Follow the following steps for upgrading FAS 3020 to FAS 3120 also suggest that you note down the system ID and the serial numbers.
1 Triigger Latest Autosupport
2 Open a case with NetApp Global Support before head Swap
3 Lable the heads, shelves and cables before the upgrade. Perform a basic health check of the filers. Vol status -f, sysconfig -a, environment chassis status,etc. Make a copy of /etc of both the filers on your local drives.
4 Make note of qtrees, cifs shares(cifsconfig_shares.cfg), home directories(cifs_homedir.cfg) and snapmirror & snapvault relationships/schedules(snapmirror.conf, snapvault.conf). Also, make a copy of the related files to your pc.[Also, make sure you have completed the necessary backups to tape.] I assume that you have snapmirror and snapvault licenses on the 3020 controller if you dont have it then no need to check snapmirror and snapvault
5 Run 'disk show -v' and note down all the disk serial numbers along with the owner information.( V.V. Imp)
6 Perform a Snapmirror & Snapvault update on all the volumes & qtrees respectively. if you have the licenses for the same.
7 Disable cluster: filer> cf disable.
8 Do CIFS terminate. Also, disable snapmirror and snapvault using commands "snapmirror off" and "snapvault off" respectively.
9 Check if the FAS 3020 uses hardware base disk ownership or software base disk ownership if it uses hardware base dick ownership then reassign disk to software base disk ownership since it is good to have softwarebase disk ownership for safer side. to reassign disk to software base disk ownership boot the controller to maintenance mode and enter the following command disk upgrade_ownership the disk upgrade_ownership converts the system to software base ownership then exist the maintenance mode by giving command halt and boot DATA ONTAP by giving the command on loader prompt boot_ontap
10 after the filer boots perfomr the health check
11 Create a new volume called temproot on FAS 3020 this will be the new temparory root volume
12 Using volcopy, copy the contents of your original root volume, including all subdirectories and their contents to the newly created temp volume, temproot:
vol restrict temproot
vol copy -S start /vol/vol0 /vol/temproot
vol online temproot
13 Make the temproot volume the root directory: vol options temproot root
14 Do a software install and download on FAS 3020 only if the DOT is not up-to-date.
CAUTION: Do NOT reboot after this step.
15 Halt the current FAS 3020 filer head. Then turn power off. Turn off the power to the disk shelves.
16 Properly ground yourself. Disconnect the cables from the FAS 3020 controllers, remove the controllers from the equipment rack or system cabinet, and then install the FAS 3120 controllers as described in the FAS 3120 Installation and Setup instructions.
17 Cable the FAS 3120 controllers as described in the FAS 3120 Installation and Setup instructions and the Active/Active Configuration Guide.
18 Turn on the disk shelves and wait a full minute for them to initialize and become synchronized.
19 Turn on the FAS 3120 system and boot into maintenance mode view disk ownership on FAS 3120 by entering the command disk show -v The console displays a list of all the disks visible to the system, whether the system owns them or not.
20 Assign the disks on the shelves that you migrated to the FAS 3120 system by entering the following command:disk reassign -s old_sysid -d new_sysid
21 halt the system to exist from the maintenance mode and boot the system to DATA ONTAP ensure that filer are operating correctly and resolve any errors enconter
