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Storage pool - SSD Cache fas2500 - ontap 8.3p1

I have a fas2554 - twin controller

in this device i have 2x2tb sata drives

and 4 x ssd drives for cache

 

1.JPG

these drive as above are spare

 

when i try to create a storage pool i get the message:

 

(not enough disks)

 

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so online help directs me to create via cli:

 

storage pool create -storage-pool SP1 -disk-list 1.0.1,1.0.2,1.0.3,1.0.0

 

Error: command failed: Disk "1.0.1" cannot be shared. Reason: Disk is not

       partitionable.

 

 

can any body direct me on how to setup the ssd cache on this device?

 

Re: Storage pool - SSD Cache fas2500 - ontap 8.3p1

With Storage Pools, we need a physical spare... with 4x SSD, create the pool with 3 disks.  Then you have 1 spare.  Then modify the aggregate with hdd "aggr modify -hybrid-enabled true" then "aggr add-disks -storage-pool spname -allocation-units xx" to assign allocation units... 2 per node available by default in the HA-Pair (4 allocation units total).

Re: Storage pool - SSD Cache fas2500 - ontap 8.3p1

 

 

 

 

 

 

 

Re: Storage pool - SSD Cache fas2500 - ontap 8.3p1

Any chance those disks are already partitioned (probably, during installation)?


You cannot use SSDs that have been partitioned for root-data partitioning in a storage pool

 

Re: Storage pool - SSD Cache fas2500 - ontap 8.3p1

Good question..check if in use already...or could also be disk assigment.. shared by both nodes, but to start check where they are assigned.

Re: Storage pool - SSD Cache fas2500 - ontap 8.3p1

so, as this is a blocker to putting data on the system (i want it working correctly before it goes into production) i decided to zero the disk and setup a fresh

 

went thru the setup again and its the same as before!

 

as in setup, i selected the option as below, so no the disk should not be partioned

 

n5.JPG

Re: Storage pool - SSD Cache fas2500 - ontap 8.3p1

disks as per image above, 2 per controller

Re: Storage pool - SSD Cache fas2500 - ontap 8.3p1

Let's go check the CLI. What is the output of storage aggregate show-spare-disks ?

Re: Storage pool - SSD Cache fas2500 - ontap 8.3p1

n8.JPG

Re: Storage pool - SSD Cache fas2500 - ontap 8.3p1

You can create the 3 drive storage pool from the CLI... you have 1 virtual spare for data and root so all set there with the aggregate already.