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What setup do I need?

S

Soldier101

Gawd
Joined
Jan 8, 2002
Messages
639
I want to build a 10x 2 or 10 x 3 TB file server running solaris with ZFS. This will just house all of my downloads, media, music, basically everything.

I want to have redundancy that way if a drive or 2 fails I can replace them and not lose anything.

I know I will need a raidz or raidz2 or raidz3 setup depending on the number of drives I want to allow to fail.

My question is, when it comes to vdevs is there something specific I need to do? I hear the more vdevs the more performance you can get. Is it possible to just setup 10 vdevs each with 1 drive in it with a raidz setup or do you have to setup the vdevs based on the raidz level you want to run?
 
Before you start, decide how important your data is, take a sharpie, look into a mirror and write "RAID/ZFS IS NOT A BACKUP" on your forehead!
 
data is fairly important in the fact that I would rather not download it all over again. IT would be an inconvenience but it would not be detrimental. I understand that backups or replication would be necessary for full data safety.
 
found an article that states I would create the vdevs in the raid format I want and then add the vdev to the pool. Which essentially answered my question. The raid setup is done on the vdev level not the pool level....for some reason I was thinking the pool as a whole could raid across the entire grouping of vdevs
 
Well, with several vdevs, the zpool is sort of a RAID0 of the vdevs. That's why it gives better performance. But if any one vdev is lost, then all the zpool is lost.
 
Aesma said:
Well, with several vdevs, the zpool is sort of a RAID0 of the vdevs. That's why it gives better performance. But if any one vdev is lost, then all the zpool is lost.
Click to expand...

Yeah, so as long as you have each vdev be in a raidz or higher level you can suffer the loss of a drive....

with a 10 drive setup I guess 2 x 5 disk vdevs would be the best configuration?
 
For your use as a file/media server there is no reason to 2 x 5 disk (RAIDz) vdevs. For your use I'd go straight RAIDz2 across all 10 disks. Performance will be well beyond what you could even use across gigabit. You would have the same capacity as 2 x 5disk RAIDz, but more importantly you would have better drive redundancy. 2 x RAIDz means you can only count on single drive redundancy. With the amount data and drive sizes your talking about I'd be MUCH more comfortable with 2 drive parity from RAIDz2.
 
Silenus said:
For your use as a file/media server there is no reason to 2 x 5 disk (RAIDz) vdevs. For your use I'd go straight RAIDz2 across all 10 disks. Performance will be well beyond what you could even use across gigabit. You would have the same capacity as 2 x 5disk RAIDz, but more importantly you would have better drive redundancy. 2 x RAIDz means you can only count on single drive redundancy. With the amount data and drive sizes your talking about I'd be MUCH more comfortable with 2 drive parity from RAIDz2.
Click to expand...

Thanks for the information! I have been reading and reading and reading and trying to learn all I can!
 
Silenus said:
For your use as a file/media server there is no reason to 2 x 5 disk (RAIDz) vdevs. For your use I'd go straight RAIDz2 across all 10 disks. Performance will be well beyond what you could even use across gigabit. You would have the same capacity as 2 x 5disk RAIDz, but more importantly you would have better drive redundancy. 2 x RAIDz means you can only count on single drive redundancy. With the amount data and drive sizes your talking about I'd be MUCH more comfortable with 2 drive parity from RAIDz2.
Click to expand...

This is true, dont worry about performance.

I have 8x 2TB in RaidZ1, I get over 700MB/sec writes and 1000MB/sec reads.

You would need a 10Gbit connection to start to worry about performance.
 
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