Storage Options - Linksys NSS4000 Series Administrator's Manual

Storage Options

The Storage Options page lets you define the following:
• Idle Drive Spin Down:
the disk drives after a predefined time of inactivity.
• RAID Rebuild Priority:
prioritizes the RAID rebuild and allocates the system resources based on the current workload
and need for responsiveness.
• Degraded Mode Grace Period: Set the period of time after which the system automatically
shuts down degraded arrays. You can manually restart RAID arrays automatically stopped by
using degraded mode management. Warning messages are sent out periodically while the
RAID array is degraded.
• Enable Global Spares: Allow RAID arrays defined in the system to share spare drives. If this
option is disabled, a RAID array can only use a spare that has been added to that particular
array. If this option is enabled, spare drives added to one RAID array may be reallocated by
the NSS to another RAID array. For example, if RAID A is a two-drive RAID1 that is not
degraded and RAID B is a degraded two-drive RAID1, if you add a spare drive to RAID A,
the NSS automatically gives the spare drive to RAID B to enable RAID B to resync. This option
is only relevant when you use network disks (via storage virtualization). A system limited to
local disks lets you only build up to two, two-disk RAID arrays, but have no spares.
Chapter 4: Storage
Storage Options
Network Storage System (NSS) Administrator Guide
(see Setting the Spin Down
(see Setting the RAID Rebuild
Time) Configure the NSS to spin down
Priority) Control how the system
Chapter
4
71