On Wed 12 Jul, 2000, Jay Orr orrjl@stl.nexen.com wrote:

speed of max single max HVD length Max LVD length fastest device

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5 MHZ (Scsi1) 6M 25M 12M 10MHZ (S2 Fast) 3M 25M 12M 20MHZ (Ult. F20) 1.5M 25M 12M 40MHZ (Ult2 F40) <nr> 12M 12M

Those are closer to the numbers I was expecting people to come up with.

I'm supprised the F7**'s are HVD (didn't investigate it myself). Seems like HVD is going [slowly] by the wayside...

Well tape drives, like CDROM drives, are slow to match the trends that disks and SCSI-host-adapters set.

Even now you can usually feed two high-end tape drives (DLT, AIT, Exabyte) off one Fast, Wide SCSI bus.

HVD FW SCSI has been around and widely used for, oh, about 5-6 years I reckon, so it's well-proven, reliable, and R&D-amortised technology.

There's a hell of a lot of equipment in the world using HVD, at least I've come across a lot in server rooms and places where, until fibre and LVD came along, it was either HVD FW SCSI or something proprietary from IBM or DEC or you couldn't do the job at all.

Until fibre-attached tape drives start selling in higher volume than HVD FW SCSI I don't think I'd claim it to be falling by the wayside.

-- End of excerpt from Jay Orr