On Sun, Apr 11, 2004 at 10:49:23PM -0500, Jeff Vian wrote: > Jay Daniels wrote: > > >On Sun, Apr 11, 2004 at 06:11:39PM +0200, Alexander Dalloz wrote: > > > > > >>Am So, den 11.04.2004 schrieb Jay Daniels um 17:09: > >> > >> > >> > >>>I have a scsi raid controller 2120S with 4 scsi ibm 320 scsi drives > >>>installed and working. The 2120S is the only raid card on the box and > >>>it also has a some type of hot swap card which all the drives are > >>>connected. > >>> > >>>So how do I connect my new scsi DAT tape drive to this box? Will I > >>>need another raid card to run the scsi DAT tape drive??? > >>> > >>> > >>I do not know the SCSI RAID controller. If it can independent from it's > >>RAID functionality - and that is an important fact too, if your SCSI DAT > >>tape drive is LVD too like the hard drives - be used for a single SCSI > >>device, then you can plug in the DAT drive too. If the controller is > >>only a RAID controller, or no separate SCSI connector is free, or your > >>DAT tape drive is not LVD and thus would switch down the whole SCSI bus > >>to non-LVD speed then it is need that you build in an own SCSI > >>controller card for the tape drive. Of course that card has not to be a > >>RAID controller too. Check which SCSI type the tape drive is and then > >>get a controller card serving that SCSI tape with an outside connector. > >> > >> > >> > >>>jay > >>> > >>> > >>Alexander > >> > >> > > > >It's a Seagate Scorpion 40 DDS-4 "internal" drive. > > > >The Scorpion 40 supports the following SCSI interfaces: > >68-pin Ultra 2 SCSI (LVD) > >68-pin SCSI Wide (single-ended) > >50-pin SCSI-2(requires 68- to 60-pin adaptor) > > > >I currently have my hard drives on an adaptec 2120S with hot swap > >card. The cable runs from the raid adaptor to the card. The 2120s > >card is a 64bit pci card. > > > >Also, I use scsi 5 raid array and don't know if that would require me > >to install the tape drive on another scsi adaptor. > > > > > According to the Adaptec site the 2120S is raid5 hardware controller, > ultra 320. > > You cannot attach a non-raid device such as a tape drive to this adapter. > > You will have to have an adapter appropriate for the tape drive to > connect it. > > >So is the 2120S considered an Ultra 2 SCSI (LVD)? Do I need to go > >into the adaptec setup of the 2120s to setup the tape drive? > > > > > No, and No. > > >I do not want to purchase another expensive scsi card if possible. The > >server will hold up to 7 320 scsi drives but currently I only have 4 > >and don't think I will add any more hotswap hard drives. > > > > > You have no choice. Hardware raid controllers do not support non-raid > devices. > > >I spent a lot of money for this tape drive and want the best > >performance! Oh, I also need a ribbon cable - no cable in the box, or > >do I really need a cable? The cable from the 2120s to the hot swap > >card is long and has extra connections! > > > > > > > You need to check the specifications on the tape drive. > Is it scsi2 UW or scsi2 UW fast. > > I suspect from the info you give and what I know of most DDS4 tape > drives it is scsi2 UW and not likely faster. > > If you want an inexpensive scsi adapter, an adaptec AHA2940UW or similar > would work well. > You will need a cable to attach to the drive, and if the drive/enclosure > is not self terminating you will also need a terminator for the end near > the tape drive. > All scsi buses must be terminated at both ends. The adapter will > usually be one end, the furthest device is the other end. > jeff Jeff, I have an old Adaptec AHA2940UW but I have only one more 32 bit pci slot and no AGP slot. I was hoping to use that slot to install a better video adaptor than the built in Rage XL. Good to know, Hardware raid controllers do not support non-raid storage devices. I had a feeling this was true since I called a Linux vendor years ago and the tech said that if I wanted a scsi scanner interface that I need to install another scsi adaptor for the scanner. jay
