[HPADM] Partial Summary: Connecting an STK L80 to our exisiting HP - Co nnectrix - Symmetrix configuration.

From: Abramson, Stuart (SAbramson_at_Wabtec.com)
Date: 10/24/03

  • Next message: Johnson, Craig E: "[HPADM] RE: frecover help" 
    To: "'Sue Pellerito'" <Sue.Pellerito@jackinthebox.com>
Date: Fri, 24 Oct 2003 14:33:36 -0400

    Sue:

    I'm still analyzing results, but here is summary to date:

    1. EMC recommends that for all UNIX servers you seperate your tape and
    disk traffic on seperate HBAs. They will not help you troubleshoot problems
    on the path unless you seperate the traffic.

    2. Notwithstanding that, some people put both tape and disk traffic on
    the same HBA. You must have the right drivers in your kernel. There is a
    performance impact, and it's not recommended for PROD only Development.

    3. EMC ESN Manager will zone a tape connection just like it does a disk
    connection - WWN to WWN. No problem.

    4. Most tape drives have been FC-AL to date. Nobody could verify
    whether the new L80 is directly FC-SW (I could look it up on the STK web
    site, I guess.). If your L80 is FC-AL, then you need another switch, like a
    brocade, between your Connectrix and your L80 to convert FC-SW to FC-AL.

    5. If you have another brocade in front of your L80, then you don't
    need one connection to the brocade for every drive. You only need one
    connection for every drive from the brocade to the L80, plus one for the
    robot arm. You must then calculate the number of connections from the
    Connectrix to the Brocade based on throughput/concurrency. (I have some
    numbers, but not right in front of me.).

    I will summarize fully after I digest the response I got and verify on the
    STK web site.

            Stuart

    Stuart Abramson | Off: 412/825-1434 | Cell: 412/417-1567 | email:
    sabramson@wabtec.com

    -----Original Message-----
    From: Sue Pellerito [mailto:Sue.Pellerito@jackinthebox.com]
    Sent: Friday, October 24, 2003 2:11 PM
    To: Abramson, Stuart
    Subject: RE: [HPADM] Connecting an STK L80 to our exisiting HP -
    Connectri x - Symmetri x configuration.

    Hello. Our L80 is attached via scsi (each drive uses a scsi card--so we
    have 3 drives, 3scsi connections). I do remember Storage Tek talking about
    the fabric connection but at the time I didn't have 3 ports available on
    the brocade switch. I had assumed it would need 3 connections, like the
    scsi--one per drive. I don't really understand this method they are
    speaking of whereby you use the one HBA for both tape and disk? It would
    seem that the card would be a bottleneck especially at backup times. Did
    you learn anything else about this setup?

     

                          "Abramson,

                          Stuart" To: "'Sue Pellerito'"
    <Sue.Pellerito@jackinthebox.com>
                          <SAbramson@Wabtec cc:

                          .com> Subject: RE: [HPADM]
    Connecting an STK L80 to our exisiting HP - Connectri
                                                    x - Symmetri x
    configuration.
                          10/23/2003 05:41

                          AM

     

     

    Sue:

    Yes we are using backup software, Legato NetWorker. I was just wondering
    if
    the L80 really talked switched-fabric, and if I could configure both the
    tape and disk to the same HBA on the HP rp7410. The last place I worked
    wanted the HBAs to be seperated - HBAs for disk only and other HBAs for
    tape
    only. How do you do it?

      Stuart

    Stuart Abramson | Off: 412/825-1434 | Cell: 412/417-1567 | email:
    sabramson@wabtec.com

    -----Original Message-----
    From: Sue Pellerito [mailto:Sue.Pellerito@jackinthebox.com]
    Sent: Wednesday, October 22, 2003 4:40 PM
    To: Abramson, Stuart
    Subject: Re: [HPADM] Connecting an STK L80 to our exisiting HP -
    Connectrix - Symmetri x configuration.

    Very interesting. We have a L80 (SCSI) attached to an HP rp7400 which is
    defined to a brocade switch/Symm 8430. I thought you needed to get the
    backup software vendor involved in this type of backup (ours is Veritas)
    which involved yet more expensive software from their end. Maybe you just
    zone it using the HBA and EMC writes to it like a disk? Let me know what
    you find out.

                          "Abramson, Stuart"

                          <SAbramson@Wabtec.c To: "Hpux-Admin
    (E-mail)" <hpux-admin@DutchWorks.nl>
                          om> cc:

                          Sent by: Subject: [HPADM]
    Connecting an STK L80 to our exisiting HP - Connectrix -
                          hpux-admin-owner@Du Symmetri x
    configuration.
                          tchWorks.nl

                          10/22/2003 01:27 PM

    hpux-admins:

    We use ESN Manager to zone and add Volume Access to our HP 9000 UNIX
    Servers, Connectrix ED1032 switch, and EMC Symmetrix 8430.

    We are looking at an STK L80 Tape Silo (?).

    The STK salesman, who is actually a 3rd party VAR, tells us that the L80
    runs switched fabric and can be hooked up directly to the Connectrix and
    zoned like we zone our EMC today.

    I don't recall seeing any HP-UX server to EMC Connectrix to STK L80 options
    in ESN Mgr!

    How does one connect this up and use it?

    My previous experience with STK tape libraries is that they were FC-AL and
    ran on completely seperate HP-UX HBAs to completely seperate Brocade
    switches to the STK library. No mixing.

                 Stuart

    Stuart Abramson | Off: 412/825-1434 | Cell: 412/417-1567 | email:
    sabramson@wabtec.com

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