONTAP Upgrade and Reert/Downgrade Guide for 7-Mode. Note: If you hae an N6210 or an N6040 storage system with Flash Cache modules, Data ONTAP and later 8.1.x releases reenables the 256-GB Flash Cache module on the N6210 or N6040 storage systems using the full capacity for wear-leeling and cache storage. Howeer, to delier on the full alue of Data ONTAP, the maximum working dataset in the 256-GB Flash Cache module on N6210 or N6040 storage systems is 128 GB. For more information, see N6210 series and N6040 series storage systems with Flash Cache modules are supported on page 93. For a complete list of functionality changes introduced in this release, see New and changed features in the Data ONTAP 8.1 release family on page 15. If you are upgrading from a Data ONTAP 7.3.x release, see also New and changed features in the Data ONTAP 8.0 release family on page 43. Some Data ONTAP features are not supported in this release. For more information, see Unsupported features on page 13. About these release notes All the information in this document applies to the Data ONTAP release and later for N series storage systems, also sometimes called filers or appliances and gateway systems, except where otherwise indicated. It is a best practice for all Data ONTAP users to see the following sections: If Data ONTAP is already running on storage systems in your enironment, you should familiarize yourself with releant topics before upgrading to Data ONTAP Copyright IBM Corp

8 This information helps you identify and resole issues that might affect the aailability of your systems. Check the online ersion of the Release Notes periodically for new cautions or updates that might hae been posted since you downloaded your software. Changes to published documentation on page 127 in these Release Notes. This release information became aailable after the set of guides proided with this release were published. Websites IBM maintains pages on the World Wide Web where you can get the latest technical information and download deice driers and updates. The following web pages proide N series information: A listing of currently aailable N series products and features can be found at the following web page: The IBM System Storage N series support website requires users to register in order to obtain access to N series support content on the web. To understand how the N series support web content is organized and naigated, and to access the N series support website, refer to the following publicly accessible web page: This web page also proides links to AutoSupport information as well as other important N series product resources. IBM System Storage N series products attach to a ariety of serers and operating systems. To determine the latest supported attachments, go to the IBM N series interoperability matrix at the following web page: For the latest N series hardware product documentation, including planning, installation and setup, and hardware monitoring, serice and diagnostics, see the IBM N series Information Center at the following web page: 2 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

9 Changes introduced since Data ONTAP 8.1 You can find information about the changes that were introduced with each release since Data ONTAP 8.1. Note: If you are new to the Data ONTAP 8.1 family, go directly to New and changed features in the Data ONTAP 8.1 release family on page 15. Changes in Data ONTAP for 7-Mode The Data ONTAP release includes the following changes. Changed options in Data ONTAP The following option is changed in this release: raid.disk.timeout.enable New cautions in Data ONTAP Data ONTAP includes the following new caution: Upgrade and reert cautions on page 88 Change in how Data ONTAP handles file names containing UTF-16 supplementary characters on page 89 Stale metadata not automatically remoed during deduplication operations on olume on page 89 New known problems and limitations in Data ONTAP File access protocol issues on page 116 Data ONTAP permits deleting a file when an alternate data stream of the file is in use on page 116 "Access denied" error when setting an ACL on the root directory of an empty share on page 116 Storage resource management issues on page 110 Long disk list for aggregate creation could cause disruption on page 111 Network protocol issues on page 113 ACP ARP entry update logs error message eery 10 minutes on page 113 SNMP3 access might fail for an existing user on page 114 Existing traphosts fail to receie SNMP traps on page 114 The first VLAN configured oer a port might bring the port down temporarily on page 114 Limitations remoed in Data ONTAP The following limitation are remoed in this release: File copy operation on a widelink path inside a CIFS share might fail when using SMB 2.x Domain controller responds with an access denied error to SMB 2.x tree connect request Copyright IBM Corp

10 Documentation changes for Data ONTAP Data ONTAP includes the following new information: Changes to the Data ONTAP Storage Management Guide for 7-Mode: Multi-disk carrier and single-disk carrier sheles can be combined in the same stack Changes to the Gateway Implementation Guide for Third-Party Storage Support for Hitachi storage array HUS VM Updates to required parameters information about HUS VM storage array Changes in Data ONTAP for 7-Mode The Data ONTAP release includes support for new hardware, software enhancements, and bug fixes. New hardware support in Data ONTAP Data ONTAP includes support for the following hardware: Support for Flash Cache 2 Modules Support for 800-GB SSDs Support for SAS optical cables on page 16 For more information, see New platform and hardware support. New and changed features in Data ONTAP Data ONTAP includes the following new and changed features: File access protocol enhancements Enhancements for management of unresponsie LDAP serers Data protection enhancements Restoring NFS4 Security Descriptors while performing Single File Snap Restore For information about all the new and changed features in this release, see New and changed features in the Data ONTAP Mode release family. Remoed commands in Data ONTAP No commands are remoed in this release. For information about other commands, see Changed commands in Data ONTAP 8.1 release family operating in 7-Mode. New options in Data ONTAP The following new options are added to this release: ldap.fast_timeout.enable ldap.retry_delay For more information, see New options in the Data ONTAP 8.1 release family operating in 7-Mode. 4 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

11 New known problems and limitations in Data ONTAP The following is the new known issue in this release: Data protection issues Volume migration by using the snapmirror migrate command leads to stale LUN maps Windows Security tab unaailable for shares with long UNC paths on page 117 Effectie style of qtrees created on an NTFS olume before configuring CIFS on page 119 Out of space errors could be returned when fractional resere is set to zero on page 110 Some Hitachi or HP XP array LUNs might not be isible on page 125 For more information about all the limitations in the Data ONTAP 8.1 release family for 7-Mode, see Known problems and limitations. Limitations remoed in Data ONTAP The following limitation has been remoed in this release: Value of the option nfs.ifc.rc.high is unexpectedly reset Documentation changes for Data ONTAP Data ONTAP includes the following new information: Changes to the High Aailability Configuration Guide on page 130 Information about SAS optical cable support for MetroCluster configuration Changes to the Data ONTAP Storage Management Guide for 7-Mode on page 131 Usable and physical disk capacity by disk size Changes to the File Access and Protocols Management Guide on page 134 Managing anonymous FTP access requires additional step Changes to the Gateway Implementation Guide for Third-Party Storage on page 138 Workaround when LUNs are not isible with Hitachi or HP XP storage arrays Changes in Data ONTAP for 7-Mode This release includes support for new enhancements. New hardware support in Data ONTAP Data ONTAP includes support for the following hardware: Support for N6220 on page 16 Support for N6250 on page 17 Support for 200-GB SSDs on page 17 Support for 4-TB NL-SAS disks on page 17 Support for the 10-GbE mezzanine card with N3150 on page 17 New and changed features in Data ONTAP Changes introduced since Data ONTAP 8.1 5

12 New and changed features include the following: Manageability enhancements on page 19 Options for specifying uppercase and lowercase requirements in user passwords on page 19 High-aailability pair (formerly actie/actie configuration) enhancements on page 28 Automatic gieback after takeoer due to panic on page 28 File access protocol enhancements on page 32 Support for the Manage Auditing and Security Logs GPO on page 33 Support for the Windows Owner Rights security principal on page 33 Enabling new EMS messages to help troubleshoot Kerberos issues on page 33 Gateway enhancements on page 41 Support for EMC VNX storage arrays on page 42 Support for storage array adanced features on page 42 For information about all new and changed features in this release, see New and changed features in the Data ONTAP 8.1 release family on page 15. New commands in Data ONTAP The following new commands are added to this release: bmc battery-info nfs storage stats For more information, see Changed commands in the Data ONTAP 8.1 release family on page 63 Changed commands in Data ONTAP The following commands changed in this release: halt setup New options in Data ONTAP The following new options are added to this release: cf.gieback.auto.after.panic.takeoer nfs.rpcsec.trace security.passwd.rules.minimum.lowercase security.passwd.rules.minimum.uppercase For more information, see New options in the Data ONTAP 8.1 release family on page 67 Changed options in Data ONTAP The following options changed in this release: cf.gieback.auto.attempts.minutes cf.gieback.auto.attempts.count 6 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

13 cf.gieback.auto.delay.seconds nfs.authsys.extended_groups_ns.queue_max nfs.4.id.allow_numerics New cautions in Data ONTAP The following new cautions are added in this release: Upgrade and reert cautions on page 88 Upgrade from 7.3.x to 8.1.x through intermediate upgrade with deduplication disabled can cause a system panic on page 92 Reert from Data ONTAP 8.1.x to Data ONTAP 8.0.x fails if fingerprint database size exceeds 256 GB on page 96 Downgrading to Data ONTAP 8.1 or earlier with a Flash Pool aggregate root aggregate disables the system on page 97 Storage management cautions on page 98 Disk failures might increase for some disk models after upgrading to this ersion of Data ONTAP on page 98 For more information about all the important cautions in the Data ONTAP 8.1 release family, see Important cautions. Cautions remoed in Data ONTAP The following cautions hae been remoed in this release: Automatic background disk firmware updates not enabled for non-mirrored RAID4 aggregates System panics when Flash Cache is full and the root olume is a traditional olume Preenting serice disruption when expanding an aggregate with olumes using quotas Changing the language of a FlexVol olume when expansion scanner is running could result in system disruption Some 32-bit operations cannot be performed on a Flash Pool Requirements for conerting an aggregate to a Flash Pool CIFS setup ia ONTAPI may lead to remoal of already existing user created cifs shares CIFS SID and Credential leak impacts cache memory aailability Storage system might panic when not specifying an export path Limitations remoed in Data ONTAP The following limitations hae been remoed in this release: Files might not be able to be deleted using NFS in a full FlexVol olume Disks might be silently left unassigned for multi-disk carrier sheles CIFS users cannot rename or delete home directories Storage system requests to Windows Serer 2008 might fail ADIC Quantum tape libraries are not discoered by Data ONTAP Tape deices behind Decru DataFort are not detected unless a known SCSI deice is mapped to LUN 0 Changes introduced since Data ONTAP 8.1 7

14 Possible gieback failure during controller or NVRAM8 replacement on N7x50T series or N6200 series systems saecore command not working Documentation changes for Data ONTAP The following information is new in this release: Changes to the System Administration Guide on page 127 Changes to the High Aailability Configuration Guide on page 130 Changes to the File Access and Protocols Management Guide on page 134 Changes to the Software Setup Guide on page 137 For more information about other important documentation changes, see Changes to published documentation. Changes in Data ONTAP for 7-Mode This release includes support for new hardware and software enhancements. New platform and hardware support in Data ONTAP Data ONTAP includes support for the following new platform and hardware: Support for the N3150, N3220, and N3240 platforms on page 17 Support for systems with only SSDs on page 17 Support for 900-GB performance disks on page 17 Support for IOM6 (FC2099) for the EXN3000 storage expansion unit on page 17 Support for the EXN3200 storage expansion unit on page 17 For more information, see New and changed platform and hardware support on page 16 New and changed features in Data ONTAP New and changed features include the following: Manageability enhancements Role-based access control for LDAP users' system access Support of core segments SP SSH access control and automatic timeout RLM SSH access control and automatic timeout SSH port forwarding for the SP is disabled by default on page 21 SSH port forwarding for the RLM is disabled by default Changes in aggregate Snapshot copy management Free space reallocation of aggregates SSH serer ersion for Data ONTAP Storage resource management enhancements Support for Flash pool aggregates on page 26 Support for the Adanced Zone Checksum type (AZCS) on page 26 Support for sanitizing SSDs 8 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

15 High-aailability pair (formerly actie/actie configuration) enhancements on page 28 MetroCluster support for Cisco switches File access protocol enhancements Support for SMB 2.1 Support for BranchCache Support for lease oplocks Enhancements to procedure for computer account password change Support for VMware Storage oer NFS Data protection enhancements SnapVault support for nondefault Filer units on page 37 Support for incremental and differential backups using SMTape engine Support for restore to olumes in 64-bit aggregates using SMTape engine MultiStore enhancements on page 40 Online migration support for Filer units on page 40 Storage efficiency enhancements Changes to deduplication For information about all new and changed features in this release, see New and changed features in the Data ONTAP 8.1 release family on page 15. New commands in Data ONTAP The following new commands were added to this release: cifs branchcache hash stat cifs branchcache set key coredump segment config modify coredump segment config show coredump segment delete coredump segment delete-all coredump segment show coredump segment start coredump segment status coredump segment stop storage shelf identify Changed commands in Data ONTAP The following commands are changed in this release: aggr options aggr status cifs shares df lock status qtree oplock storage show disk sysconfig Changes introduced since Data ONTAP 8.1 9

16 ol status For more information, see Changed commands in the Data ONTAP 8.1 release family on page 63. New options in Data ONTAP New options include the following: cifs.smb2_1.branch_cache.enable cifs.smb2_1.branch_cache.hash_time_out cifs.w2k_password_change cifs.w2k_password_change_interal cifs.w2k_password_change_within nfs.mount_rootonly nfs.2.enable nfs.4.id.allow_numerics nfs.storage.enable rlm.autologout.enable rlm.autologout.timeout rlm.ssh.access snapmirror.sm.olread.smtape_enable sp.autologout.enable sp.autologout.timeout sp.ssh.access For more information, see New options in the Data ONTAP 8.1 release family on page 67. Changed options in Data ONTAP The following options changed in this release: cifs.oplocks.enable cifs.smb2.client.enable cifs.smb2.durable_handle.enable cifs.smb2.durable_handle.timeout cifs.smb2.enable cifs.smb2.signing.required cifs.weekly_w2k_password_change security.admin.nsswitchgroup For more information, see Changed options in Data ONTAP 8.1 release family on page 71. Requirement for running Data ONTAP New requirements include the following: N3150 is the new platform listed in Supported systems on page 83 For more information, see Requirements for running Data ONTAP Mode on page IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

17 New cautions in Data ONTAP New cautions include the following: Upgrade and reert cautions on page 88 iscsi target adapters not supported in Data ONTAP 8.1 and later on page 90 If you reert to a release earlier than Data ONTAP 8.1 you might need to install licenses for some products N6210 and N6040 storage systems with Flash Cache modules are supported Downgrade to 8.1 not allowed for N6210 and N6040 systems with Flash Cache modules MultiStore license and Filer units remoed when reerting to Data ONTAP 8.0.x Setup cautions on page 97 CIFS setup oerwrites the storage system password on page 97 Setup cautions on page 97 CIFS setup oerwrites the storage system password on page 97 File access and protocols cautions CIFS startup might take seeral minutes after HA failoer and gieback on page 101 For more information about all important cautions in the Data ONTAP 8.1 release family, see Important cautions. Cautions remoed in Data ONTAP The following cautions hae been remoed in this release: Non-ASCII characters in the comment string of the lun setup command result in system panic Mirroring a ZCS aggregate is not supported for this release of Data ONTAP N6210 and N6040 systems with Flash Cache modules are not supported Oplock breaks might cause panic when using durable handles Storage Encryption preconfiguration requirements Write operations might fail or LUNs might go offline if deduplication metadata increases moed to the Limitations section Storage system panic due to nonresponsie key management serer Retrieing authentication keys might cause storage system panic New known problems and limitations in Data ONTAP New known issues include the following: Manageability issues on page 106 Cached data in a Flash Cache module is cleared during upgrade to Data ONTAP 8.1 release family on page 106 Storage resource management issues You cannot assign ownership and checksum type for spare disks or array LUNs in the same operation Configuring ACP to use a different port on N3220 and N3240 storage systems disables ACP for the local SAS expander Changes introduced since Data ONTAP

18 Network protocol issues Partner node might be unaailable during controller failoer when an interface name is used as a host name alias in the /etc/hosts file on page 114 Static routes are not retargeted to a network interface with a new autoconfigured IP6 address File access protocol issues Microsoft Windows 7 clients fail to rename files and directories on page 118 CIFS client authentication fails if host name exceeds 16 characters on page 117 For more information about all the limitations in the Data ONTAP 8.1 release family for 7-Mode, see Known problems and limitations. Limitations remoed in Data ONTAP The following limitations hae been remoed in this release: CIFS access to SnapVault or qtree SnapMirror destination can cause system panic Issues with exportfs commands in noninteractie SSH sessions SSD spare blocks consumed limit reported as N/A Entering dummy network addresses during ACP setup can cause a system panic CIFS shares with comment ending with backslash disappear Error NFS4_BADOWNER when NFS4 client passes UID as string CIFS clients must reopen files after you break locks File screening requests fail due to FPolicy serer connection timeout Large number of locks might cause temporary performance degradation User mapping fails for users in a trusted domain Reboot required after updating the krb5.conf file Specification of the default keytab file Aggregate snapshot copy creation and aggr copy commands fail with an aggregate Snapshot resere of 0 percent Exceeding the maximum number of assigned deices results in a panic Documentation changes for Data ONTAP The following information is new in this release: Changes to the System Administration Guide on page 127 Changes to the Commands Manual Page Reference on page 131 Changes to the SAN Administration Guide on page 136 Changes to the Software Setup Guide on page 137 Changes to the SAN Configuration Guide for 7-Mode on page 138 For more information about other important documentation changes, see Changes to published documentation. 12 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

19 Unsupported features This Data ONTAP release does not support some Data ONTAP features. Features not aailable or discontinued in Data ONTAP 8.1 and later releases operating in 7-Mode FilerView FilerView is no longer aailable on systems running Data ONTAP 8.1 or later releases. You can use OnCommand System Manager as a web-based graphical management interface to manage common storage system functions from a web browser. For more information about OnCommand System Manager, see the IBM N series support website, which is accessed and naigated as described in Websites on page 2. Support for EXN2000 is discontinued. For additional information, see Systems including EXN2000 storage expansion units with ESH2 modules on page 17. UPS management is not supported. For additional information, see UPS management is no longer supported on page Gb FC target ports are not supported. For additional information, see 2-Gb FC ports not supported as targets on page 103. If you require these features in your business enironment, contact your IBM N series support to ealuate the best upgrade path. Features not aailable in Data ONTAP 8.0 and later releases operating in 7-Mode Netboot Netboot is not a supported function unless you are restoring the Data ONTAP image on the boot deice, such as a PC CompactFlash card. For information about how to replace a PC CompactFlash card or restore the Data ONTAP image on the card, see the Replacing a CompactFlash Card flyer that is applicable to your ersion of Data ONTAP. SnapValidator for Oracle SnapValidator for Oracle is not supported in Data ONTAP Mode and later 7-Mode releases. For more information, contact technical support. IPsec IPsec is not supported. If IPsec is enabled on your storage system, be aware that it will be automatically disabled during the upgrade. TOE TOE functionality is not supported. There is no aderse effect on the performance of your storage system because TOE is disabled. If you require these features in your business enironment, contact your IBM N series support to ealuate the best upgrade path. Copyright IBM Corp

20 14 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

21 New and changed features in the Data ONTAP 8.1 release family A number of features and enhancements hae been added or changed in the Data ONTAP 8.1 release family. Features that were present in the Data ONTAP 7.x release family are now supported in this release. Note: Some new and changed features in this release might also be introduced in a maintenance release of an earlier Data ONTAP release family. Before upgrading, be sure to consult with your IBM representatie about new Data ONTAP functionality to determine the best solution for your business needs. Additional major changes made in Data ONTAP 8.1 are described as follows: New and changed platform and hardware support on page 16 Manageability enhancements on page 19 Storage resource management enhancements on page 26 High-aailability pair (formerly actie/actie configuration) enhancements on page 28 Networking and security protocol enhancements on page 29 File access protocol enhancements on page 32 Data protection enhancements on page 37 Storage efficiency enhancements on page 39 MultiStore enhancements on page 40 Copyright IBM Corp

22 New and changed platform and hardware support This Data ONTAP release supports new and changed hardware. For information about supported systems, see Supported systems on page 83. Support for Flash Cache 2 modules Support for 800-GB SSDs Support for SAS optical cables Support for 1.2-TB performance disks Support for N6220 Support for N6250 on page 17 Support for 200-GB SSDs on page 17 Support for 4-TB NL-SAS disks on page 17 Support for the 10-GbE mezzanine card with N3150 on page 17 Support for the N3150, N3220, and N3240 platforms on page 17 Support for systems with only SSDs on page 17 Support for 900-GB performance disks on page 17 Support for IOM6 (FC2099) for the EXN3000 storage expansion unit on page 17 Support for the EXN3200 storage expansion unit on page 17 Support for SAS tape dries on page 17 Systems including EXN2000 storage expansion units with ESH2 modules on page 17 Support for FC/SAS bridge (ATTO for IBM FibreBridge 6500N) on page 18 Support for Flash Cache 2 modules Data ONTAP and later 8.1.x releases support the 2-TB, 1-TB, and 512-GB, PCIe-attached Flash Cache 2 modules that use Flash technology. Support for 800-GB SSDs In Data ONTAP and later releases, 800-GB SSDs are supported for SSD-only aggregates GB SSDs are supported for Flash Pool aggregates in Data ONTAP and later releases. For information about which platforms and expansion units support these dries and aggregate types, see the IBM N series Introduction and Planning Guide. Support for SAS optical cables Data ONTAP and later 8.1.x releases support SAS optical cables on N6200 series and N7x50T series storage systems with SAS disk sheles using IOM6. Support for 1.2-TB performance disks In Data ONTAP and later releases, 1.2-TB disks are supported for SAS storage expansion units. These are performance disks (rather than capacity disks) and their speed is 10K RPM. Support for N6220 Data ONTAP and later releases support the N6220 platform. 16 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

23 Support for N6250 Data ONTAP and later releases support the N6250 platform. Support for 200-GB SSDs In Data ONTAP and later releases, 200-GB SSDs are supported for the EXN3000 and EXN3500 storage expansion units. Support for 4-TB NL-SAS disks In Data ONTAP and later releases, 4-TB NL-SAS disks are supported for the EXN3000 SAS storage expansion units. These are capacity disks (rather than performance disks), with a rotational speed of 7.2K RPM. Their Data ONTAP disk type is FSAS. Support for the 10-GbE mezzanine card with N3150 Data ONTAP and later supports the 10-GbE mezzanine card with N3150 storage systems. Support for the N3150, N3220, and N3240 platforms Data ONTAP and later releases support N3150, N3220, and N3240 storage systems. Support for systems with only SSDs Data ONTAP and later releases support SSD-only configurations for most storage system models. For these models, the presence of HDDs is not required. To see which models support SSD-only configurations, see the IBM System Storage N series Introduction and Planning Guide. Support for 900-GB performance disks In Data ONTAP and later releases, 900-GB disks are supported for EXN3500 SAS-connected expansion units. These are performance disks (rather than capacity disks) and their speed is 10K. Support for IOM6 (FC2099) for the EXN3000 storage expansion unit Data ONTAP and later releases support the EXN3000 storage expansion units with IOM3 and IOM6. Support for the EXN3200 storage expansion unit Data ONTAP and later releases support the EXN3200 storage expansion unit. Support for SAS tape dries Starting with Data ONTAP 8.1, SAS tape dries are supported. Systems including EXN2000 storage expansion units with ESH2 modules Beginning with Data ONTAP 8.1, IBM N series EXN2000 Storage Expansion Unit with ESH2 storage I/O modules are no longer supported. If een one of these deices is attached to your storage system, do not upgrade to Data ONTAP 8.1 or later until after you replace the deices. New and changed features in the Data ONTAP 8.1 release family 17

24 Upgrading a system with these deices attached to it results in an unsupported system configuration and shelf configuration errors. If you want to upgrade to Data ONTAP 8.1 or a later release and your storage enironment includes the obsolete EXN2000 units with ESH2 deices, you should contact your IBM representatie to discuss upgrading to IBM N series EXN3000 Storage Expansion Unit or IBM N series EXN3500 Storage Expansion Unit. Support for FC/SAS bridge (ATTO for IBM FibreBridge 6500N) Starting with Data ONTAP 8.1, the FC/SAS bridge (ATTO for IBM FibreBridge 6500N Feature Code 2100), which is a Fibre Channel-to-SAS bridge that allows SAS disk sheles (with SAS or SATA disk dries) to be used in stretch and fabric MetroCluster configurations, is supported. 18 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

25 Manageability enhancements You can find information about the new and changed manageability capabilities. Options for specifying uppercase and lowercase requirements in user passwords Role-based access control for LDAP users' system access Support of core segments on page 20 SP SSH access control and automatic timeout on page 20 RLM SSH access control and automatic timeout on page 20 SSH port forwarding for the SP is disabled by default on page 21 SSH port forwarding for the RLM is disabled by default on page 21 Changes in aggregate Snapshot copy management on page 21 SSH serer ersion for Data ONTAP on page 21 Free space reallocation of aggregates on page 21 Cache rewarming for Flash Cache modules on page 22 Enhancements to reallocation scans, read reallocation, and extents on page 22 System health monitoring on page 23 AutoSupport enhancements on page 23 Default 64-bit root aggregate for new systems on page 24 UPS management is no longer supported on page 24 Changes to default aggregate Snapshot resere for newly created nonmirrored aggregates on page 25 IP6 support for SP and RLM on page 25 Support for Transport Layer Security protocol on page 25 Licensing changes on page 25 Options for specifying uppercase and lowercase requirements in user passwords Starting with Data ONTAP 8.1.2, you can specify the minimum number of uppercase or lowercase alphabetic characters that a password must contain. You can use the following options to specify the requirements of uppercase or lowercase alphabetic characters in user passwords: The security.passwd.rules.minimum.uppercase option specifies the minimum number of uppercase alphabetic characters that a password must contain. The default is 0, which does not require that a password contain uppercase characters. The security.passwd.rules.minimum.lowercase option specifies the minimum number of lowercase alphabetic characters that a password must contain. The default is 0, which does not require that a password contain lowercase characters. Role-based access control for LDAP users' system access Starting with Data ONTAP 8.1.1, the security.admin.nsswitchgroup option enables you to map LDAP groups to specified roles on the system and manage LDAP users access to the system. New and changed features in the Data ONTAP 8.1 release family 19

26 Mapping an LDAP group to a role enables users in that group to hae only the capabilities granted by the mapped role. The role can be a predefined role or one that you create by using the useradmin role add command. If you do not specify a role for an LDAP group, users in that group are granted capabilities of the admin role and hae full administratie access to the storage system. For more information about mapping an LDAP group to a role on the storage system, see the Data ONTAP System Administration Guide for 7-Mode. For information about the security.admin.nsswitchgroup option, see the na_options(1) man page. Support of core segments A core dump file can be ery large, making it time consuming to upload to technical support when you need to. Starting with Data ONTAP 8.1.1, you can segment a saed core dump file into core segments for easier handling. You use the coredump segment config commands to configure the automatic segmenting of core dump files. You use the coredump segment commands to manage core segments. For more information about segmenting core dump files, see the Data ONTAP System Administration Guide for 7-Mode. SP SSH access control and automatic timeout Starting with Data ONTAP 8.1.1, you can configure the SP to accept SSH requests from only the administration hosts that you specify. You can also configure the automatic logout settings so that an SSH connection to the SP is automatically terminated after the connection has been idle for the number of minutes you specify. These enhancements are supported on N6200 series and N7x50T series systems that are running SP firmware 1.3 or later and N3220 and N3240 systems that are running SP firmware 2.1 or later. For information about configuring SP SSH access control and automatic logout, see the Data ONTAP System Administration Guide for 7-Mode. RLM SSH access control and automatic timeout Starting with Data ONTAP 8.1.1, you can configure the RLM to accept SSH requests from only the administration hosts that you specify. You can also configure the automatic logout settings so that an SSH connection to the RLM is automatically terminated after the connection has been idle for the number of minutes you specify. These enhancements are supported on systems that are running RLM firmware 4.1 or later. For information about configuring RLM SSH access control and automatic logout, see the Data ONTAP System Administration Guide for 7-Mode. 20 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

27 SSH port forwarding for the SP is disabled by default On N6200 series and N7x50T series systems that are running SP firmware 1.3 or later and N3220 and N3240 systems that are running SP firmware 2.1 or later, SSH port forwarding for the SP is disabled by default. SSH port forwarding for the RLM is disabled by default On systems that are running RLM firmware 4.1 or later, SSH port forwarding for the RLM is disabled by default. Changes in aggregate Snapshot copy management Starting with Data ONTAP 8.1.1, how you manage aggregate Snapshot copy creation and the aggregate Snapshot resere has changed. For aggregate Snapshot copy creation and the aggr copy commands to succeed, you no longer need to increase the aggregate Snapshot resere to a non-zero percentage. In addition, if you want to create aggregate Snapshot copies but the aggregate has an aggregate Snapshot resere of 0 percent and automatic aggregate Snapshot copy deletion is enabled, the operation to create aggregate Snapshot copies still succeeds if both of the following conditions are met: The aggregate has at least 10 percent of free space. For Snapshot copy creation, the space that is resered in the aggregate to honor a FlexVol olume's guarantee is considered free space in the aggregate. The aggregate Snapshot copies do not exceed the current aggregate Snapshot resere by more than 5 percent of the size of the aggregate. SSH serer ersion for Data ONTAP The SSH serer ersion running on Data ONTAP is Data ONTAP SSH ersion 1.0. For information about the Common Vulnerabilities and Exposures (CVE) fixes implemented in Data ONTAP, see the IBM Systems Storage N series Suspected Security Vulnerabilities tech note at the following link: Free space reallocation of aggregates Starting in Data ONTAP 8.1.1, you can enable free space reallocation on aggregates to improe write performance. Free space reallocation improes write performance by optimizing the free space within an aggregate. Free space reallocation works best on workloads that perform a mixture of small random oerwrites and sequential or random reads. You can expect additional CPU utilization when you enable free space reallocation. You should not enable free space reallocation if your storage system has sustained, high CPU utilization. You use the aggr options command with the free_space_realloc option to enable free space reallocation. New and changed features in the Data ONTAP 8.1 release family 21

28 For more information about free space reallocation, see the Data ONTAP System Administration Guide for 7-Mode. Cache rewarming for Flash Cache modules Starting in Data ONTAP 8.1, the WAFL external cache preseres the cache in a Flash Cache module during a graceful shutdown. When a storage system powers down, the WAFL external cache takes a snapshot of the data in a Flash Cache module. When the system powers up, it uses the snapshot to rebuild the cache. After the process completes, the system can read data from the cache. This process, called cache rewarming, helps to maintain system performance after a planned shutdown. For example, you might shut down a system to add hardware or upgrade software. Cache rewarming is enabled by default if you hae a Flash Cache module installed. Cache rewarming is aailable when both nodes in an HA pair are running Data ONTAP 8.1. For more information about cache rewarming, see the Data ONTAP System Administration Guide for 7-Mode. Enhancements to reallocation scans, read reallocation, and extents Starting in Data ONTAP 8.1, you can use reallocation scans, read reallocation, and extents to optimize the layout of specific types of olumes. Optimizing the layout of olumes can improe the read performance of host applications that access data on the storage system. For more information about reallocation scans, read reallocation, and extents, see the Data ONTAP System Administration Guide for 7-Mode. Reallocation scans, read reallocation, and extents with FlexVol olumes contained in mirrored aggregates In prior releases, you could enable reallocation scans, read reallocation, and extents on FlexVol olumes contained in mirrored aggregates. Howeer, some command options were not supported with this type of olume. Starting in Data ONTAP 8.1.1, you can use the following command options to optimize the layout of FlexVol olumes that are contained in mirrored aggregates: Reallocation scans You can use the -p option when you run the reallocate start command. The -p option (also called physical reallocation) reallocates user data on the physical blocks in the aggregate while presering the logical block locations within a FlexVol olume. Read reallocation You can set the read_realloc option to space_optimized when you run the ol options command. space_optimized conseres space but results in degraded Snapshot read performance. Extents You can set the extent option to space_optimized when you run the ol 22 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

29 options command. space_optimized conseres space but results in degraded Snapshot read performance. Reallocation scans, read reallocation, and extents with deduplicated olumes Starting in Data ONTAP 8.1, reallocation scans, read reallocation, and extents can optimize the layout of a deduplicated olume. You use the following command options to optimize the layout of a deduplicated olume: Reallocation scans Use the -p option when you run the reallocate start command. Reallocation scans skip deduplicated data if you do not specify the -p option. Read reallocation Set the read_realloc option to space_optimized when you run the ol options command. Read reallocation skips deduplicated data if you set the read_realloc option to on. Extents Set the extent option to space_optimized when you run the ol options command. Extents skip deduplicated data if you set the extent option to on. System health monitoring You can proactiely manage your system by monitoring a single, integrated health status. If the status is degraded, you can iew details about the problem, including the probable cause and recommended recoery actions. After you resole the problem, the system health status automatically returns to OK. The system health status reflects multiple separate health monitors. A degraded status in an indiidual health monitor causes a degraded status for the oerall system health. Currently, there are two health monitors: an oerall System Health Monitor and a Node Connectiity health monitor for the Storage subsystem. For information about monitoring your system's health, see the Data ONTAP System Administration Guide for 7-Mode and the man pages for the system health commands. AutoSupport enhancements Starting in Data ONTAP 8.1, AutoSupport messages contain more targeted data, are easier to manage, and offer better protocol and priacy support. The content of AutoSupport messages is more focused and compact because of the following changes: The data sent in eent-triggered AutoSupport messages is now specific to the triggering eent. Many log files that are sent in AutoSupport messages now contain only new lines added since the last AutoSupport message. New and changed features in the Data ONTAP 8.1 release family 23