EonNAS Pro Series Hardware Manual
Drive Tray Numbering Sequence
2x0 5x0
8x0
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. Below is a list of the level of
fault tolerance for different RAID levels:
RAID Level
Minimum disk
requirement
Max. No. of Failed Drives without Data Loss
Non-RAID
1
No fault tolerance. 1 drive fails and the data is lost.
0 2
No fault tolerance. 1 drive fails and the data is lost.
1 2
1 (mirrored pair)
5 3
1
6 4
2
Recognizing drive location is important. For example, if you mistakenly remove 2
drives from a RAID5 logical drive, data will be lost.
For detail RAID configuration methods, please refer to the Web Interface Manual.
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