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Old 01-16-2008, 04:39 PM
DoN. Nichols
 
Posts: n/a
Default Re: HVD to LVD converter for X6541A

According to Yiannis <i.mavroukakis@btinternet.com>:
> On Aug 23, 3:21 am, dnich...@d-and-d.com (DoN. Nichols) wrote:
> > According to Yiannis <i.mavrouka...@btinternet.com>:
> >
> > > Hello

> >
> > > I've got an X6541A SCSI HVD board I'd like to use with an Ultra 10 I
> > > salvaged from a skip. The problem is I can't seem to find any HVD
> > > drives even in ebay. Is it possible to use an HVD to LVD converter and
> > > if so, which one would you recommend?


[ ... D1000 for external HVD drive box for LVD/SE drives ... ]

> Lovely idea, but I would like to keep this as self contained in the
> box as possible, so essentialy what I am looking is
> a compatible LVD controller for the Ultra 10..any suggestions?


If you want to keep it inside the computer, you don't *need*
LVD. Most LVD drives will happily work on Single Ended (SE) instead.
(The exception in my experience are the Exabyte LVD Mammoth-2 8mm tape
drives, which are *documented* by the maker to not be compatible with
SE.)

So -- connect to eBay and run a search for 375-0005 (A Symbios
SYM22801 card which plugs into the PCI bus, and can handle *two* SE
68-pin SCSI buses, either internal or external. The internal buses have
a choice of 68-pin or 50-pin for each, while the external connectors are
VHDCI 68-pin.

Now -- if you want to use the SCA drives (80-pin), you'll need
adaptor cards from SCA to standard 68-pin, but those are not too
expensive from places which sell SCSI stuff for the PC crowd.

And if you want to use 50-pin drives (now getting rather hard to
find) you can use the same controller -- but can handle only seven
drives (but since you want to put them internal to the Ultra-10, you are
unlikely to exceed that.)

Out of curiosity -- why do you want to hang internal SCSI drives
on an Ultra-10 anyway? I'm not sure whether it can push the PCI bus
fast enough to make full use of the drives anyway.

I've got one of those cards in an Ultra-60, and the brother card
(HVD) in a Sun Fire 280R, along with a LVD card (whose part number I
forget, and it is too new to be covered in my Field Engineer's
Handbook). The LVD card I'm using purely to talk to the Exabyte EXB-430
jukebox and two Mammoth-2 drives.

Good Luck,
DoN.
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