Deleting a dedicated spare, Enabling dynamic spares – StorCase Technology CSI-to-SCSI Single & Dual RAID User Manual

Page 90

Dual RAID Module User's Guide - Rev. A03

StorCase Technology, Inc.

Configuration

Deleting a Dedicated Spare

This function allows the user to delete a dedicated spare drive from an array at anytime.

To delete a dedicated spare:

Select Array Menu from the System Menu and press Enter.
The Select Array screen will display, along with a list of existing arrays (Figure 19).

Select the desired array and press Enter.
The Array Menu should now display (Figure 20).

Select Delete Spare and press Enter.
The List of Available Drives screen should now display.

Select the drive to delete as a spare and press Enter.
The system will confirm your request to delete the spare.

Select Yes and press Enter.

Enabling Dynamic Spares

This function allows the user to use all of the disk drives in redundant arrays, without assigning

one as a spare. For example, if the Dynamic Spares option is enabled and a drive fails, the

drive can be replaced and the controller will rescan the bus; it will then find the new disk drive

and automatically start reconstruction of the array.
With the Dynamic Spares option enabled, the controller will first look for a dedicated (or a pool

spare, if no dedicated drives are available) drive for reconstruction (if spares or drives are

available).

NOTES:

The spare or available drive must have enough capacity to replace the

smallest member in the array, otherwise the controller cannot use it.
Make sure the spare or available drive does not contain any metadata

(refer to section "Clearing Metadata from a Drive" for further information).
Performance in systems without a SAF-TE Processor Board will decrease

if an array becomes critical (with this option enabled) and there are no

available drives to start a reconstruct. To minimize performance impact,

increase the rescan rate.