We use Raid 10 whenever possible, and use at least 2 bus's on the controller and we always match up the raid 1 pairs on a 1 to 1 basis between the two channels, and only use enterprise drive.
yeah enterprise stuff is awesome, but how much does a 4tb SAS enterprise drive set you back, last I looked I can have 3 x 8tb desktop drives for the price of a single 4tb SAS (enterprise)'
how much is it costing per cam per day of storage, must be massive?
I've spoken to people in the industry who have seen even the most amazing resiliency fallen over, that and the google drive results were really interesting.
Historically enterprise drives have 1 to 16th power chance of a multi-bit failure. Video and NAS drives have a 1 to 15th, and desktop drives are 1 to 14th..... These numbers are the reasons that raid 5 rebuilds can fail.....
I don't think you can get large drives (4tb+) with an error rate better than 1 to 15th at the moment?
Wonder how long it'll take for SSD's to get past the $ per tb rate of rotational, that'll be good, I do wonder if you get the same amount of total data written per Tb on a SSD vs a Rotational though...
we played around with a SSD Dump drive for a VMS recently and it got killed quite fast, as opposed to the Raptors that just seem to keep on kicking forever.