topic Re: DS2100 connection in Disk

DS2100 connection

Lacrosse — Wed, 19 Feb 2003 22:25:37 GMT

If I have 2 connections running from one dual port SCSI controller to the same DS2100 and the SCSI ID's on each interface on the card are the same, should I be Okay because the internal path is unique on each connection?? i.e. 10/40/7 and 10/41/7 (hypothetically) I know you can change them just wanted to know if that was correct

Re: DS2100 connection

Paul Sperry — Wed, 19 Feb 2003 22:39:06 GMT

You should be OK I have seen setups like yours
work fine.

Re: DS2100 connection

Steven E. Protter — Thu, 20 Feb 2003 00:30:56 GMT

There is nothing wrong with your setup. We have soemthing similar on our rp5450(L2000) servers at work.

SEP

Re: DS2100 connection

Brian M Rawlings — Fri, 21 Feb 2003 00:03:07 GMT

Um, guys? This won't work with a DS2100 chassis. This is the little 4-drive unit, with no "split bus" mode. This would work fine with a DS2300 14-drive unit, which offers a split-bus option.

Either go with two DS2100s, on two HBAs (for best HA), and mirror between the chassis, or use the DS2300 in split-bus mode for the HA mirroring function.

I suppose you could change the initiator ID from 7 to 6 on one port of the dual port card, and make this work (presuming that the IDs can be changed, which I believe they can). But you have a "BA" (barely available) solution. Single points of failure would be the card, the SCSI bus, and the chassis/power supplies/etc. Essentially, everything.

For best HA, use seperate SCSI cards, and seperate chassis, and mirror between the seperate SCSI domains.

Regards, --bmr