Glossary

Channel Redundancy And Thermal Shutdown

What Is RAID?

RAID Controller Read, Write, Cache, And Disk Cache Policy

Write Policy

Span Edit

In the edit mode, you cannot alter the number of physical disks per span. If there are enough available

physical disks, you can reduce or increase the number of spans. You can also alter the contents of a span

by removing the span and selecting a new physical disk to comprise that span.

To successfully create a virtual disk, a minimum of two spans must exist always.

NOTE: If you select Span Edit, Intelligent Mirroring that is already been applied becomes invalid.

Virtual Disk Task: Reconfigure (Step 1 of 3)

Does my controller support this feature? See Supported Features.

The Reconfigure task enables you to change the virtual disk configuration. Using this task, you can

change the RAID level and increase the virtual disk size by adding physical disks. On some controllers,

you can also remove physical disks.

Before continuing with the virtual disk reconfiguration, you should be familiar with the information in

Starting And Target RAID Levels For Virtual Disk Reconfiguration And Capacity Expansion and Choosing

RAID Levels And Concatenation.

NOTE: You cannot reconfigure a virtual disk on a controller that is operating in cluster mode.

NOTE: You can create no more than 64 virtual disks on a controller. After you have reached this

limit, you can no longer reconfigure any of the virtual disks on the controller. But, for IR and PERC

H200 controllers, you can create only two virtual disks.

NOTE: On systems running the Linux operating system, if you reconfigure the same controller on

which the operating system resides, you may experience extremely slow system performance until

the reconfiguration is complete.

NOTE: If you want to reconfigure a virtual disk with an additional physical disk, the physical disk

must be of supported bus protocol, media type, sector size, T10 Protection Information capability,

and encryption capability.

NOTE: You may want to review Virtual Disk Considerations For Controllers. This section contains

considerations that also apply to reconfiguring a virtual disk on these controllers.