7 mirrors striped can potentially be more or less fault tolerant. In theory, 7 drives can fail without any data loss or performance penalty. Or just one if two in the same mirror fail.
Raidz2 would handle 2 disk failures regardless of which disks.
Striped mirrors will perform better, especially if using Virtual Machines (Where raidz/raid5 has major issues).
Just out of my experience:
Don't do compression, when expecting lots of IO.
This can screw vms and applications, without even recognising the bottleneck in the first place.
Dev pointing at vm team, vm team pointing at storage guys, storage guys pointing back at devs:))
ZFS compression is amazing, in fact, it increases performance significantly as it reduces the amount of disk IO to slow platters.
ZFS compression is intelligent (will short circuit when it finds uncompressible media), completely transparent, and almost every scenario increases performance.
The only time ZFS will give you a problem is when you have heavily CPU bound processes running on the same cores as ZFS.
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Gmirror can be another pretty choice..
You will use raidz1 or raidz2?
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I’m thinking 3 way stripe of raidz or striped mirrors with one left over.
Hum, with mirror you will gain performance but for example raidz2 is much failure tolerant
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7 mirrors striped can potentially be more or less fault tolerant. In theory, 7 drives can fail without any data loss or performance penalty. Or just one if two in the same mirror fail.
Raidz2 would handle 2 disk failures regardless of which disks.
Striped mirrors will perform better, especially if using Virtual Machines (Where raidz/raid5 has major issues).
Are you building a NAS, right?
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Anyway ZFS is a smart choice ;)
Posted using Partiko Android
Just out of my experience:
Don't do compression, when expecting lots of IO.
This can screw vms and applications, without even recognising the bottleneck in the first place.
Dev pointing at vm team, vm team pointing at storage guys, storage guys pointing back at devs:))
ZFS compression is amazing, in fact, it increases performance significantly as it reduces the amount of disk IO to slow platters.
ZFS compression is intelligent (will short circuit when it finds uncompressible media), completely transparent, and almost every scenario increases performance.
The only time ZFS will give you a problem is when you have heavily CPU bound processes running on the same cores as ZFS.
Hi @themarkymark!
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