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Addonics Technologies RTM4R5EU3 User Manual

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Notes on Spare Drives using the Easy RAID Setting (EZ)
When EZ is function is ENABLED, the auto-rebuilding to spare drive is automatic.
The degraded RAID group will start rebuilding automatically by using the existing 
spare drive.
* Spare drive can be either plugged before RAID building or a new drive can be plug 
as the spare drive when RAID rebuild is required.
A. 
Which port acts as a spare drive?
 
The last drive will automatically become the spare drive.
 
For a 3-drive RAID5 with spare:
 
Drives connected to SATA ports 1~3 belong to the active RAID5 array and  
 
drive connected to port 4 is the spare.
 
For a 4-drive RAID10 with spare:
 
Drives connected to SATA ports 1~4 belong to the active RAID10 array and  
 
drive connected to port 5 is the spare.
 
For a 2-drive RAID1 with spare:
 
Drives connected to SATA ports 1& 4 belong to the active RAID1 array and  
 
drive connected to port 5 is the spare.
B. 
When will rebuild action start?
 
• 
When the raid fails and EZ is enabled, the HPM-XA will  
 
 
 
automatically rebuild the RAID group using the spare.
 
• 
When the raid fails and EZ is disabled, the HPM-XA will NOT  
 
 
rebuild the raid group unless you install a good drive to replace the  
  failed 
drive.