Hi Hari,
Make sure a backup plan ,
These files should be saved for all upgrade
Save all important config files like /etc/rc, /etc/hosts, nsswithc.conf etc |
Save a perfstat o/p from both the nodes during regular business hours |
Download softwares from NOW sites.
Go to http://now.netapp.com/NOW/download/tools/diskshelf/ and check the version you need to upgrade.
Lets take example if you are using DS14mkt ATFCX module search and find in latest firmware column,it takes to you a new downloading window and instructions to upgrade.
Setup a Net boot environment- just in case we have any issue with booting after upgarde
https://kb.netapp.com/support/index?page=content&id=1010220
Make sure all disk names in handy.
Disable scrubs
stop dedupe and verify the your able to login through console.
Verify system status by sysconfig -a
check CPu as less than 50% systat
login through putty,ensure no disk failure.
Here you go:Shelf fw
Download latest copy to etc/shelf_fw dir...
set options shelf.fw..ndu.enable on
execute "storage download shelf" verify this by sysconfig -a
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Disk fw upgrade.
Verify raid.background_disk_fw_update.enable on.
Move old disk_fw to new directory for back out.
Copy downloaded fw to etc/disk_fw on both,(clustered),monitor console for disk upgrade proces.
any Issues::
raid.background_disk_fw_update.enable off.
Fallback for disk,
disable raid.background_disk_fw_update.enable off
Manuvally do it by .
Execute >"disk_fw_update "hba-id.shelf-id.disk-number" " for each disk one by & one and node at a time (refer disk to be upgraded sheet for disk details)
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Enable scrub dedup .
Dont do it yourself unless you are NCDA R NCIE.
This is for knowledge purpose and gives good idea,Commands and backout plan change according to versions filers(controllers) and modules.
All the best.Hope gives some idea.
Regards
Senthil Baskaran