Administrator Guide
Set Storage Center Cache Options
Global Storage Center cache settings override cache settings for individual volumes. Read cache improves read performance by
anticipating the next read and holding it in volatile memory. Write cache increases write performance by holding written data in volatile
memory until it can be safely stored on disk.
Steps
1. If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane of Unisphere
Central.
2. Click
Summary.
The Summary view is displayed.
3. Click (Settings).
The Storage Center Settings dialog box opens.
4. Click the Storage tab.
5. Select or clear the Read Cache Enabled and Write Cache Enabled checkboxes.
6. Click OK.
Schedule or Limit Data Progression
Schedule when Data Progression runs and limit how long it is allowed to run.
Steps
1. If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane of Unisphere
Central.
2. Click
Summary.
The Summary view is displayed.
3. Click (Settings).
The Storage Center Settings dialog box opens.
4. Click the Storage tab.
5. In the Data Progression Start Time field, select or type the time at which Data Progression starts running daily.
6. From the Data Progression Max Run Time drop-down menu, select the maximum time period that Data Progression is allowed to
run.
7. Click OK.
Set RAID Stripe Width
The RAID stripe width controls the number of disks across which RAID data is striped. The stripe widths for RAID 5 and RAID 6 are
independently configured.
Steps
1. If you are connected to a Data Collector, select a Storage Center from the drop-down list in the left navigation pane of Unisphere
Central.
2. Click
Summary.
The Summary view is displayed.
3. Click (Settings).
The Storage Center Settings dialog box opens.
4. Click the Storage tab.
5. From the RAID 5 Stripe Width drop-down menu, select a stripe width of 5 or 9 disks.
6. From the RAID 6 Stripe Width drop-down menu, select a stripe width of 6 or 10 disks.
7. Click OK.
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Storage Center Maintenance