🚀 go-pugleaf

Let me just add that Christer's Adaptec driver is *the* answer
for anyone who needs more disk space.  I'm running a Newbury Data 4380S (300mb)
and a Wren VI (600+ mb) off the Adaptec controller.  Works like
a charm.

High capacity SCSI disks are cheap and seem to be getting cheaper
by the week.  I purchased the Wren VI last week from Arrow Electronics
for $2300.

-- 
Steve Dyer
dyer@ursa-major.spdcc.com aka {ima,harvard,rayssd,linus,m2c}!spdcc!dyer
dyer@arktouros.mit.edu, dyer@hstbme.mit.edu

In article <725@vice2utc.chalmers.se> bernerus@utcrt2.utc.chalmers.se (Christer Bernerus) writes:

Chris> Many of you try to connect 3:rd party disks to the RT, many seems to
Chris> have trouble.
Chris> There seems to be a rumor seeping out that there is a PD SCSI driver available,
Chris> and, in fact the rumor is true. We started using RT's for AFS file servers two
Chris> years ago. When our disk space ran out we didn't want to buy more IBM
Chris> 9332's so we 
Chris> someone bought a pile of Maxtor XT4380S's for me. They just happened to be
Chris> single-ended SCSI and not diffrential as IBM's adapter was. Also,
Chris> someone bought
Chris> a SCSI streamer tape. The same week that Adaptec salesperson went by and .....

Chris> The driver can be ftp'd from wasp.ctp.se.ibm.com. Look in pub/ibm43/scsi.tar.Z.

Sounds good to me, but I get `unkown host' when I try to FTP to
wasp.ctp.se.ibm.com.  Does anyone have the IP address for this host?  Or is
there another FTP location for this driver?



--
Dan Ehrlich <ehrlich@cs.psu.edu>
Voice: +1 814 863 1142	FAX: +1 814 865 3176

Let me just "third" the note about the SCSI driver; it works great.
Just think, if you take the flopper out of a floor model, you could
run with 1x Wren V (ESDI) and 3x Wren VII (SCSI) giving 4Gb
unformatted. 

Oh, Wren VIIs work just fine as do Wren VIs.
-- 
arpa: moran-william@cs.yale.edu or wlm@ibm.com
uucp: uunet!bywater!acheron!archet!wlm or decvax!yale!moran-william
-------------------------------------------------------------------------------
	...the trouble with an alarm clock is that what seems sensible when
you set it seems absurd when it goes off.
			Archie Goodwin 

In article <Ex*3u81@cs.psu.edu> ehrlich@cs.psu.edu (Daniel Ehrlich) writes:
=In article <725@vice2utc.chalmers.se> bernerus@utcrt2.utc.chalmers.se (Christer Bernerus) writes:
=
=Chris> Many of you try to connect 3:rd party disks to the RT, many seems to
=Chris> have trouble.
=Chris> There seems to be a rumor seeping out that there is a PD SCSI driver available,
=Chris> and, in fact the rumor is true. We started using RT's for AFS file servers two
=Chris> years ago. When our disk space ran out we didn't want to buy more IBM
=Chris> 9332's so we 
=Chris> someone bought a pile of Maxtor XT4380S's for me. They just happened to be
=Chris> single-ended SCSI and not diffrential as IBM's adapter was. Also,
=Chris> someone bought
=Chris> a SCSI streamer tape. The same week that Adaptec salesperson went by and .....
=
=Chris> The driver can be ftp'd from wasp.ctp.se.ibm.com. Look in pub/ibm43/scsi.tar.Z.
=
=Sounds good to me, but I get `unkown host' when I try to FTP to
=wasp.ctp.se.ibm.com.  Does anyone have the IP address for this host?  Or is
=there another FTP location for this driver?
=

There is now. This handy little package is now available from
bikini.cis.ufl.edu in the directory ibm-rt-fixes. 

Ej

In article <1880@ursa-major.SPDCC.COM>, dyer@spdcc.COM (Steve Dyer) writes:
> Let me just add that Christer's Adaptec driver is *the* answer
> for anyone who needs more disk space.  I'm running a Newbury Data
4380S (300mb)
> and a Wren VI (600+ mb) off the Adaptec controller.  Works like
> a charm.
> 
> High capacity SCSI disks are cheap and seem to be getting cheaper
> by the week.  I purchased the Wren VI last week from Arrow Electronics
> for $2300.

Could somebody send me an address for Adaptec?  They aren't in any phone book
around here, not even the AT&T 800 directory.

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?

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.


Jay Ford,  Weeg Computing Center,  University of Iowa,  Iowa City,  IA  52242
jnford@jay.weeg.uiowa.edu  or  jnfordpb@uiamvs.bitnet,  319-335-5555

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
uucp: uunet!bywater!acheron!archet!wlm or decvax!yale!moran-william
-------------------------------------------------------------------------------
"Every man has his weakness." Pause. "Mine," added Doc, "is bestiality
and Baskin-Robbins girls."
		The Monkey Wrench Gang - Edward Abbey