NEC Storage M100 Series User Manual page 151

User Guide
Parameter
Pool list
Enable the copy back mode
Perform the following steps to bind a hot spare:
1. Select one or more physical disks for hot spare binding.
When you select the physical disks, pools with Enable Hot Spare are displayed in bold letters.
2. Click Set to display the following confirmation message.
3. Click Yes to perform hot spare binding.
Release 6.0
Description
Select a physical disk to create a hot spare.
When you select the physical disk for hot spare binding,
Enabled is displayed under the Enable Hot Spare field of
the Pool list. Pools that are enabled by a newly bound hot
spare are shown in bold.
Select this option to enable copy back mode.
When a faulty disk is replaced by a new disk, copy back
mode automatically copies back the data to the new disk.
 For slots having no physical disks, the slot names and check boxes are
grayed out in the view display, and the slots are not listed in the list
display.
 For physical disks for which a pool has been bound, the check boxes
are grayed out in the view display, and the disks are not listed in the list
display.
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Chapter 5 Initializing a Disk Array (FC)