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 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 SAS disks Support for IOM6 (FC2099) for the EXN3000 storage expansion unit Support for the EXN3200 storage expansion unit Support for SAS tape drives 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-availability pair (formerly active/active 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 Copyright IBM Corp iii

4 Supported tape drives Support for 3-TB SATA disks Support for 2-TB SATA disks Changes in storage expansion unit support Support for EXN3500 storage expansion units Support for EXN3000 storage expansion units Manageability enhancements Reversion and downgrade support 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 versions Root aggregate Snapshot reserve values reduced Storage resource management enhancements Support for 64-bit aggregates Data compression support File space utilization report Upgrading to Data ONTAP increases volume capacity after deduplication Maximum simultaneous FlexClone file or FlexClone LUN operations per storage system Support for FlexClone files and FlexClone LUNs on vfiler units Increased maximum RAID group size for SATA disks Ability to decrease maxfiles High-availability 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 receiving 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 server 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 volume SnapMirror destination backups Support for 840 disk drives on fabric-attached MetroCluster configuration Support for out-of-order frame delivery for SnapMirror over Fibre Channel Support for SnapMirror relationship between two FlexClone volumes Support for SnapMirror network compression Support for designated range of ports for NDMP data connections If volumes with deduplication exceed the maximum supported size NearStore license is not required for deduplication Maximum concurrent deduplication operations supported iv IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

5 Prerequisite for backing up data to tape using NDMP services Snapshot copy schedules SnapMirror support for 64-bit volumes SnapVault support for 64-bit volumes 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 removed 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 removed commands in the Data ONTAP Mode release family 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 revert 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 Contents v

6 Notices vi 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 Availability (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 reverting from this release to an earlier release, see the Data ONTAP Upgrade and Revert/Downgrade Guide for 7-Mode. Note: If you have 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-leveling and cache storage. However, to deliver on the full value 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 116. 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 17. 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 53. Some Data ONTAP features are not supported in this release. For more information, see Unsupported features on page 15. 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 Copyright IBM Corp

8 appliances and gateway systems, except where otherwise indicated. It is a best practice for all Data ONTAP users to see the following sections: v If Data ONTAP is already running on storage systems in your environment, you should familiarize yourself with relevant topics before upgrading to Data ONTAP This information helps you identify and resolve issues that might affect the availability of your systems. Check the online version of the Release Notes periodically for new cautions or updates that might have been posted since you downloaded your software. v Changes to published documentation on page 155 in these Release Notes. This release information became available after the set of guides provided with this release were published. Websites IBM maintains pages on the World Wide Web where you can get the latest technical information and download device drivers and updates. The following web pages provide N series information: v A listing of currently available N series products and features can be found at the following web page: v 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 navigated, and to access the N series support website, refer to the following publicly accessible web page: This web page also provides links to AutoSupport information as well as other important N series product resources. v IBM System Storage N series products attach to a variety of servers and operating systems. To determine the latest supported attachments, go to the IBM N series interoperability matrix at the following web page: v For the latest N series hardware product documentation, including planning, installation and setup, and hardware monitoring, service 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 17. 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: v Support for Flash Cache 2 Modules v Support for 800-GB SSDs v Support for SAS optical cables on page 19 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: v File access protocol enhancements v Enhancements for management of unresponsive LDAP servers v Data protection enhancements v Restoring NFSv4 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. Removed commands in Data ONTAP No commands are removed in this release. For information about other commands, see Changed commands in Data ONTAP 8.1 release family operating in 7-Mode. Copyright IBM Corp

10 New options in Data ONTAP The following new options are added to this release: v ldap.fast_timeout.enable v ldap.retry_delay For more information, see New options in the Data ONTAP 8.1 release family operating in 7-Mode. New known problems and limitations in Data ONTAP The following is the new known issue in this release: v Data protection issues v Volume migration by using the snapmirror migrate command leads to stale LUN maps v Windows Security tab unavailable for shares with long UNC paths on page 141 v Effective style of qtrees created on an NTFS volume before configuring CIFS on page 145 v Out of space errors could be returned when fractional reserve is set to zero on page 135 v RAID disk timeout option not updated correctly after upgrade on page 113 v Some Hitachi or HP XP array LUNs might not be visible on page 153 For more information about all the limitations in the Data ONTAP 8.1 release family for 7-Mode, see Known problems and limitations. Limitations removed in Data ONTAP The following limitation has been removed in this release: v Value of the option nfs.ifc.rcv.high is unexpectedly reset Documentation changes for Data ONTAP Data ONTAP includes the following new information: v Changes to the High Availability Configuration Guide on page 159 Information about SAS optical cable support for MetroCluster configuration v Changes to the Data ONTAP Storage Management Guide for 7-Mode on page 160 Usable and physical disk capacity by disk size 4 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

11 v Changes to the File Access and Protocols Management Guide on page 164 Managing anonymous FTP access requires additional step v Changes to the Gateway Implementation Guide for Third-Party Storage on page 168 Workaround when LUNs are not visible 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: v Support for N6220 on page 19 v Support for N6250 on page 19 v Support for 200-GB SSDs on page 19 v Support for 4-TB NL-SAS disks on page 19 v Support for the 10-GbE mezzanine card with N3150 on page 19 New and changed features in Data ONTAP New and changed features include the following: v Manageability enhancements on page 21 Options for specifying uppercase and lowercase requirements in user passwords on page 21 v High-availability pair (formerly active/active configuration) enhancements on page 33 Automatic giveback after takeover due to panic on page 33 v File access protocol enhancements on page 38 Support for the Manage Auditing and Security Logs GPO on page 39 Support for the Windows Owner Rights security principal on page 39 Enabling new EMS messages to help troubleshoot Kerberos issues on page 40 v Gateway enhancements on page 50 Support for EMC VNX storage arrays on page 50 Support for storage array advanced features on page 50 Changes introduced since Data ONTAP 8.1 5

12 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 17. New commands in Data ONTAP The following new commands are added to this release: v bmc battery-info v nfs vstorage stats For more information, see Changed commands in the Data ONTAP 8.1 release family on page 78 Changed commands in Data ONTAP The following commands changed in this release: v halt v setup New options in Data ONTAP The following new options are added to this release: v cf.giveback.auto.after.panic.takeover v nfs.rpcsec.trace v security.passwd.rules.minimum.lowercase v security.passwd.rules.minimum.uppercase For more information, see New options in the Data ONTAP 8.1 release family on page 84 Changed options in Data ONTAP The following options changed in this release: v cf.giveback.auto.attempts.minutes v cf.giveback.auto.attempts.count v cf.giveback.auto.delay.seconds v nfs.authsys.extended_groups_ns.queue_max v nfs.v4.id.allow_numerics New cautions in Data ONTAP The following new cautions are added in this release: v Upgrade and revert cautions on page IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

13 Upgrade from 7.3.x to 8.1.x through intermediate upgrade with deduplication disabled can cause a system panic on page 115 Revert from Data ONTAP 8.1.x to Data ONTAP 8.0.x fails if fingerprint database size exceeds 256 GB on page 120 Downgrading to Data ONTAP 8.1 or earlier with a Flash Pool aggregate root aggregate disables the system on page 121 v Storage management cautions on page 123 Disk failures might increase for some disk models after upgrading to this version of Data ONTAP on page 124 For more information about all the important cautions in the Data ONTAP 8.1 release family, see Important cautions. Cautions removed in Data ONTAP The following cautions have been removed in this release: v Automatic background disk firmware updates not enabled for non-mirrored RAID4 aggregates v System panics when Flash Cache is full and the root volume is a traditional volume v Preventing service disruption when expanding an aggregate with volumes using quotas v Changing the language of a FlexVol volume when expansion scanner is running could result in system disruption v Some 32-bit operations cannot be performed on a Flash Pool v Requirements for converting an aggregate to a Flash Pool v CIFS setup via ONTAPI may lead to removal of already existing user created cifs shares v CIFS SID and Credential leak impacts cache memory availability v Storage system might panic when not specifying an export path Limitations removed in Data ONTAP The following limitations have been removed in this release: v Files might not be able to be deleted using NFS in a full FlexVol volume v Disks might be silently left unassigned for multi-disk carrier shelves v CIFS users cannot rename or delete home directories v Storage system requests to Windows Server 2008 might fail v ADIC Quantum tape libraries are not discovered by Data ONTAP v Tape devices behind Decru DataFort are not detected unless a known SCSI device is mapped to LUN 0 Changes introduced since Data ONTAP 8.1 7

14 v Possible giveback failure during controller or NVRAM8 replacement on N7x50T series or N6200 series systems v savecore command not working Documentation changes for Data ONTAP The following information is new in this release: v Changes to the System Administration Guide on page 155 v Changes to the High Availability Configuration Guide on page 159 v Changes to the File Access and Protocols Management Guide on page 164 v Changes to the Software Setup Guide on page 167 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: v Support for the N3150, N3220, and N3240 platforms on page 19 v Support for systems with only SSDs on page 19 v Support for 900-GB SAS disks on page 19 v Support for IOM6 (FC2099) for the EXN3000 storage expansion unit on page 20 v Support for the EXN3200 storage expansion unit on page 20 For more information, see New and changed platform and hardware support on page 18 New and changed features in Data ONTAP New and changed features include the following: v 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 23 8 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

15 SSH port forwarding for the RLM is disabled by default Changes in aggregate Snapshot copy management Free space reallocation of aggregates SSH server version for Data ONTAP v Storage resource management enhancements Support for Flash pool aggregates on page 30 Support for the Advanced Zone Checksum type (AZCS) on page 30 Support for sanitizing SSDs v High-availability pair (formerly active/active configuration) enhancements on page 33 MetroCluster support for Cisco switches v 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 vstorage over NFS v Data protection enhancements SnapVault support for nondefault vfiler units on page 44 Support for incremental and differential backups using SMTape engine Support for restore to volumes in 64-bit aggregates using SMTape engine v MultiStore enhancements on page 48 Online migration support for vfiler units on page 48 v 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 17. New commands in Data ONTAP The following new commands were added to this release: v cifs branchcache hash stat v cifs branchcache set key v coredump segment config modify v coredump segment config show v coredump segment delete v coredump segment delete-all Changes introduced since Data ONTAP 8.1 9

16 v coredump segment show v coredump segment start v coredump segment status v coredump segment stop v storage shelf identify Changed commands in Data ONTAP The following commands are changed in this release: v aggr options v aggr status v cifs shares v df v lock status v qtree oplock v storage show disk v sysconfig v vol status For more information, see Changed commands in the Data ONTAP 8.1 release family on page 78. New options in Data ONTAP New options include the following: v cifs.smb2_1.branch_cache.enable v cifs.smb2_1.branch_cache.hash_time_out v cifs.w2k_password_change v cifs.w2k_password_change_interval v cifs.w2k_password_change_within v nfs.mount_rootonly v nfs.v2.enable v nfs.v4.id.allow_numerics v nfs.vstorage.enable v rlm.autologout.enable v rlm.autologout.timeout v rlm.ssh.access v snapmirror.vsm.volread.smtape_enable v sp.autologout.enable 10 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

17 v sp.autologout.timeout v sp.ssh.access For more information, see New options in the Data ONTAP 8.1 release family on page 84. Changed options in Data ONTAP The following options changed in this release: v cifs.oplocks.enable v cifs.smb2.client.enable v cifs.smb2.durable_handle.enable v cifs.smb2.durable_handle.timeout v cifs.smb2.enable v cifs.smb2.signing.required v cifs.weekly_w2k_password_change v security.admin.nsswitchgroup For more information, see Changed options in Data ONTAP 8.1 release family on page 90. Requirement for running Data ONTAP New requirements include the following: v N3150 is the new platform listed in Supported systems on page 105 For more information, see Requirements for running Data ONTAP Mode on page 105. New cautions in Data ONTAP New cautions include the following: v Upgrade and revert cautions on page 110 iscsi target adapters not supported in Data ONTAP 8.1 and later on page 112 If you revert 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 Changes introduced since Data ONTAP

18 MultiStore license and vfiler units removed when reverting to Data ONTAP 8.0.x v Setup cautions on page 121 CIFS setup overwrites the storage system password on page 121 v Setup cautions on page 121 CIFS setup overwrites the storage system password on page 121 v File access and protocols cautions CIFS startup might take several minutes after HA failover and giveback on page 126 For more information about all important cautions in the Data ONTAP 8.1 release family, see Important cautions. Cautions removed in Data ONTAP The following cautions have been removed in this release: v Non-ASCII characters in the comment string of the lun setup command result in system panic v Mirroring a ZCS aggregate is not supported for this release of Data ONTAP v N6210 and N6040 systems with Flash Cache modules are not supported v Oplock breaks might cause panic when using durable handles v Storage Encryption preconfiguration requirements v Write operations might fail or LUNs might go offline if deduplication metadata increases moved to the Limitations section v Storage system panic due to nonresponsive key management server v Retrieving authentication keys might cause storage system panic New known problems and limitations in Data ONTAP New known issues include the following: v Manageability issues on page 130 Cached data in a Flash Cache module is cleared during upgrade to Data ONTAP 8.1 release family on page 131 v 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 v Network protocol issues 12 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

19 Partner node might be unavailable during controller failover when an interface name is used as a host name alias in the /etc/hosts file on page 138 Static routes are not retargeted to a network interface with a new autoconfigured IPv6 address v File access protocol issues Microsoft Windows 7 clients fail to rename files and directories on page 142 File copy operation on a widelink path inside a CIFS share might fail when using SMB 2.x on page 143 CIFS client authentication fails if host name exceeds 16 characters on page 142 Domain Controller responds with an access denied error to SMB2 tree connect request For more information about all the limitations in the Data ONTAP 8.1 release family for 7-Mode, see Known problems and limitations. Limitations removed in Data ONTAP The following limitations have been removed in this release: v CIFS access to SnapVault or qtree SnapMirror destination can cause system panic v Issues with exportfs commands in noninteractive SSH sessions v SSD spare blocks consumed limit reported as N/A v Entering dummy network addresses during ACP setup can cause a system panic v CIFS shares with comment ending with backslash disappear v Error NFS4_BADOWNER when NFSv4 client passes UID as string v CIFS clients must reopen files after you break locks v File screening requests fail due to FPolicy server connection timeout v Large number of locks might cause temporary performance degradation v User mapping fails for users in a trusted domain v Reboot required after updating the krb5.conf file v Specification of the default keytab file v Aggregate snapshot copy creation and aggr copy commands fail with an aggregate Snapshot reserve of 0 percent v Exceeding the maximum number of assigned devices results in a panic Documentation changes for Data ONTAP Changes introduced since Data ONTAP

20 The following information is new in this release: v Changes to the System Administration Guide on page 155 v Changes to the Commands Manual Page Reference on page 159 v Changes to the SAN Administration Guide on page 165 v Changes to the Software Setup Guide on page 167 v Changes to the SAN Configuration Guide for 7-Mode on page 168 For more information about other important documentation changes, see Changes to published documentation. 14 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

21 Unsupported features This Data ONTAP release does not support some Data ONTAP features. Features not available or discontinued in Data ONTAP 8.1 and later releases operating in 7-Mode v FilerView FilerView is no longer available 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 navigated as described in Websites on page 2. v Support for EXN2000 is discontinued. For additional information, see Systems including EXN2000 storage expansion units with ESH2 modules on page 20. v UPS management is not supported. For additional information, see UPS management is no longer supported on page 28. v 2-Gb FC target ports are not supported. For additional information, see 2-Gb FC ports not supported as targets on page 128. If you require these features in your business environment, contact your IBM N series support to evaluate the best upgrade path. Features not available in Data ONTAP 8.0 and later releases operating in 7-Mode v Netboot Netboot is not a supported function unless you are restoring the Data ONTAP image on the boot device, 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 version of Data ONTAP. v SnapValidator for Oracle SnapValidator for Oracle is not supported in Data ONTAP Mode and later 7-Mode releases. For more information, contact technical support. v IPsec IPsec is not supported. If IPsec is enabled on your storage system, be aware that it will be automatically disabled during the upgrade. Copyright IBM Corp

22 v TOE TOE functionality is not supported. There is no adverse effect on the performance of your storage system because TOE is disabled. If you require these features in your business environment, contact your IBM N series support to evaluate the best upgrade path. 16 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

23 New and changed features in the Data ONTAP 8.1 release family A number of features and enhancements have 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 representative 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: v New and changed platform and hardware support on page 18 v Manageability enhancements on page 21 v Storage resource management enhancements on page 30 v High-availability pair (formerly active/active configuration) enhancements on page 33 v Networking and security protocol enhancements on page 35 v File access protocol enhancements on page 38 v Data protection enhancements on page 44 v Storage efficiency enhancements on page 46 v MultiStore enhancements on page 48 Copyright IBM Corp

24 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 105. v Support for Flash Cache 2 modules v Support for 800-GB SSDs v Support for SAS optical cables on page 19 v Support for 1.2-TB performance disks on page 19 v Support for N6220 on page 19 v Support for N6250 on page 19 v Support for 200-GB SSDs on page 19 v Support for 4-TB NL-SAS disks on page 19 v Support for the 10-GbE mezzanine card with N3150 on page 19 v Support for the N3150, N3220, and N3240 platforms on page 19 v Support for systems with only SSDs on page 19 v Support for 900-GB SAS disks on page 19 v Support for IOM6 (FC2099) for the EXN3000 storage expansion unit on page 20 v Support for the EXN3200 storage expansion unit on page 20 v Support for SAS tape drives on page 20 v Systems including EXN2000 storage expansion units with ESH2 modules on page 20 v Support for FC/SAS bridge (ATTO for IBM FibreBridge 6500N) on page 20 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 drives and aggregate types, see the IBM N series Introduction and Planning Guide. 18 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

25 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 shelves 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. 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 SAS disks In Data ONTAP and later releases, 900-GB disks are supported for EXN3500 SAS expansion units. These are performance disks (rather than capacity disks) and their speed is 10K. New and changed features in the Data ONTAP 8.1 release family 19

26 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 drives Starting with Data ONTAP 8.1, SAS tape drives 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 even one of these devices is attached to your storage system, do not upgrade to Data ONTAP 8.1 or later until after you replace the devices. Upgrading a system with these devices 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 environment includes the obsolete EXN2000 units with ESH2 devices, you should contact your IBM representative 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 shelves (with SAS or SATA disk drives) to be used in stretch and fabric MetroCluster configurations, is supported. 20 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

27 Manageability enhancements You can find information about the new and changed manageability capabilities. v Options for specifying uppercase and lowercase requirements in user passwords v Role-based access control for LDAP users' system access on page 22 v Support of core segments on page 22 v SP SSH access control and automatic timeout on page 22 v RLM SSH access control and automatic timeout on page 23 v SSH port forwarding for the SP is disabled by default on page 23 v SSH port forwarding for the RLM is disabled by default on page 23 v Changes in aggregate Snapshot copy management on page 23 v SSH server version for Data ONTAP on page 24 v Free space reallocation of aggregates on page 24 v Cache rewarming for Flash Cache modules on page 24 v Enhancements to reallocation scans, read reallocation, and extents on page 25 v System health monitoring on page 26 v AutoSupport enhancements on page 27 v Default 64-bit root aggregate for new systems on page 28 v UPS management is no longer supported on page 28 v Changes to default aggregate Snapshot reserve for newly created nonmirrored aggregates on page 28 v IPv6 support for SP and RLM on page 28 v Support for Transport Layer Security protocol on page 29 v Licensing changes on page 29 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: v The security.passwd.rules.minimum.uppercase option specifies the minimum number of uppercase alphabetic characters that a password must contain. v The default is 0, which does not require that a password contain uppercase characters. New and changed features in the Data ONTAP 8.1 release family 21

28 v The security.passwd.rules.minimum.lowercase option specifies the minimum number of lowercase alphabetic characters that a password must contain. v 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. Mapping an LDAP group to a role enables users in that group to have 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 have full administrative 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 very 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 saved 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. 22 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

29 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. 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 reserve has changed. For aggregate Snapshot copy creation and the aggr copy commands to succeed, you no longer need to increase the aggregate Snapshot reserve to a non-zero percentage. In addition, if you want to create aggregate Snapshot copies but the aggregate has an aggregate Snapshot reserve 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: v The aggregate has at least 10 percent of free space. New and changed features in the Data ONTAP 8.1 release family 23

30 For Snapshot copy creation, the space that is reserved in the aggregate to honor a FlexVol volume's guarantee is considered free space in the aggregate. v The aggregate Snapshot copies do not exceed the current aggregate Snapshot reserve by more than 5 percent of the size of the aggregate. SSH server version for Data ONTAP The SSH server version running on Data ONTAP is Data ONTAP SSH version 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 improve write performance. Free space reallocation improves write performance by optimizing the free space within an aggregate. Free space reallocation works best on workloads that perform a mixture of small random overwrites 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. 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 preserves 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, 24 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode

31 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 have a Flash Cache module installed. Cache rewarming is available 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 volumes. Optimizing the layout of volumes can improve 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 volumes contained in mirrored aggregates In prior releases, you could enable reallocation scans, read reallocation, and extents on FlexVol volumes contained in mirrored aggregates. However, some command options were not supported with this type of volume. Starting in Data ONTAP 8.1.1, you can use the following command options to optimize the layout of FlexVol volumes 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 preserving the logical block locations within a FlexVol volume. Read reallocation You can set the read_realloc option to space_optimized when you run the vol options command. space_optimized conserves space but results in degraded Snapshot read performance. Extents You can set the extent option to space_optimized when you run the New and changed features in the Data ONTAP 8.1 release family 25

32 vol options command. space_optimized conserves space but results in degraded Snapshot read performance. Reallocation scans, read reallocation, and extents with deduplicated volumes Starting in Data ONTAP 8.1, reallocation scans, read reallocation, and extents can optimize the layout of a deduplicated volume. You use the following command options to optimize the layout of a deduplicated volume: 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 vol 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 vol options command. Extents skip deduplicated data if you set the extent option to on. System health monitoring You can proactively manage your system by monitoring a single, integrated health status. If the status is degraded, you can view details about the problem, including the probable cause and recommended recovery actions. After you resolve the problem, the system health status automatically returns to OK. The system health status reflects multiple separate health monitors. A degraded status in an individual health monitor causes a degraded status for the overall system health. Currently, there are two health monitors: an overall System Health Monitor and a Node Connectivity 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. 26 IBM System Storage N series: Data ONTAP Release Notes for 7-Mode