2120S Raid Controller and DAT Tape?
Jay Daniels
drs at pointyhats.com
Mon Apr 12 00:51:52 UTC 2004
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.
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?
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.
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!
jay
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