Extreme Cache Pool
Overview
This function displays the following Extreme Cache Pool information.
The Extreme Cache Pool setting (enabled or disabled)
Extreme Cache Pool capacity of each CM
Setting contents of the tuning parameters
This function is supported in the ETERNUS DX100 S5/DX200 S5.
User Privileges
Availability of Executions in the Default Role
Default role | Availability of executions |
---|---|
Monitor | |
Admin | |
StorageAdmin | |
AccountAdmin | |
SecurityAdmin | |
Maintainer |
Refer to "User Roles and Policies" for details on the policies and roles.
Display Contents
![](../images/SystemExtremeCachePool.png)
Extreme Cache Pool Information
Item | Description |
---|---|
Mode |
Whether the Extreme Cache Pool for the storage system is enabled or disabled is displayed. |
Usage |
The usage of the Extreme Cache Pool (Read-Only Cache) is displayed. This item is not displayed if "Mode" is "Disable". |
Extreme Cache Pool Detail Information
The following items are only displayed when "Mode" is "Enable".
Item | Description |
---|---|
CM |
All the CMs in the storage system are displayed. CM#x x: CM number |
Capacity |
The Extreme Cache Pool capacity (GB) that is set to the relevant CM is displayed. If the Extreme Cache Pool capacity is not specified, "0 GB" is displayed. |
Encryption by CM |
The encryption status of the Extreme Cache Pool area is displayed.
|
Extreme Cache Pool Tuning Parameter Information
The following items are only displayed when "Mode" is "Enable".
Item | Description |
---|---|
Initial Caching Threshold |
The threshold (1 to 16) that affects how frequently data is stored in Extreme Cache Pool is displayed. If the set value is exceeded, it is assumed that the relevant data is read frequently and the data is stored in Extreme Cache Pool. This parameter specifies the threshold value that is used until the Extreme Cache Pool memory is full after Extreme Cache Pool is enabled. |
Caching Threshold |
The display contents vary depending on whether the cache data is relocated. If the cache data is relocated, "Caching Threshold" (1 to 16) is displayed as the threshold after the Extreme Cache Pool memory is full. If "Caching Threshold" is exceeded, it is assumed that the relevant data is read frequently and the data is stored in Extreme Cache Pool. If the cache data is not relocated, "Not relocate Cache Data" is displayed. |
Caching Priority |
The concurrency (1 to 9 or 10 (Fastest)) of the staging process when data is stored in Extreme Cache Pool is displayed. |
Monitoring I/O |
The I/O type for storing data in Extreme Cache Pool is displayed. Read Read / Write |