>Take a PC & install a minimal Linux or *BSD on it. >Install multiple IDE disks. >Run software RAID on it >Install a SCSI card in it. > >Now, connect via SCSI to another machine (that doesn't have IDE) & use >it as an external RAID system.
Well, as others have pointed out, using Target Mode is the way to go if you *insist* on doing it this way. However, I can tell you from personal professional experience, it ain't easy. What SCSI Host Bus Adapters are you planning to use and does their firmware "know" Target Mode? (Consider that a rhetorical question, BTW). How do you (plan to) turn on Target Mode support in your SCSI Driver or your HBA's device driver? (Assuming you know how, or it's documented...) >>> I also don't want the traffic to go across the net. What net? If you have dedicated Ethernet adapters on each system and use a crossover cable between them, it's not an issue. >>> SCSI is *much* faster then ethernet. I agree with Mark Komarinski's assessment. Running 100 Mbit/sec FDX should do the trick for you. Remember, you'll have some track/sector seek times, so it's unlikely, in a TP environment, that you'll max out the link for very long. And, since you're running a database, you want to make sure your data transfers are reliable. Running with hacked-up SCSI HBA firmware and device drivers is not, IMNSHO, commensurate with that... Just my 20 millidollars' worth, and the usual disclaimer about this not being my employer's opinion. Bayard ***************************************************************** To unsubscribe from this list, send mail to [EMAIL PROTECTED] with the text 'unsubscribe gnhlug' in the message body. *****************************************************************
