Areca ARC-1130 User Manual

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global hot spare disk drive. To effectively use the global hot 

spare feature, you must always maintain at least one drive that 

is marked as a global spare.

The hot spare must have at least the same capacity as the 

drive it replaces.

The SATA controller chip includes a protection circuit that supports 

the replacement of SATA hard disk drives without having to shut 

down or reboot the system. A removable hard drive tray can de-

liver “hot swappable” fault-tolerant RAID solutions at prices much 

less than the cost of conventional SCSI hard disk RAID control-

lers. This feature provides advanced fault tolerant RAID protection 

and “online” drive replacement.

If a disk drive is brought online into a system operating in de-

graded mode, The SATA RAID controllers will automatically de-

clare the new disk as a spare and begin rebuilding the degraded 

volume. The Auto Declare Hot-Spare function requires that the 

smallest drive contained within the volume set in which the failure 

occurred. 

In the normal status, the newly installed drive will be reconfigured 

an online free disk. But, the newly-installed drive is automatically 

assigned as a hot spare if any hot spare disk was used to rebuild 

and without new installed drive replaced it. In this condition, the 

Auto Declare Hot-Spare status will disappeared if the RAID sub-

system has since powered off/on.

The Hot-Swap function can be used to rebuild disk drives in arrays 

with data redundancy such as RAID level 1, 1E, 3, 5, and 6.