Chapter 7: Support
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For sustained data transfers – The FastTrak RAID 0+1 array consisting of
four HDDs will transfer at about twice the speed of the slowest HDD in the
array.
RAID 5 (Block and Parity Striping)
For capacity – The FastTrak RAID 5 array is the smallest drive size
multiplied by the number of drives, less one. The larger HDDs will be
truncated. The truncated space on the bigger HDDs will then be unusable.
For sustained data transfers – The FastTrak RAID 5 array will write data at
moderate speed but will read data very quickly. The fact that you can use 3
or 4 drives and the effect of parity calculations means defining speed in
terms of a single HDD is difficult and imprecise.
JBOD (Just a Bunch of Disks)
Technically, JBOD is not a RAID level but a collection of single disk drives.
The FastTrak SX4030, SX4060 and S150 SX4-M support up to four such
drives.
Drive Issues
Can I add a drive to a FastTrak SX4030, SX4060 and S150 SX4-M array via
hot-swap and dynamically adjust the array size/configuration?
No. The FastTrak Controller does not support dynamically adjustable RAID
size/configurations.
Do the HDDs on the FastTrak SX4030, SX4060 and S150 SX4-M have to be
the same size?
The HDDs that you use with the FastTrak SX4030, SX4060 and S150 SX4-
M do not have to be the same size. If the sizes differ, the FastTrak Controller
will truncate the bigger HDD so the drives match. The resulting difference in
HDD space is unusable, so avoid using HDDs of significantly different
capacities.
I already have an array on an older FastTrak controller. Can I move that
array to my new FastTrak SX4030, SX4060 and S150 SX4-M controller?
Yes. All FastTrak controllers read the arrays the same way and can be
moved from one controller to another.
