Extreme Cache Pool
Overview
For this function, NVMe SSDs installed in the CE or DE can be used as cache memory.
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
Display Contents
Extreme Cache Pool Information
| Item | Description |
|---|---|
Mode |
Whether the Extreme Cache Pool for the storage system is enabled or disabled is displayed. |
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#n or CE#n CM#n |
| Capacity |
The Extreme Cache Pool capacity (TB) that is set to the relevant CM is displayed. If the Extreme Cache Pool capacity is not specified, "0 TB" is displayed. |
Encryption |
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 |