Thread View: comp.arch.storage
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2 total messages
Started by John M. Sullivan
Tue, 19 Mar 1996 20:50
Any DAT Drives Support SCSI Copy?
Author: John M. Sullivan
Date: Tue, 19 Mar 1996 20:50
Date: Tue, 19 Mar 1996 20:50
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We developed an embedded system application that, for performance reasons, depends on the tape drive supporting the SCSI COPY (18h) command for disk<->tape xfer. We had been using WangDAT 3100/3200 DAT drives but, effective with their firmware load 3.0, they no longer support the COPY command. They apparently made this change without notice, leaving OEMs like us in a bit of a bind. Unfortunately, it is beginning to look like nobody else supports COPY either. Is anyone aware of a drive that supports the SCSI COPY command? Thanks. John Sullivan ELECTRONOLOGY, INC. sullivan@einc.com
Re: Any DAT Drives Support SCSI Copy?
Author: Dave Olson
Date: Wed, 20 Mar 1996 07:31
Date: Wed, 20 Mar 1996 07:31
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"John M. Sullivan" <sullivan@einc.com> writes: | We developed an embedded system application that, for performance reasons, depends on the | tape drive supporting the SCSI COPY (18h) command for disk<->tape xfer. We had been using | WangDAT 3100/3200 DAT drives but, effective with their firmware load 3.0, they no longer | support the COPY command. They apparently made this change without notice, leaving OEMs like | us in a bit of a bind. Unfortunately, it is beginning to look like nobody else supports | COPY either. | | Is anyone aware of a drive that supports the SCSI COPY command? Thanks. Almost universally, the disk and tape drive vendors are dropping this, since it was always problematic, and very few customers ever wanted it in the first place. Good luck... As slow as DAT drives are, I have trouble seeing this as being a performance bottleneck, unless you have no dma or hardware support in your system. -- Dave Olson, Silicon Graphics Guru and busybody at large http://reality.sgi.com/olson olson@sgi.com
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