We are using 4 - ATL M1500 dual SDLT modular units with LVD SCSI interfaces.  We backup three filers via NDMP and about 40 W2K and UNIX servers via a NT media server using Reliaty backup software.  The adminhost is a Sun V120 that also manages the robotics.  Nice units as they are a scalable solution and can be stacked on-demand to increase capacity.  In the next phase of our implementation we intend to convert the SCSI interfaces to a fiber SAN interface (M1500 has swappable interfaces) to increase performance and flexibility.  Install was relatively painless (aside from a DOA unit with the wrong "mushware") and was up and running pretty quickly. 
-----Original Message-----
From: John Clear [mailto:jclear@ati.com]
Sent: Thursday, December 19, 2002 11:29 AM
To: 'Geoff Hardin'; Barry Lustig
Cc: toasters@mathworks.com
Subject: RE: Jukeboxes for filers

We have an ATL dual P4000 hybrid with 6 SDLT NDMP drives and 4 SDLT SCSI
drives, and are mostly happy with it (an ATL Field Engineer is onsite right
now dealing with a hardware issue :( ).

The NDMP drives speak gigabit, so the library isn't connected directly to the
filer at all, just via the network.  The NetApps just see the NDMP drives as a
remote device.  We previously had a <mumble> jukebox with DLT7000s connected
directly to the filers, and had a few occasions where we had to reboot a filer
to fix a hung drive.

The SCSI side is used for the other Unix/NT hosts.  Software is Legato Networker.

John

-----Original Message-----
From: Geoff Hardin [mailto:geoff.hardin@dalsemi.com]
Sent: Thursday, December 19, 2002 8:52 AM
To: Barry Lustig
Cc: toasters@mathworks.com
Subject: Re: Jukeboxes for filers


Barry,
   We use an ATL P3000 library with 16 DLT7000 drives.  We use
Workstation Solutions QuickRestore (now Reliaty Backup) to back
everything up.  We have 15 filers being backed up and the library is
starting to get overwhelmed.  We are considering the new SDLT drives,
since they are backwards read compatible with DLT.  It's been a great
solution for over two years now; only change I would have made would
have been to wait for the P3000 GbE library.