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Re: TSM, Solaris and Fibre connected drives ?
2004-03-31 13:00:16
We are going through two IBM2109 switches, with each drive attached to both
switches for failover purposes. You still need to add the drives to the
appropriate zones using the wwn's. I'm not really aware of any good
documentation that covers this, but if you find something please pass it over.
Once you've configured the zones, you should be able to issue: cfgadm -al and
you'll see output similar to this:
c2::5005076300406311 tape connected configured failing
c2::5005076300406657 tape connected configured failing
c2::5005076300406687 tape connected configured failing
c2::5005076300406ae8 tape connected configured failing
c2::50050763004072a8 tape connected configured failing
c2::5005076300806311 tape connected configured failing
c2::5005076300806657 tape connected configured failing
c2::5005076300806687 tape connected configured failing
c2::5005076300806ae8 tape connected configured failing
c2::50050763008072a8 tape connected configured failing
This is non-operational so the tape devices are in a "failing" condition
currently. After the c2:: entry you can see the wwn's for each tape drive.
Tying those back to the st entries is a little more difficult. One way to
determine which is which (at least in 5.2.2.1) is to define the drives using
the "st" entry and define a path to the drive. Once you've done that, the wwn
for the drive will be displayed in q dr f=d:
Library Name: 3494
Drive Name: 10H1A
Device Type: 3590
On-Line: Yes
Read Formats: 3590H-C,3590H-B,3590E-C,3590E-B,3
3590C,3590B
Write Formats: 3590H-C,3590H-B
Element:
Drive State: EMPTY
Allocated to:
WWN: 5005076300006311
Serial Number: 0000000A1357
Last Update by (administrator): LDAHL
Last Update Date/Time: 03/12/04 10:52:59
and if you issue q path f=d:
Source Name: TSM05
Source Type: SERVER
Destination Name: 10H1A
Destination Type: DRIVE
Library: 3494
Node Name:
Device: /dev/rmt/10st
External Manager:
LUN:
Initiator: 0
Directory:
On-Line: Yes
Last Update by (administrator): LDAHL
You can then correlate that /dev/rmt/10st corresponds to the drive with WWN:
5005076300006311. It's not the most straightforward but it works. I believe
one of my system administrators may have developed a workaround and I'll check
with him when he gets back (he's in a training class). Hope this helps. One
last note, it appears that every time the system is rebooted it creates new
/dev/rmt entries. This is extremely bothersome being it keeps adding the
entries with a higher numerical number. Not sure if we're doing something
wrong on that issue yet. Still working out the bugs...
Luke
818-354-7117
Farren Minns wrote:
> Was that going through a switch or are the fibre drives directly connected?
> The reason I ask is that I'm unsure how the OS picks up the new devices
> through a switch. We have a SAN, and I'm used to the fact that you have to
> tell the SAN which LUNS are available to which host (using the WWN), but as
> far as I'm aware, you don't do any such thing with drives.
>
> Do you know of any decent TSM documentation that covers this at all?
>
> Thanks
>
> Farren
> |+-------------------------------+----------------------------------------|
> || Luke Dahl | |
> || <ldahl AT JPL.NASA DOT GOV> |
> |
> || Sent by: "ADSM: Dist Stor | To: ADSM-L AT VM.MARIST DOT EDU
> |
> || Manager" | cc: |
> || <ADSM-L AT VM.MARIST DOT EDU> | Subject: Re: TSM,
> |
> || | Solaris and Fibre connected drives ? |
> || 03/29/2004 05:41 PM | |
> || Please respond to "ADSM: | |
> || Dist Stor Manager" | |
> || | |
> |+-------------------------------+----------------------------------------|
>
> We're doing exactly the same thing now only we're on TSM 5.2.2.1. Just
> finished some preliminary testing. TSM still uses the /dev/rmt/*st entries
> for
> the drives. There are two "st" entries for each drive being they have two
> fiber ports. We had some issues with our fiber cards not supporting the
> drives
> - we went from Qlogic to Emulex and don't have any issues now. Other than
> that
> it was pretty straightforward. Once you have defined a drive and a path,
> you
> can see the wwn and trace that back to the drive to come up with a matrix
> so
> you know which "st" entry belongs to each drive.
>
> Luke
>
> Farren Minns wrote:
>
> > Hi TSMers
> >
> > Running TSM 5.1.6.2 on a Sun E250 presently connected to 3494 lib with 2
> > SCSI 3590 drives (H1A).
> >
> > I have a question for you.
> >
> > We will soon be changing the SCSI attached drives for fibre attached
> models
> > (still going to be 3590 H1A in the 3494 lib) which will be connected to a
> > Brocade switch. Now, I have very little experience with fibre drives and
> > was wondering what the steps were both with Solaris (if anybody can help)
> > and TSM. I am used to adding SCSI devices to Solaris and then using the
> > /dev/rmt/??? format to define the drives to TSM, but I'm assuming this is
> > total different with fibre drives. I am assuming that the World Wide Name
> > convention will be used somewhere.
> >
> > Can anyone give me any advice or good documentation pointers etc.
> >
> > Many thanks in advance
> >
> > Farren Minns - John Wiley & Sons Ltd
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