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Safety Information and Technical Specifications
Viewing and Changing Logical Drive Properties
To view or change logical drive properties, follow these steps:
1. On the Management Menu, select Objects → Logical Drive.
2. Select View/Update Parameters.
The only logical drive properties you can change are Disk WC (Disk Write Cache)
and Read Ahead (see Section 3-3, “Setting the Hard Disk Write Cache and Read
Ahead Policies”). The other properties are view-only.
Viewing Physical Drive Properties
To view physical drive properties, follow these steps:
1. On the Management Menu, select Objects → Physical Drive.
2. Highlight a physical drive on the list that appears and press Enter.
3. Select Drive Properties from the menu.
The drive properties are Device Type (Disk), Capacity, Product ID, and Revision
No. These properties are view-only.
3-8 Forcing Drives Online or Offline
The MegaRAID BIOS CU enables you to force drives online or offline. You may want
to force a drive of a redundant array offline so that a hotspare drive will automati-
cally replace it. An auto rebuild will begin immediately if the MegaRAID BIOS CU
finds a valid hotspare drive to replace the offline drive.
You may need to force a drive online if it has gone offline due to a power failure. The
MegaRAID BIOS CU will not allow a drive to be forced online if its size is smaller
than the defined size of the array.
To force a drive online or offline, follow these steps:
1. On the Management Menu, select Objects → Physical Drive.
2. Highlight a physical drive that is a member of an array and press Enter.
3. Select Force Offline or Force Online from the menu.
If the drive was online, its status changes to FAIL. If it was offline, its status changes
to ONLIN.
