Hi, Terry et al.

On Mon, 13 Jan 1997 15:10:07 +1100, Terry Prime <[log in to unmask]> wrote:
|Is anyone able to give me information on the first generation dds drive C1511A?
|I am presently putting together a document requesting a hardware upgrade on
|our 3000/957 and while I am recommending a DDS-3 drive and have the stats
|for it:-
|
|High capacity: 24 GB with 2:1 compression, 12 GB native
|High performance: 2MB/s transfer rate with 2:1 data compression, 1MB native.
|
|I do not have the stats for what we presently have for a comparison.  I have
|not been able to find anything on the archives.  If someone can help with
|these it would be greatly appreciated.

The HP C1511A (and C1501A, it's internal cousin) are HP-IB DDS-1 (except
they don't support 90m tapes, but only 60m tapes) drives.  They do not do
hardware compression, so can not read tapes written on DDS-DC or DDS-2
drives which had the DCLZ compression firmware enabled, which is on by
default.  The drives read and write at 183K bytes per second, assuming the
no host or bus throughput problems.  You should be able to get real-world
rates of about 180K/second consistently on most systems.  The drive stores
1.3GB per 60m tape.
--
Jeff Woods
[log in to unmask] at Unison Software
[log in to unmask]   at home  [PGP key available here via finger]

"You don't have to explain something you never said."  --  Calvin Coolidge