Unloading Autoloader Magazines

Dennis.W.Painter at certance.com Dennis.W.Painter at certance.com
Fri Mar 5 14:08:06 PST 2004


* From the T10 Reflector (t10 at t10.org), posted by:
* Dennis.W.Painter at certance.com
*

Yes, that is what we currently do. Typically the ISVs will  unload the tape
with a Move Medium command instead of Unload.

Tim Jones posted that HP's DAT autoloaders use byte five, bit seven of the
Load/Unload command to direct ejecting the magazine. (Control byte bits
seven and six are VU)

None of this is standard, the reason I posted in the first place. Since
it's being done it would be nice if it was standard.

Dennis Painter
Certance
dennis.painter at certance.com
714-641-2564



|---------+---------------------------->
|         |           Gerry.Houlder at sea|
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|         |           Sent by:         |
|         |           owner-t10 at t10.org|
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|         |           03/05/2004 11:31 |
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  |       To:       t10 at t10.org                                                                                  |
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  |       Subject:  RE: Unloading Autoloader Magazines                                                           |
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* From the T10 Reflector (t10 at t10.org), posted by:
* Gerry.Houlder at seagate.com
*

I had another silly question about your autoloader implementation. How do
you differentiate between unloading a tape and ejecting the entire
magazine? Is this by sending the Unload command to LUN 0 to unload a tape
and sending the command to LUN 1 to unload the entire magazine?




                      Dennis.W.Painter at c

                      ertance.com               To:
michael.banther at hp.com
                      Sent by:                  cc:       T10 at t10.org

                      owner-t10 at t10.org         Subject:  RE: Unloading
Autoloader Magazines
                      714-641-2564


                      03/05/2004 10:58

                      AM







* From the T10 Reflector (t10 at t10.org), posted by:
* Dennis.W.Painter at certance.com
*

Hi Michael,

Yes. Our DAT autoloader has a single SCSI port. LUN 0 is the tape drive and
LUN 1 is the media changer.

We have implemented magazine eject using the SSC Unload command directed to
LUN 1 (the media change) This is obviously not per standards hence my query
about adding some standard method of ejecting magazines via a SCSI command.

Dennis Painter
Certance
dennis.painter at certance.com
714-641-2564




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