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Our compnay is planning to migrate old Solaris(8/9/10) Servers to new data-center, have to physically re-locate few servers after shutting it down...
How i can make sure all will be up fine after re-location,Not dropping then them is good. Moving them very gently is even better. Remembering/Marking how to plug them in is good also.
what if something goes wrong?Consider it a challenge
what backups i should have and how to take them & restore/recover them?You should have this in place anyway. And a DR plan.
Any other suggestion to make preparation would help .....You should probably hire specialist help. Any consider whether you should really be buying new servers and migrating onto those, especially if your maintenance has lapsed.
These answers seem tite, but to give meaningful responses requires a lot more detail and your cost/risk/benefit situation. A NFS or iSCSI NAS solution might be part of your strategy if you have nothing else, but it all really requires planning, and there is probably no way to impart the skills to yourself. But you possibly need a specialist help.
DBA2011 wrote:If something has gone wrong you may find it difficult to back up what you want.
how to backup & restore/recover those servers if something goes wrong?
This is too generic a question ... and there are many answers ... and the best answer is what you have practiced.
If you must have a specific, and I assume you are using UFS filesystems, then perhaps consider ufsdump and ufsrestore:
See: http://docs.oracle.com/cd/E19455-01/805-7228/6j6q7uf0u/index.html for example.
Amanda might be an alternative. Or get netbackup or Tivoli ... etc.
I think, just take out mirror disk for each server as a OS backup, and take it care gently. make sure not drop when you move to another data center.
if you use SAN technology for your external disk, it more safe as long as you use enterprise storage and move it very gently also.
i agree if you dont already have a backup solution... which is something that should be seriously considered.
Use ufsdump/restore. You should backup all filesystems but if you are able to recreate or dont care about specific filesystems then you dont need to.
If you already have a backup solution then you should run full backups the night before (or as close as possible followed by incremental backups for subsequent nights) Once you have those tape you should be go to go.
I alos like the idea of mirroring the drives and transporting those seperately - that would be a full back up....