![background image](http://html.mh-extra.com/html/promise-technology/vess-a3120/vess-a3120_quick-start-manual_1617253019.webp)
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The table below shows the number of drives required for each RAID level
Level
Number of drives
Level
Number of drives
RAID 0
1 to 4
RAID 3
3 to 4
RAID 1
2 only
RAID 5
3 to 4
RAID 1E
2 to 4
RAID 6
4
RAID 10
4
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rIve
s
lot
n
umberIng
You can install any suitable disk drive into any slot in the enclosure. The diagram be
-
low shows how drive slots are numbered on the Vess A3120.
Slot numbering is reflected in the web manager GUI and CLI/CLU user interfaces.
Drive slot numbering for Vess A3120
HDD1
HDD2
HDD3
HDD4
Promise Technology
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Quick Installation Guide