3 Mar
2006
3 Mar
'06
8:46 a.m.
Saw an interesting discussion about CD-ROMs with MSCP SCSI (YES, a
CD-ROM ISO with XXDP would be truly awesome!) and this got me thinking
about my own UC07 controller - if I've understood correctly, this
controller does not support SCSI tape.
I don't really know anything about MSCP or the SCSI command set that CD
writers use - but could a CD-R(W) drive be used as a backup device?
I know it's bad style to do backups on CD-R, but bear with me :)
Also, now that I think about it, the perverse bugger that I am, could an
MSCP controller send an Audio CD Play/Next Track/etc. command to the
CD-ROM? Would be awesome to have a hifi controlled by the PDP-11. :)
TIA,
-toresbe
3 Mar
3 Mar
10 a.m.
Saw an interesting discussion about CD-ROMs with MSCP
SCSI (YES, a
CD-ROM ISO with XXDP would be truly awesome!) and this got me thinking
about my own UC07 controller - if I've understood correctly, this
controller does not support SCSI tape.
I don't really know anything about MSCP or the SCSI command set that CD
writers use - but could a CD-R(W) drive be used as a backup device?
I know it's bad style to do backups on CD-R, but bear with me :)
I don't see why not, but you'll have to write the software to control it.
You're also likely to find that it's very picky about what it will work
with. At least with my Viking QDT and UDT controllers I *think* 512-byte
blocks are a requirement, and I know they won't work with all 512-byte block
CD-ROM drives.
An easier sollution is to have the SCSI HD's in removable trays, and Have a
modern Unix box with the same type SCSI tray. Plug the PDP-11 disk into the
Unix box, and use 'dd' to image the disk. The resulting image can even be
used under SIMH.
Also, now that I think about it, the perverse bugger
that I am, could an
MSCP controller send an Audio CD Play/Next Track/etc. command to the
CD-ROM? Would be awesome to have a hifi controlled by the PDP-11. :)
No clue, but I rather doubt it.
Zane
10:21 a.m.
An easier sollution is to have the SCSI HD's in
removable trays, and Have
a
modern Unix box with the same type SCSI tray.
For what it's worth, I'm looking for ways to make 'single drive caddy
sockets' for DEC StorageWorks and Compaq Drv/Try module interconnects.
This for the neatness factor of being able to take a encapsuled storage
module and plug it in as a 1-off standard SCSI drive. Basically just an
adaptor that goes from proprietary connector to standard, without having
to take the drive back out of the container. If anybody has seen this done,
send a message.
(probably available somewhere for something like $475.00 Yuk.)
John A.
1:31 p.m.
For what it's worth, I'm looking for ways to
make 'single drive caddy
sockets' for DEC StorageWorks and Compaq Drv/Try module interconnects.
This for the neatness factor of being able to take a encapsuled storage
module and plug it in as a 1-off standard SCSI drive. Basically just an
adaptor that goes from proprietary connector to standard, without having
to take the drive back out of the container. If anybody has seen this done,
send a message.
(probably available somewhere for something like $475.00 Yuk.)
John A.
Let me see if I've got this right. You're wanting to take and plug a
Storage works SBB into an adapter that then lets you plug just that single
SBB into a SCSI chain?
I've not seen this done, and I'd be more than a little leary of attempting
it. Remember, that a standard storageworks shelf moves a sizeable amount of
air through the SBB's for cooling. This is why the newer 7200RPM drives
can't be used in a BA353, and why they can't be used in older BA350's
without the 2x fan upgrade.
Zane
11:32 a.m.
On 3/3/06, Tore S Bekkedal <toresbe at ifi.uio.no> wrote:
Saw an interesting discussion about CD-ROMs with MSCP
SCSI (YES, a
CD-ROM ISO with XXDP would be truly awesome!) and this got me thinking
about my own UC07 controller - if I've understood correctly, this
controller does not support SCSI tape.
I don't really know anything about MSCP or the SCSI command set that CD
writers use - but could a CD-R(W) drive be used as a backup device?
I know it's bad style to do backups on CD-R, but bear with me :)
Also, now that I think about it, the perverse bugger that I am, could an
MSCP controller send an Audio CD Play/Next Track/etc. command to the
CD-ROM? Would be awesome to have a hifi controlled by the PDP-11. :)
All of those are possible with my MSCP SCSI controller. It will not
support them when it is released; but since it will be open sourced
you can write those functions and burn them into the EPROM/EEPROM.
vax, 9000
TIA,
-toresbe
6869
days inactive
6869
days old
4 comments
4 participants
participants (4)
-
allain＠panix.com -
healyzh＠aracnet.com -
toresbe＠ifi.uio.no -
vax9000＠gmail.com