LC2000, NetRaid 1si, RAID 10

[Tim Tanguay]

I have an LC2000 with 4 18GB drives which is currently set up without RAID, but I am going to convert to RAID 10 using a NetRaid 1si controller. All my drives were suppose to be identical, but looking at the output from a hardware inspection program I noticed the last drive is slightly different:
0: HP 18.2GB A 80-SA40SA40 (18.20 GB)
1: HP 18.2GB A 80-SA40SA40 (18.20 GB)
2: HP 18.2GB A 80-SA40SA40 (18.20 GB)
3: HP 18.2GB C 80-BX02BX02 (18.21 GB)

So the fourth actually has 18.21GB space as opposed to 18.20. Is this going to prevent me from having all these drives on the same RAID 10 array?

I'm planning to order 2 additional drives and configure as RAID 1 for OS with a split hotswap backplane for a second NetRaid 1si controller. Any other gotchas I should know about? I assume the 2 drives on the separate RAID 1 channel don't have to match these exactly.

[Theo Hill_1]

It shouldn't be a problem, but I wouldn't select it first in the array. It should just use 18.20 for each drive in the array.