> 1.  The model number on the drive says "C1537-00260", but the
> manual that I downloaded from HP that *seems* to be for the
> same drive says "Model A3542A."  What gives?

In tireless pursuit of confusion maximization, HP consistently assigns
one part number to the bare drive mechanism, and a completely
different number to the assembled unit of a mechanism in an enclosure
with power supply, connectors, etc.

> 2.  How much faster (roughly) is this drive than the C1503
> DDS-1 drive that it is replacing?  Hardware compression is off.

Rated throughput (sustained transfer rate for uncompressed data):
  DDS (a.k.a. DDS1):   11 Megabytes/minute
  DDS2:                22
  DDS3:                60
  DLT2000:             72 Megabytes/minute, 1.2 Megabytes/sec
  DLT4000:             1.5 Megabytes/sec
  DLT7000:             5
  DLT8000:             6
  AIT                  3
  AIT-2:               6
  Exabyte Mammoth 8mm: 3

You'll frequently find that the higher-speed drives can accept data
faster than your system can deliver it.


Steve Dirickson   WestWin Consulting
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