Raid 10 Questions

Jan Bernard Payumo

Honorable
Jun 16, 2013
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10,530
When setting up Raid 10, am i able to choose which drives are raid 1 and 0? If so, does that mean it will only read from the parallel drives, and then constantly back up the data to the mirrored drives? Is this how Raid 10 works?

Also, if the Mirrored drives are not going to be in constant read writes (will only be used when backing up the data) is it ideal to use WD Green? And then for the Parallel drives, i could use WD Red?

Lastly, i've read that Raid 10 can only sustain up to 1 disk failure for each sub-array. Does this mean that the Raid system will fail if both parallel drives and a mirrored drive fail? I still have all the same data on the last remaining drive, right?

**Update, One more question. Does it make sense to use two 4TB mirrored drives and two 2TB parallel drives for Raid 10?
 
-If one drive fails in Raid, you loose everything on all drives, so it is best if you have and external HDD for backing up your data.

-Just have two 4TB Mirrored drives

-Don't get what you are on about in the first sentence, you can't choose between RAID 1 or 0 as it is in RAID 10.

-The read/write of both drives aren't going to be consistent, but going for a WD Green is slow, they are for raw storage and not really that fast of a HDD, they have slower Read/writes to the blue/black drives by WD.