Why You Need to Backup RAID Arrays






Mike Mavilia said...

I feel you have written right,Jazar. Trusting hard drive is really very hard. You never know, what will happen to it next. So this Backup RAID Arrays can be a good solution to it indeed.

virtual data room said...

There were two physical arrays, one for the database, and one for the logs, which allows up to two hard drives to fail simultaneously without losing any data.

Jared Palmer said...

I've been telling people online for years that RAID is not the same as having a backup, regardless of how much redundancy is in force. I run a data recovery company and constantly see RAID cases come in for recovery. Just this week I quoted the highest price ever for a case (almost $100K!). Customer had a 16 drive RAID 5 EMC SAN which was mirrored onto another EMC SAN hourly. They thought that was a pretty good "backup", until a disgruntled empoyee went and deleted the network share. A few hours later when they noticed, the mirroring had already happened.

There is just no substitute for an offline versioned backup solution.

jazar said...

Great comment Jared! Thanks for reminding all of us. Now with wannacry, cryptolocker and crap going on, offline versioned backups are more important that ever. If you get hit with ransomwear or some other kind of destructive malware, RAID or replication offers no protection.

Bob said...

Nice article.
Doing backup of RAID system must be done.
Multiple drives are not solution if you get ransomware or similar.
There should be one more offline copy.