Depending on the entry marked in the tree structure the following is displayed in the object window under the tab
To make them easier to find, the properties within the categories System, Devices and ServerView RAID Manager are listed in alphabetical order independently of the object.
Read-ahead | Advance read access to the memory takes place. |
No read-ahead | No advance read access to the memory takes place. |
Adaptive | When most of the last read accesses to successive sectors have taken place the controller switches to Read-ahead. When the read accesses have been distributed it switches back to No read-ahead. |
Write-back | The controller sends a signal to the server when the data has been written to the controller's cache. |
Write-through | The controller sends a signal to the server only when the data has been written to the disk. |
Adaptive | When this setting is chosen and a charged BBU is connected the same procedure is followed as described under Write-back, otherwise the controller behaves as for Write-through. |
Adaptive Write-back | This display appears when Adaptive is selected and the controller currently handles the write requests as described under Write-back. After a BBU failure the controller automatically switches to Write-through. |
Adaptive Write-through | This display appears when Adaptive is selected and the controller currently handles the write requests as described under Write-through. When a charged BBU is available again the controller automatically switches back to Write-back. |
Always Write-back | The controller always sends a signal to the server when the data has been written to the controller's cache even though the BBU is not present or currently not functional. |