To change volume cache – Dell Compellent Series 30 User Manual
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Storage Center 5.5 System Manager User Guide
Volumes
To change advanced volume properties
1 Click the Advanced tab.
2 Do any of the following:
•
Modify the Volume Space Consumption Limit
•
Allow Replays to coalesce into active Replay to allow frozen Replays to coalesce into
an active Replay.
•
Import data to the lowest tier of storage available based upon the configuration of the
storage profile of the volume. No Replays are taken for the volume during data
import. If this option is unchecked, by default data is written to the highest tier of
storage configured for the volume.
•
If there are volumes on storage running the Open VMS operating system, this tab
displays the Unique Disk ID (UQ ID) used to identify the volume.
You may need to reset this value when recovering a volume from a Replay. For
example, if you mapped a volume to a server, took a Replay, and then mounted a
new view volume up to the server; the new view volume would have a new Disk ID
and you would have to modify the value in this window to match the original Disk ID
for the volume before the server will recognize it as the same volume.
To change volume cache properties
1 Click the Cache tab.
2 In the Volume Properties window, click the Cache tab. (Caching that is set system-wide
overwrites individual volume cache.)
3 Do any of the following:
•
Select or clear write cache. Write Cache holds written data in volatile memory until it
can be safely stored on disk. Write Cache protects in the event of a power loss.
•
Select or clear read cache. Read Cache anticipates the next Read and holds it in
quick volatile memory, thus improving Read performance. Read Ahead can be used
for sequential reads, such as video.
4 Click OK to save changes.
To change volume folder properties
1 Click the Folders tab. The Volume Folder window appears. System Manager lists all
volume folders and subfolders. The folder in which the volume resides is highlighted.
2 To move the selected volume to a different folder:
a In the Volume Properties window, click Folder. A list of volume folders appears.
b Select a folder to which to move the volume.
c Click OK. The folder is moved.
To change volume information properties
1 Click the Info tab. The Info window appears. Information includes:
•
Date Volume was created