EonNAS 3000 Series Hardware Manual
29
2.2
Installing Hard Drives
Hard drives are purchased separately (please contact your vendor for details).
WARNING
DUAL CONTROLLER REDUNDANT SYSTEMS
: You
MUST
install at least 4 hard
drives. Hard drive slots 1, 2, 3 and 4 are system dedicated drives. If removed, they
MUST
be re-inserted in the exact same slots in the enclosure!
SINGLE CONTROLLER SYSTEMS
:
You
MUST
install at least 2 hard drives. Hard
drive slots 1 and 2 are system dedicated drives. If removed, they
MUST
be
re-inserted in the exact same slots in the enclosure!
2.2.1
Prerequisites
Enclosure hard drive slot sequences
: Tray numbering sequence is important
because if any faults occur to disk drives, you should be able to identify the location
of a faulty drive. If you mistakenly remove 2 drives from a RAID5 logical drive, data
will be lost.
Slot 1
Slot 2
Slot 3
Slot 4
Slot 5
Slot 6
Slot 7
Slot 8
Slot 9
Slot 10
Slot 11
Slot 12
Slot 13
Slot 14
Slot 15
Slot 16
System dedicated hard drives
: It is recommended for system dedicated hard
drives to be the same brand, capacity, rotational speed and model.
RAID Configuration
: Below is a list of the level of fault tolerance for different RAID
levels:
RAID Level
Max. No. of Failed Drives without Data Loss
0
No fault tolerance. 1 drive fails and the data is lost.
1
1 (mirrored pair)
5
1
6
2