adding mirrors to a pool or adding more pools?

[vajonam]

Got a question. what is the better way to add storage? 

zpool create tank c1t0d0 c1t1d0

zpool add tank mirror c1t2d0 c1t2d0 

creating a pool with two mirrors? 

or creating a new pools everytime? 

zpool create tank c1t0d0 c1t1d0

zpool create tank2 c1t2d0 c1t3d0

[Andre Lue]

Depends on your schema/goal.
Pro 'add'
(assumming enough ports, power n being able to buy same size drives) you gain a new vdev n more performance w each add.
-one pool to maintain
-grow indefinitely till power, ports are out

Pro new pool
-can buy newer, bigger drives in pairs each new pool
-can replace each fail of an old pool and expand when both have been replaced

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[vajonam]

Think my main goal is have resilience to failures. i.e. hard drives. thinking about adding it to a pool seems like putting all your eggs in 1 basket. if you have a problem with something then you cant import the pool, while splitting up means you can import parts of the pool.. think I will stick with the new pool model.

is there way to do a unionfs in solaris where I behind the scene I can link the folders? but they are distinct pools? that way I dont have to maintain multiple exports and mount points etc.

On Friday, May 26, 2017 at 9:27:07 AM UTC-4, dre2kse wrote:

Depends on your schema/goal.
Pro 'add'
(assumming enough ports, power n being able to buy same size drives) you gain a new vdev n more performance w each add.
-one pool to maintain
-grow indefinitely till power, ports are out

Pro new pool
-can buy newer, bigger drives in pairs each new pool
-can replace each fail of an old pool and expand when both have been replaced

On May 26, 2017 9:11 AM, "vajonam via EON ZFS Storage" <eonstorage+APn2wQeaGveeVtAFGo6StkzOM-yyat2Qk_yK0TpsH4zA9NaHLqHYt@googlegroups.com> wrote:

Got a question. what is the better way to add storage? 

zpool create tank c1t0d0 c1t1d0

zpool add tank mirror c1t2d0 c1t2d0 

creating a pool with two mirrors? 

or creating a new pools everytime? 

zpool create tank c1t0d0 c1t1d0

zpool create tank2 c1t2d0 c1t3d0

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