Fujitsu Eternus web GUI - Modify RAID Group Parameters

Chapter 6 RAID Group Management
6.2 Functions in the Action Area for RAID Group
ETERNUS Web GUI User’s Guide
129
Copyright 2011 FUJITSU LIMITED P2X0-1090-02ENZ0
→ A confirmation screen appears.
3 Click the [OK] button.
→ RAID group expansion starts.
4 Click the [Done] button to return to the [RAID Group] screen.
End of procedure
6.2.6 Modify RAID Group Parameters
This function tunes RAID group performance by specifying the Disk Command Multiplying Fac-
tors (DCMF) and rebuild priority.
• DCMF
DCMF is a coefficient for the command issuance amount of the disk. Specify this parameter to
improve the sequential writing access performance. The bigger the value is, the more com-
mands issue. Specify the DCMF according to the RAID group operation.
• Rebuild Priority
Specify the level to give priority to rebuild, copyback, and redundant copy instead of host
access. Specifying a larger "Rebuild Priority" value may improve redundant copy perfor-
mance.