Re: 2120S Raid Controller and DAT Tape?

From: Jeff Vian (jvian10_at_charter.net)
Date: 04/12/04

  • Next message: Steven Stern: "Re: shell mail client.." 
    Date: Sun, 11 Apr 2004 22:49:23 -0500
To: For users of Fedora Core releases <fedora-list@redhat.com>

    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 

    -- 
fedora-list mailing list
fedora-list@redhat.com
To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list
  • Next message: Steven Stern: "Re: shell mail client.."

    Relevant Pages

    • Re: Adaptec AHD U320 operating as only U160
      ... With aic79xx_osm.c 1.30 all of my U320 drives are detected as such. ... > on Adaptec at U320 speeds, and I prey that they are harmless (as they ... Nope, no SES enclosure, just plain 68pin scsi drives. ...
      (freebsd-current)
    • Re: Useless hard disk RZ29B-W information - Jensen
      ... What is the SCSI ID ... You cannot have a SCSI bus with drives both inside ... These older enclosures tend to cook drives. ... The Adaptec firmware ROMs must be G.1. ...
      (comp.os.vms)
    • Re: AHA 2940UW and Quantum IV problem
      ... perhaps only UW since I bought it with my other Adaptec ... I guess round cable is for external drives, ... adapter bios. ... The SCSI cable has three connectors: ...
      (comp.periphs.scsi)
    • Re: New HDDs for older PC...
      ... I'm wanting to add more HDD space, ... Adaptec AIC-7890 SCSI: SCSI, UW SCSI, Ultra2 LVD/SE SCSI ... The SCSI drives, however, have been grinding away for nearly six years now and remain rock solid! ... motherboard, Adaptec 3400S RAID controller, DDS3 tape drive, and a bunch ...
      (alt.comp.hardware.pc-homebuilt)
    • Re: Useless hard disk RZ29B-W information - Jensen
      ... What is the SCSI ... The Adaptec is zero IIRC, and the drive is set to one. ... > to cook drives. ... > external SCSI termination, but every so often...) ...
      (comp.os.vms)