rjv@iwtpm.ATT.COM (XMPF20-Verbiscer) (11/16/87)
The AT&T 3B2 SCSI Development Team is looking for comments, criticisms,
and suggestions on the SCSI peripherals and features of the AT&T 3B2
Computers. SCSI is supported on the 3B2/300/310/400/500/600 machines.
Available peripherals include:
XM/405S - A package containing 3 135 MB* (formatted) disks
and a SCSI controller.
XM/900S - A package containing 3 300 MB* (formatted) disks
and a SCSI controller.
DCM/4E - A package containing a SCSI to ESDI controller. It
is capable of controlling up to four DM/xxxE packages.
DM/147E - A package that contains 1 147 MB* (formatted) disk.
DM/300E - A package that contains 1 300 MB* (formatted) disk.
TM/60S - A package that contains 1 60 MB* QIC-24 format
Quarter Inch Cartridge tape drive with SCSI interface.
TM/120S - A package that contains 1 120 MB* QIC-24 compatible
Quarter Inch Cartridge tape drive with SCSI interface.
3B2 9-Track - A package containing a 1600/6250 bpi, 75 ips 9-track
tape drive with SCSI interface.
* - MB is defined as 2^20 bytes.
In addition, the 3B2/500 is equipped with a SCSI interface, providing
access to an internally equipped 60 MB SCSI Quarter Inch Cartridge tape
and 1 147 MB disk. The 3B2/600 is also equipped with a SCSI interface,
providing access to the cartridge tape and 2 147 MB disks.
The disk products (except for the XM/405S) offer 18 msec average seek
times. The 120 MB cartridge tape is capable of reading tapes written
with the 60 MB product. The 9-track is of course compatible with
industry standard 9-track tape products.
We are interested in any problem you may have with the equipment and how
the problem was resolved. (Any comments on problems should include as much
detail on system configuration as possible, including the UNIX(R) Operating
System version.) Comments are also solicited on the 3B2/500 and 3B2/600
computers, which use SCSI as the mass storage system bus.
We are interested in hearing of the applications you run in which you
need the capabilities of SCSI, how well SCSI meets your needs, and if
the performance and functionality were as expected. Also, what new
features/peripherals would you like to see provided in future releases
and how would they help you.
We are also interested in comments on how knowledgeable the sales staff was,
how long it took to get the equipment once it was ordered, and how easy it was
to install.
There is little we can offer directly in return. We cannot usurp the
role of the support organizations to directly solve any problems.
We cannot comment at all on future products or features, unless you work
for AT&T, (and even then you'll need a good reason to know.) We may be
able to respond to general questions on what was done, and perhaps why it
was done, in our implementation.
However, we can promise that all comments will be carefully considered
as input to future releases of the SCSI products, and this will hopefully
make upgrades to your system function better for you.
Please email any comments directly to:
ihnp4!iwtio!rjv
Thanks,
The 3B2 SCSI Development Team