Pool Configuration

Hello Guys,

So, finished building a 16x16TB server. Now, my question is how many vdevs should i use? A single or two or more than that?

On old forum, i read somewhere about the safe limits for the vdev sizng. Not sure where to find it again. If someone can help, it would be really appreciated.

Thanks

Depends on your use case

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General idea:

Bulk storage: 2 x 8-wide raidz2/3, or 2 x 7-wide with spares.

Block storage (iSCSI): 5 x 3-way mirror + spare, or 8 x 2-way mirror.

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So, as per the ZFS Primer, here is what it says:

We do not recommend using more than 12 disks per vdev. The recommended number of disks per vdev is between 3 and 9. With more disks, use multiple vdevs.

Does this mean the safe could be two vdevs containing 8 vdevs each? I heard that more the vdevs, more the IOPS and speed improvements. Is that true?

Also, would it be safe when using 8 vdevs containing two drives, where one drive is mirror in each vdev set? Is that a safe layout?

You want to read the following.


But to give you short answers:

Yes and Yes.

Not particularly.

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Will give a read and get back to you mate!