Users Guide

Controller Starting RAID Level Target RAID Level Comments
RAID 6 RAID 0, RAID 5 With or without adding
additional disks
RAID 6 RAID 6 Add at least one additional disk
RAID 10 RAID 10 Without adding additional disks
PERC S140
RAID 0 RAID 0 With or without additional disks
RAID 1 RAID 1 Without additional disks
RAID 5 RAID 5 With or without additional disks
RAID 10 RAID 10 Without additional disks
NOTE: The order of the controllers displayed on Storage Management may dier with the order of the controllers displayed in
the Human Interface (HII) and PERC Option ROM. The order of the controllers does not cause any limitation.
NOTE: When creating virtual disks using software RAID controllers, the information related to the physical disks linked to the
virtual disk is enumerated or displayed on Storage Management after a short delay. This delay in displaying the information does
not cause any functional limitation. If you are creating partial virtual disks, it is recommended that you provide Storage
Management adequate time between each partial virtual disk creation process.
NOTE: RAID 10 virtual disk reconguration operation is not supported with Intelligent Mirroring.
Maintaining The Integrity Of Redundant Virtual Disks
Does my controller support this feature? See Supported Features.
The virtual disk Check Consistency task veries the accuracy of the redundant (parity) information. This task only applies to redundant
virtual disks. When necessary, the Check Consistency task rebuilds the redundant data.
To verify redundant information of a virtual disk:
1 Locate the controller on which the virtual disk resides in the tree view. Expand the controller object until the Virtual Disks object is
displayed.
2 Select the Check Consistency task from the virtual disk’s Tasks drop-down list box and click Execute.
Rebuilding Redundant Information
Does my controller support this feature? See Supported Features.
If you have a redundant virtual disk, you can reconstruct the contents of a failed physical disk onto a new disk or a hot spare. A rebuild can
take place during normal operation, but it degrades performance.
Managing Virtual Disk Bad Block Management
Virtual disk bad blocks are bad blocks on one or more member physical disks. The read operation on the virtual disks having bad blocks may
fail.
Storage Management generates a critical alert (2387) to notify you of the bad blocks on the virtual disk.
Virtual disk bad blocks are discovered when the controller performs any operation that requires scanning the disk. Examples of operations
that may result in this alert are:
Consistency check
Rebuild
Virtual disk format
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Virtual Disks