🚀 go-pugleaf

In article <795@ns-mx.uiowa.edu> jnford@jay.weeg.uiowa.edu (Jay Ford) writes:
>
>
>Could somebody send me an address for Adaptec?  They aren't in any phone book
>around here, not even the AT&T 800 directory.
>

From tha back of the docu-book which adaptec supplies:
691 South milpitas blvd.
milpitas, ca 95035
(408) 945-8600

>Also, are the Wren drives internal (in the RT disk bays) or external (separate
>cabinet)?  Is it necessary to retain at least one ESDI-type drive for booting?
>

Yes, the Wren SCSI disks are internal (they are standard form factor).
Yes, you need one esdi disk to boot and swap from. Although it should
be possible to swap from a scsi disk, it isn't working at the moment.

>I have some pending calls for info on Wren & HP drives, but in case they don't
>pan out I'd appreciate some info on the various drives: capacity (formatted),
>speed (seek, transfer rate, etc), etc.  Comments on service arrangements would
>also be appreciated: cost, responsiveness, turn-around time, etc.


The Wren VII formats to ->
/dev/xt0d     786186       4  707562     0%    /mnt4
/dev/xt0a     193865   78381   96097    45%    /mnt3
             =980051 M
The Wren VI formats to about 600M as I recall. As for speed, the Wren
VI gets slightly better throughput than the Wren VII, but the Wren VII
does much better than ESDI disks. There is also a Wren V SCSI, as I
recall it is in the range of 450M formatted, but I may be wrong.

For example, I have observed about 400k/sec read performance with a
Wren V running off of a (HESDI I think). The last time I looked, I was
getting about 800k/sec read performance from a Wren VII.

HP has announced a 1.6G disk which supposedly has a 150000 MTBF rate
and a five year warranty, but they aren't being delivered yet.
Seagate/Imprimis is also talking about bigger and better disks (the
Wren VIII) 

Bill


-- 
arpa: moran-william@cs.yale.edu or wlm@ibm.com
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