RAID 10 with 5 drives?

J

jmroberts70

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Oct 15, 2002
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So I'm looking at the AMS DS-2350S eSATA 5 bay Aluminum Enclosure and I notice it will do RAID 10. Now my understanding of RAID 10 is that normally there are 4 drives with 2 pairs that are then paired together for a single volume. How would that work with >>5<< drives? In fact, can RAID 10 even work in an odd number of drives?
 
You need at least 4 drives for RAID 10 and they must be in pair (you expand the RAID 2 drives at a time).
 
You need an even number of drives. The reason why that enclosure has 5 bays is because most SATA port multipliers are 5 port.
 
On my server at work I setup Raid 10 using 4 of the drives, and used the remaining drive as a hot spare.

This way if I forget to notice the log alerts for a failed drive, I can still lose a second drive before all hell breaks loose :D
 
Very true.. luckily I also set it up to send an snmp trap to our alarm collector in case that happens (or I get fired..)
 
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