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Sun Storage 7000 Unified Storage System: How to Add L2ARC Cache SSDs (Readzillas) to a Pool (Doc ID 1333120.1)

Last updated on APRIL 21, 2021

Applies to:

Sun ZFS Storage 7320 - Version All Versions and later
Sun ZFS Storage 7420 - Version All Versions and later
Sun Storage 7720 Unified Storage System - Version All Versions and later
Sun Storage 7310 Unified Storage System - Version All Versions and later
Oracle ZFS Storage ZS3-2 - Version All Versions and later
7000 Appliance OS (Fishworks)



An introduction to the L2ARC read cache Solid State Drive devices known as Readzillas in the ZFS Storage Appliance 7000 series, and procedures for adding them to pools.



Intended for all storage administrators who wish to configure their ZFS Storage Appliance 7000 series systems with Readzillas to improve read performance for certain I/O workloads.


Starting in Appliance Firmware Release AK 8.6.0 (2013.1.6.0), administrators can remove read cache drives from pools using the BUI or CLI.

From the BUI online help: Removing a Cache or Log Device from an Existing Storage Pool (BUI)

Use the following task to remove a read cache or log device from an existing storage pool.

Before You Begin

Do not perform a pool configuration operation while a disk firmware upgrade is occurring. To check if an upgrade is in progress, navigate to Maintenance > System.

1.  Go to Configuration > Storage.
2.  From the Available Pools list, select an online pool from which to remove the device.
3.  Click REMOVE.
4.  Select the number of log and cache devices to be removed from the storage pool.

Note - If the log devices use a mirrored profile, a message reminds you to select an even number of log devices to remove. If they use a striped profile, you may remove an even or odd number of devices.

5.  Click COMMIT.


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