Thanks for the replies, but no luck yet.

The data being migrated all belonged to a single node, and only two
tape mounts were involved.

The drive firmware is up to date. I'll be damned if I can figure out
how to determine what the 3584 library firmware level is or how to
download it. The device driver (Atape) software is up to data as of a
month o\r so ago.

I've double-checked the zoning, and everything seems  as it should be
(server and disk in one zone and server and tape drives in another zone).

At 02:23 PM 10/20/2005, you wrote:

Another factor to consider: does the tape pool in question have
collocation turned on?  If so, then depending on the number of tapes in
the pool, the type of collocation in effect and the number of client nodes
or filespaces to be migrated, there could be a very large number of tape
mounts occurring.  With only two drives, and depending on the mount
retention period specified on the device class, I could believe that an
awful lot of that 10.5 hours might've been spent fiddling around with tape
mounts, idle drives, etc., and not actually writing data.

Regards,
Bill

Bill Kelly
Auburn University OIT
334-844-9917

> It also wouldn't hurt to verify that your library and drive code
> (firmware) are up-to-date.
>
> -----Original Message-----
> From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf 
Of
> Jim Skinner
> Sent: Thursday, October 20, 2005 11:36 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: [ADSM-L] TSM Performance with 3584 LTO-2 Drives
>
> I believe the first thing to check is the zoning of the fiber channel
> network. TSM server and disk in one zone and in a different zone put tsm
> server and tape.  We had a similar problem.
> >>> osborn AT RPI DOT EDU 10/20/05 11:22 AM >>>
> Hi,
>
> We're recently connected a 3584 with one L52 frame containing 2 LTO-2
> fiber attached drives to our AIX server. We'll be using FAStT SATA
> disk as a primary storage pool and migrating from disk to tape.  Can
> anyone with a  similar setup provide any statistics on how this works
> in the real world, i.e. MB/sec or GB/hour from disk to tape.
>
> A test migration of 259 GB (152422 files) took 10.5 hours to
> complete. This seems like abysmally slow performance, or is it
> reasonable with a large numbers of small files?
>
> TSM version: 5.3.1
>
> MoveBatchSize     500
> MoveSizeThresh    512
>
> AIX version: 5.1
>
> Chet Osborn
> Systems Programmer
> Rensselaer Polytechnic Institute
>
> Jim Skinner
> The University of Kansas Hospital
> Westwood Campus
> Information Technology Systems
> 2330 Shawnee Mission Parkway, Suite 201/068
> Westwood KS 66205-2005
> 913-588-4787
>
>
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