I was going to wait until we tried some of these but now that someone
else has asked I'll push thru the raw data I'm working with for
everyone's benefit:
In the first place, DSP3105 is a Digital Systems Products (as in DEC)
disk. I don't know who actually manufactures it, apparently it is
being re-sold under various labels.
The DSP3105 is a 3.5", 1.05GB (formatted) disk. There is another
model, the DSP3085, which is a 3.5" 852MB (formatted disk.) For both
models, average seek is 9.5ms, transfer rate to/from media is 2.6MB/s,
transfer to/from bus (synchronous) is 5.0MB/s (normal), 10MB/s (fast
mode), 5363RPM. This is all from their little handbook.
Now the format info and other responses:
________________________________________________________________________
From: Arthur Young <arth@bcl.co.nz>
>I ahve installed this onto a number of Sun's. Put the following into
>the appropriate places in the format.dat entry:
>
>Number of tracks 14
>Number of Data Cylinders 2568
>Number of Alternate Cyl 2
>NUmber of physical Cyl 2570
>Sectors per track 57
>
>Partitions Starting Cyl No. of Blocks No of Cylindrs
>"a" 0 191520 240
> "b" 240 319200 400
> "c" 0 2049264 2568
> "g" 640 1538544 1928
________________________________________________________________________
This sounds like a DEC DSP3105. The half-dozen or so that I have all seem
to have the following properties (some are running on Suns, some on VMS
VAXen):
disk_type = "DEC DSP3105" \
: ctlr = MD21 : fmt_time = 4 \
: cache = 0x11 : trks_zone = 1 : asect = 1 \
: ncyl = 2568 : acyl = 2 : pcyl = 2570 : nhead = 14 : nsect = 57 \
: rpm = 3600 : bpt = 46296
This gives a total of 2049264 blocks, or 0.977GB or 1.049GB if you count
GB as 1000 ^ 3 bytes.
Scott Allendorf
________________________________________________________________________
From: uunet!bmskc!oz!paul (Paul Evan Matz)
These are the entries we
got from Artecon when we bought the disk:
disk_type = "DEC DSP3105" \
: ctlr = MD21 : fmt_time = 13 \
: ncyl = 2564 : acyl = 2 : pcyl = 2570 : nhead = 14 : nsect = 57 \
: rpm = 5363 : bpt = 29184
partition = "DEC DSP3105" \
: disk = "DEC DSP3105" : ctlr = MD21 \
: c = 0, 2046072
The little sucker is really quite fast, and so small too!
________________________________________________________________________
...and they all lived happily after.
-Barry Shein
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