RAID5 or RAID6

Dears,

Which RAID system do you recommend for a file server with following criteria:

- stored documentation, NOT database. read more frequent.
- failover is crucial.
- No. of disks 10 * 300 GB

I won't used Mirror due to amount of disk uses.

SecurityStorage Hardware

Last Comment

uknet80

8/22/2022 - Mon

David

12/22/2013

Go RAID6. Remember RAID5 only protects against a single HDD failure, with no bad blocks on surviving drives. So not only are you exposed to 100% data loss during the time it takes to rebuild a RAID5, but also you are exposed to partial data loss if you have any unreadable blocks either before the failure, or during the rebuild.

Performance hit on writes between RAID6 & RAID5 is nominal.
So do you want to be able to get some sleep in event of a drive failure? If so, go RAID6.

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Gary Case

12/22/2013

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