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Test restore your backups (self.sysadmin)

submitted 5 days ago by WagnasT to c/sysadmin

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Went to do a test restore of one of my databases and I noticed the dump files over the last few months were all 0kb. Glad I caught it this way and not because I needed to restore. Put it on your calendar, schedule a test restore of your critical stuff a couple times a year. I know y'all are busy but it is worth the time and effort. A backup you can't actually restore isn't a backup at all.

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[–] [email protected] 20 points 5 days ago (1 children)

3-2-1...

Three copies of your data, in two physical locations, equals one backup. And it's not real until you do a test restore yes indeed!

[–] [email protected] 4 points 5 days ago (1 children)

My understanding of 3-2-1 is different;

3 copies of your data, on two different storage mediums, with one offsite.

E.g. SSD live copy, hot HDD backup, cold HDD backup offsite.

Is this wrong?

[–] [email protected] 1 points 3 days ago

Afaik that's the common read on 3-2-1 though im wondering these days if the "separate mediums" still is that relevant to me it means storing data on different types of disks however in the end all is zfs for me so not really a different medium (since same file system)? Anyway I still have to set up my off-site backups anyway to adhere to 3-2-1 :D