RAID 4Si PCI 4 Port controller

[Lacrosse]

Is the DS2100 compatable with the RAID 4Si PCI 4 port controller allowing the DS2100 hardware raid functionality, also if anyone has done this are there any gottcha's
BTW thanks for all the UT support

[Brian M Rawlings]

Yes, theoretically the 4Si card will run any JBOD UltraSCSI storage, and RAID protect it however you like (provided you have enough drives to do the RAID).

Having said that, the DS2100 is a cost-effective unit for this purpose, but you would actually want two or more DS2100s to truely utilize the benefits of the four UltraSCSI ports on the 4Si.

Depending on how many drives you need (subtracting the RAID parity drive space), you could put one DS2100 per channel (16 total drives, less those used for parity), or just two or three chassis.

You need to put the DS2100 in single-bus mode to do this, rather than try to split them between two busses, since (unlike the SC10) there is an issue with both controllers/channels using SCSI ID 7, and the bus won't work. I haven't done it myself to explain it better, this is just what I recall.

If you only connect one chassis, you won't get as much throughput, and you'll have more Single Points Of Failure (card, cable, chassis, P/S, all can take you down).

Have Fun! --bmr

http://www.hp.com/products1/storage/products/disk_arrays/disksystems/ds2100/overview/index.html