Simply cabling is not enough, you will have to ensure that the cables are
in good shape,including all pins & are terminated properly.
Using IBM drivers for IBM LTO would be desirable.
Thanks
sav2880 <networker-forum AT BACKUPCENTRAL DOT COM>
Sent by: EMC NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU>
01/22/2009 07:59 AM
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Subject
Cannot Label Tapes / Networker 7.4 SP4
1) The cabling for this is pretty simple. SCSI cable from the card to the
Overland and then terminated right there.
2) I have since the last post switched up the drivers to the native LSI
Logic ones off of their web site, I think they were updated back in June.
On the surface, it doesn't appear to have made a difference just yet.
3) Checking into this now.
4) ... and considering that the new SCSI card is not showing that error,
but nothing has changed, that would seem likely.
Next steps I will do is get that IBM driver installed, we'll see if it
helps, I'll report back here in a few minutes and let you know.
Matthew Huff wrote:
> A couple of things:
>
> 1) I hate scsi. Sometimes you have to sacrifice a chicken to make it
work reliably. Even if it's worked well for years. Make sure all your scsi
cables are seated correctly and tightened. I'd even disconnect and check
all the pins, and reconnect them. If you aren't using Granite Digital
cables and terminators. Go buy them. Now.
http://www.granitedigital.com/scsiproducts.aspx. I missed your earlier
post, how is the scsi cabled? What are each steps in the link?
>
> 2) Always use the native driver, not the default windows one. I've been
using Adaptec HBAs since the late '80s and there are good and bad things
about them, however most tape library vendors recommend them as the
default hba. Make sure you are using the latest drivers.
>
> 3) If you are using LTO tape, download and install IBM's LTO tape
driver. Read the instructions and especially the readme.txt
>
>
http://www-01.ibm.com/support/docview.wss?rs=543&context=STCVQ6R&dc=D430&uid=ssg1S4000189&loc=en_US&cs=utf-8&lang=en
>
> 4) I have seen the block size problem be a phantom error when the
underlying scsi system was having issues.
>
>
>
> -----Original Message-----
> From: EMC NetWorker discussion [mailto:NETWORKER < at >
LISTSERV.TEMPLE.EDU] On Behalf Of sav2880
> Sent: Thursday, January 22, 2009 8:08 AM
> To: NETWORKER < at > LISTSERV.TEMPLE.EDU
> Subject: [Networker] Cannot Label Tapes / Networker 7.4 SP4
>
> Fazil Saiyed wrote:
>
> > Hello,
> > Sounds like there are errors still undiagnosed in the system, start
with
> > HBA's, Typically, the block size should be 64 KB for Windows, the fact
> > that you are seeing error in that regards, may indicate some issue
with
> > writing the data to the tapes with optimal size, are the tape heads
clean
> > ?
> > Have you run diagnostics on the overland ? Confirm your block size and
> > tape parameters via MT or similar cmd.
> > Did you rule out any issues with the media or drivers ? are you
receiving
> > error on more then one media ?
> > HTH
> >
> >
>
>
> I'll try to answer these best I can ...
>
> 1) The tape heads were cleaned to begin the process, and I have cleaned
them once since. So, best I can tell, the heads are clean.
>
> 2) Have not run diagnostics specifically on the Overland, but I have
tried two separate Overland Powerloader LTO jukeboxes, both with the same
result. So, since I've tried a couple of different units, that was my
attempt to rule that out as a possible reason.
>
> 3) I am receiving the errors on multiple tapes. In fact, I recently took
out a few tapes that were empty that I had been attempting to use and
replaced them with newly opened tapes, and the result has been the same.
>
> This is one thing I have done that may be helping though ... last night,
I changed out the SCSI card for another one we had, a LSI Logic PCI-X
Ultra320 SCSI host adapter. Windows picked up on it right away, it appears
to be using a generic Microsoft driver (which is different than the
Adaptec, which was using a newer driver from 2007 off their site).
>
> When I attempted to re-run the tape label from the GUI, it did not take
the long period (30 minutes) to time out, it finished its efforts in about
2 minutes. The error I got then was a tape rewind error, saying that the
tape status was that the drive was ready.
>
> Additionally, when I ran scanner -vv \\.\Tape2, it did not show the
block error. It then (properly I think?) showed the default block size zt
32kb, and the maximum at 64kb.
>
> Not sure at this point, might be making progress on it, hard to say.
What settings in Networker should I be looking for at this point, should I
hard code the HBA size to 64kb or leave it at handler default?
>
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