SANtricity 11.8 Solutions

Change SSD Cache settings

You can edit the name of the SSD Cache and view its status, maximum and current capacity, Drive Security and Data Assurance status, and its associated volumes and drives.

This feature is supported on ETERNUS AB3100 and ETERNUS AB6100 controllers using HDDs with SAS extensions. Either NVMe SSD or SAS SSD can be used as SSD Read cache. However, they cannot be mixed.

Steps

From the Manage page, select the storage system with the SSD Cache.
Select Provisioning > Configure Pools and Volume Groups.
Select the SSD Cache that you want to edit, and then click View/Edit Settings.

The SSD Cache Settings dialog box appears.

Review or edit the SSD Cache settings as appropriate.

Field Details

Setting	Description
Name	Displays the name of the SSD Cache, which you can change. A name for the SSD Cache is required.
Characteristics	Shows the status for the SSD Cache. Possible statuses include: Optimal Unknown Degraded Failed (A failed state results in a critical MEL event.) Suspended
Capacities	Shows the current capacity and maximum capacity allowed for the SSD Cache. The maximum capacity allowed for the SSD Cache depends on the controller’s primary cache size: Up to 1 GiB 1 GiB to 2 GiB 2 GiB to 4 GiB More than 4 GiB
Security and DA	Shows the Drive Security and Data Assurance status for the SSD Cache. Secure-capable --Indicates whether the SSD Cache is comprised entirely of secure-capable drives. A secure-capable drive is a self-encrypting drive that can protect its data from unauthorized access. Secure-enabled — Indicates whether security is enabled on the SSD Cache. DA capable — Indicates whether the SSD Cache is comprised entirely of DA-capable drives. A DA-capable drive can check for and correct errors that might occur as data is communicated between the host and storage system.
Associated objects	Shows the volumes and drives associated with the SSD Cache.

Setting

Description

Name

Displays the name of the SSD Cache, which you can change. A name for the SSD Cache is required.

Characteristics

Shows the status for the SSD Cache. Possible statuses include:

Optimal
Unknown
Degraded
Failed (A failed state results in a critical MEL event.)
Suspended

Capacities

Shows the current capacity and maximum capacity allowed for the SSD Cache.
The maximum capacity allowed for the SSD Cache depends on the controller’s primary cache size:

Up to 1 GiB
1 GiB to 2 GiB
2 GiB to 4 GiB
More than 4 GiB

Security and DA

Shows the Drive Security and Data Assurance status for the SSD Cache.

Secure-capable --Indicates whether the SSD Cache is comprised entirely of secure-capable drives. A secure-capable drive is a self-encrypting drive that can protect its data from unauthorized access.
Secure-enabled — Indicates whether security is enabled on the SSD Cache.
DA capable — Indicates whether the SSD Cache is comprised entirely of DA-capable drives. A DA-capable drive can check for and correct errors that might occur as data is communicated between the host and storage system.

Associated objects

Shows the volumes and drives associated with the SSD Cache.

Click Save.