Server won't boot after 2 drives in raid 10 failed...

[Guru]

Hi all,

A mate of mine just phoned to say he has a server that won't boot.

He has 4 drives in raid 10, 2 have failed and the server will not boot.

I always thought you could lose 2 drives and still be ok?

Cheers,

G

 

[Guru]

Sorted it now.

Ended up going down there and removing one of the HDD as it was cold to the touch.

All working now new HDD ordered.

 

[Guru]

Ah... so because it's striped each mirror only contains half of the data being saved to the disk. So if one mirror goes completely so does half the data hence complete failure.

I think I get it now.

Would be mega harsh to have 2 disks fail in the same mirror then!

Thanks,


G

 

[Guru]

Its fairly likely (and unlucky) to lose two in a short time as the most stressful point in a disks life can be rebuilding another disk that has failed in a raid array.

Hence why a lot of decent SAN's and NAS's have DP.

DP?

I'm pretty sure you don't mean the term I'm thinking of lol