Re: 2120S Raid Controller and DAT Tape?

From: Jay Daniels (drs_at_pointyhats.com)
Date: 04/12/04

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    Date: Sun, 11 Apr 2004 20:51:52 -0400
To: For users of Fedora Core releases <fedora-list@redhat.com>

    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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