SAP HANA Backup Guide (for A2040d SLES) 23 rd of January 2017 NEC SAP Global Competence Center

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1 SAP HANA Backup Guide (for A2040d SLES) 23 rd of January 2017 NEC SAP Global Competence Center

2 1. Introduction 1.1. Purpose This manual describes how to create an initial backup after finishing the installation of SAP HANA Scope SAP HANA single node appliance OS is SLES Reference documents SAP HANA Technical Operations Manual (TOM) SAP HANA Database Administration Guide The above documents are available from the following site, be sure to check 2. Planning 2.1. SAP HANA data allocation This chapter describes the disk and filesystem layout. Use the commands lsblk and blkid to get details about existing block devices and their usage. All data except swap, /var/crash and /backup in the following tables will be included with the backup Appliances with 3 internal HDDs (up to 1TB) JBOD ext3 /boot 1 GB sda2 2 x 300GB GB LD#1 279 GB (+ 1 spare) ext3 / 267 GB lv_root LD#1~ GB xfs /hana/data GB lv_data LD#13~ GB xfs /hana/log GB lv_log xfs /hana/shared GB lv_shared 24 x 600GB 1 12 x 558GB LD#25~3 xfs /backup 50 GB lv_backup GB 6 xfs /var/crash GB lv_dump (free) 434 GB 2.3. Appliances with 8 internal HDDs (up to 2TB) ext3 /boot 1 GB sda2 2 x 900GB 1 838GB LD#1 838 GB ext3 / 776 GB lv_root xfs /backup 50 GB lv_backup JBOD 6 x 900GB 24 x 600GB 5(5+P ) GB 12 x 558GB LD# GB xfs /hana/log GB lv_log LD# GB xfs /hana/shared GB lv_shared LD#4 1,118 GB xfs /var/crash GB lv_dump xfs /hana/data GB lv_data LD#1~1212 x 558GB (free) 552 GB 2 NEC Corporation 2017

2.4. Appliances with 8 internal HDDs (up to 4TB) ext3 /boot 1 GB sda2 2 x 1.2TB 1 1,117 GB LD#1 ext3 / 955 GB lv_root 1.117 GB xfs /backup 150 GB lv_backup 6 x 1.2TB JBOD 24 x 1.2TB LD#2 1.

3 2.4. Appliances with 8 internal HDDs (up to 4TB) ext3 /boot 1 GB sda2 2 x 1.2TB 1 1,117 GB LD#1 ext3 / 955 GB lv_root GB xfs /backup 150 GB lv_backup 6 x 1.2TB JBOD 24 x 1.2TB LD# GB xfs /hana/log GB lv_log 5(5+P) 5,585 GB LD# GB xfs /hana/shared GB lv_shared (free) 465 GB LD#1~12 12x1,024 GB xfs /hana/data GB lv_data 1 12x1,117GB LD#13~24 12x93 GB xfs /var/crash 1,116 GB lv_dump 2.5. Backup procedure overview The backup procedure exists of the following 3 phases: Boot up to the rescue mode. Backup each volume with the tar command. Reboot server and start SAP HANA. 3. Backup procedure In this chapter a procedure to obtain an initial backup of the environment is shown. This procedure should be run after the initial installation of SAP HANA has completed Boot to rescue mode Insert the SLES 12 Installation Media and boot from DVD. As soon as the system starts from the DVD the boot menu is displayed. Select the Rescue System option here: 3 NEC Corporation 2017

4 On the next screen select your keyboard layout. Then, after the boot has completed, you will see a login prompt: Login as the root user. Now you will be dropped into a shell Backup In this chapter you will create a backup of every partition. All commands are valid for all appliance sizes. 1 Create a temporary mount point for every device: mkdir /tmp/osmount mkdir /tmp/logmount mkdir /tmp/bootmount mkdir /tmp/bootefimount mkdir /tmp/datamount mkdir /tmp/sharedmount mkdir /tmp/backup 2 Mount all devices to relevant mount points in read-only mode: mount o ro /dev/sda1 /tmp/bootefimount mount o ro /dev/sda2 /tmp/bootmount mount o ro /dev/mapper/vg_root-lv_root /tmp/osmount mount o ro /dev/md127 /tmp/datamount mount o ro /dev/mapper/vg_log-lv_log /tmp/logmount mount o ro /dev/mapper/vg_shared-lv_shared /tmp/sharedmount 3 Mount backup partition in writeable mode mount L SYS_BACKUP /tmp/backup 4 Run the following command in the directory /tmp/bootefimount to get a backup of the uefi boot partition: cd /tmp/bootefimount tar cz p. > /tmp/backup/hana-bootefi.tgz 5 Run the following command in the directory /tmp/bootmount to get a backup of the boot partition: cd /tmp/bootmount tar cz p --one-file-system. > /tmp/backup/hana-boot.tgz 6 Run the following command in the directory /tmp/osmount to get a backup of the OS partition: cd /tmp/osmount tar cz p --one-file-system. > /tmp/backup/hana-root.tgz 4 NEC Corporation 2017

7 Run the following command in the directory /tmp/datamount to get a backup of the HANA data partition: cd /tmp/datamount tar cz p. > /tmp/backup/hana-data.

5 7 Run the following command in the directory /tmp/datamount to get a backup of the HANA data partition: cd /tmp/datamount tar cz p. > /tmp/backup/hana-data.tgz 8 Run the following command in the directory /tmp/sharedmount to get a backup of the HANA shared partition: cd /tmp/sharedmount tar cz p. > /tmp/backup/hana-shared.tgz 9 Run the following command in the directory /tmp/logmount to get a backup of the HANA log partition: cd /tmp/logmount tar cz p. > /tmp/backup/hana-log.tgz 10 Verify that 6 backup files exist in the backup partition and have a reasonable size: cd /tmp/backup ls lh 3.3. Reboot and HANA startup After the backup finished restart your NEC HANA appliance and start HANA 1 Reboot your server by typing shutdown r now 2 Remove the DVD media before the system boot starts. 3 Login to the OS, open a terminal and and enter the following commands to start HANA: su - <sid>adm HDB start 4 Run this command and check its output says OK and all listed processes have the status Green. If some are still Initializing, wait a while and issue the same command again: sapcontrol nr <instance no> -function GetProcessList 5 NEC Corporation 2017

SAP HANA Restore Guide (for A2040d SLES) 23 rd of January 2017 NEC SAP Global Competence Center

SAP HANA Restore Guide (for A2040d SLES) 23 rd of January 2017 NEC SAP Global Competence Center 1. Introduction 1.1. Purpose This manual describes a restore procedure of a HANA system from a full backup