Very Computer

by **bolt throwe** » Mon, 03 Mar 2003 13:48:08

Looking at picking up a 711 Multipack 12-bay... And wondering about
gotchas. I am planning on using it with an SS20 + F/W SCSI card. I
am wondering two main things:

- I've read (don't know where) that there is something special about
using 12 disks, and that some systems only see 6. Is this because it
uses SCSI IDs 8 and up? Shouldn't be a problem on a wide bus, right?

- Are the disks hot-swappable? Not in the sense that Solaris would be
aware of it, but if I had /foo mounted on, say, disk 3, could I
unmount it, pull the drive, replace it, and remount /foo without
killing anthing?

- The box has some serious fan power. Still, I am hoping on using
some older 18/36gb disks with some newer ones. Will heat be an issue,
at all?

Thanks very much.

--

by **Robert Esc** » Tue, 04 Mar 2003 00:40:46

On Sun, 2 Mar 2003 04:48:08 +0000 (UTC), bolt thrower

>Looking at picking up a 711 Multipack 12-bay... And wondering about
>gotchas. I am planning on using it with an SS20 + F/W SCSI card. I
>am wondering two main things:

>- I've read (don't know where) that there is something special about
>using 12 disks, and that some systems only see 6. Is this because it
>uses SCSI IDs 8 and up? Shouldn't be a problem on a wide bus, right?

>- Are the disks hot-swappable? Not in the sense that Solaris would be
>aware of it, but if I had /foo mounted on, say, disk 3, could I
>unmount it, pull the drive, replace it, and remount /foo without
>killing anthing?

>- The box has some serious fan power. Still, I am hoping on using
>some older 18/36gb disks with some newer ones. Will heat be an issue,
>at all?

>Thanks very much.

>--

I just picked up a 12 drive Multipack off of eBay and although I do
not have it filled (8 drives, a mix of 9 GB IBM DPSS-309170 U160 and
IBM 2.1 GB disks). Heat is not much of an issue at least with my
configuration. Solaris Volume Manager (Solaris 9) picks up new disks
with no problems, I do not know about hot swap capabilities.

The only "gotchas" that I am aware of is the use of termination on a
Sparc 5/10/20, Ultra 1/2. I am using mine on an Ultra 30 and it
automatically terminates.

Hope this helps.

Robert Escue
System Administrator

by **Rich Tee** » Tue, 04 Mar 2003 06:22:35

> Looking at picking up a 711 Multipack 12-bay... And wondering about
> gotchas. I am planning on using it with an SS20 + F/W SCSI card. I
> am wondering two main things:

The only gotcha I can think of off the top of my head is that
the 12 way 711s are rated for Ultra SCSI. On an SS20, that
won't matter, but it might be an issue if you upgrade to a
newer machine.

Quote:> - The box has some serious fan power. Still, I am hoping on using
> some older 18/36gb disks with some newer ones. Will heat be an issue,
> at all?

I don't think it'll be an issue, especially if you don't
fill the whole thing up with those older disks. Have a
look at the specs of the drives you're planning to use
and the specs of the drives supported in that box, and
compare the power requirements.

--
Rich Teer

President,
Rite Online Inc.

Voice: +1 (250) 979-1638
URL: http://www.rite-online.net

by **Michael Jank** » Tue, 04 Mar 2003 10:00:04

> Looking at picking up a 711 Multipack 12-bay... And wondering about
> gotchas. I am planning on using it with an SS20 + F/W SCSI card. I
> am wondering two main things:

> - I've read (don't know where) that there is something special about
> using 12 disks, and that some systems only see 6. Is this because it
> uses SCSI IDs 8 and up? Shouldn't be a problem on a wide bus, right?

> - Are the disks hot-swappable? Not in the sense that Solaris would be
> aware of it, but if I had /foo mounted on, say, disk 3, could I
> unmount it, pull the drive, replace it, and remount /foo without
> killing anthing?

I've been hot swapping them for years & they don't smoke or shoot out
sparks & they disks mount fine, so I'd assume they are hot-swap.

Quote:> - The box has some serious fan power. Still, I am hoping on using
> some older 18/36gb disks with some newer ones. Will heat be an issue,
> at all?

> Thanks very much.

--Mikw

by **bolt throwe** » Tue, 04 Mar 2003 11:56:11

: Looking at picking up a 711 Multipack 12-bay... And wondering about
: gotchas. I am planning on using it with an SS20 + F/W SCSI card. I
: am wondering two main things:

Hey, thanks for the answers guys. That's just what I needed to know.

by **Akop Pogosia** » Tue, 04 Mar 2003 16:49:37

>> Looking at picking up a 711 Multipack 12-bay... And wondering about
>> gotchas. I am planning on using it with an SS20 + F/W SCSI card. I
>> am wondering two main things:
> The only gotcha I can think of off the top of my head is that
> the 12 way 711s are rated for Ultra SCSI. On an SS20, that
> won't matter, but it might be an issue if you upgrade to a
> newer machine.

No, they are not rated UltraSCSI, or at least not when they're loaded
with 12 drives. None of Sun's single-ended UltraSCSI cards (either
on-board or PCI) is rated to support more than seven devices on a SCSI
chain of up to 1.5 meters long or more than four devices on a SCSI of
up to 3 meters long.

-akop

by **Akop Pogosia** » Tue, 04 Mar 2003 20:27:36

>>> Looking at picking up a 711 Multipack 12-bay... And wondering about
>>> gotchas. I am planning on using it with an SS20 + F/W SCSI card. I
>>> am wondering two main things:
>> The only gotcha I can think of off the top of my head is that
>> the 12 way 711s are rated for Ultra SCSI. On an SS20, that
>> won't matter, but it might be an issue if you upgrade to a
>> newer machine.
> No, they are not rated UltraSCSI, or at least not when they're loaded
> with 12 drives. None of Sun's single-ended UltraSCSI cards (either
> on-board or PCI) is rated to support more than seven devices on a SCSI
> chain of up to 1.5 meters long or more than four devices on a SCSI of
> up to 3 meters long.

I should have added, "to run in ultra SCSI mode"..

Of course, you can add more disks and make the chain longer than
recommended but it might just switch its mode of operation to
Fast/Wide SCSI mode because of that.

--
Akop Pogosian

This space has been accidentally left blank.

by **Rich Tee** » Wed, 05 Mar 2003 03:14:52

> >> Looking at picking up a 711 Multipack 12-bay... And wondering about
> >> gotchas. I am planning on using it with an SS20 + F/W SCSI card. I
> >> am wondering two main things:

> > The only gotcha I can think of off the top of my head is that
> > the 12 way 711s are rated for Ultra SCSI. On an SS20, that
> > won't matter, but it might be an issue if you upgrade to a
> > newer machine.

> No, they are not rated UltraSCSI, or at least not when they're loaded
> with 12 drives. None of Sun's single-ended UltraSCSI cards (either
> on-board or PCI) is rated to support more than seven devices on a SCSI
> chain of up to 1.5 meters long or more than four devices on a SCSI of
> up to 3 meters long.

It's amazing what missing three characters can do! I meant to
say that the 12 way 711s are NOT rated...!

--
Rich Teer

President,
Rite Online Inc.

Voice: +1 (250) 979-1638
URL: http://www.rite-online.net

by **John** » Wed, 05 Mar 2003 21:59:42

Hello,

I recently bought a large batch of SS20's and found some Ross modules in
some of them :-). The sun/ross refs are as follows:

511-6423
511-6323

From a quick scan of the net, the '6423' is rated at 180mhz, and the '6323'
is 200mhz.

if the client ever got this working at full speed as the 'module-info' shows
60mhz!!

I replaced those proms with the 2.25 rev (do I need the 2.25r version?) ,
BUT, both modules show 180mhz!?... I can't find much info on the 200's apart
from this to be honest:

http://www.hypersparc.de/hypersparc/ueberblick.shtml
http://mbus.sunhelp.org/misc/sunparts.htm

So can anyone shed any light on with the '6323' modules show 180mhz, when

Are there 2 versions? Are there any other things needed.?
I did read that you need some ross patches for the OS?

It would also be interesting if anyone new the current market value of these
CPU's?

Many thanks

John

by **Fredrik Lundho** » Thu, 06 Mar 2003 05:32:46

>Hello,
>So can anyone shed any light on with the '6323' modules show 180mhz, when

I think there indeed are two versions of the 200MHz chip.
One for THe SS10 with a 40MHz MBus and one specifically for
the SS20 with its 50MHz mbus.

Try to force the bus-speed to 50MHz and see if it makes a difference.
(jumper on the mother-board)

/wfr
Fredrik
--
Fredrik Lundholm

by **Dennis Clark** » Thu, 06 Mar 2003 11:32:42

>Hello,

>I recently bought a large batch of SS20's and found some Ross modules in
>some of them :-). The sun/ross refs are as follows:

>511-6423
>511-6323

cool !

Quote:
>From a quick scan of the net, the '6423' is rated at 180mhz, and the '6323'
>is 200mhz.

well done .. still useable systems .. for some things anyways .. like apache

>if the client ever got this working at full speed as the 'module-info' shows
>60mhz!!

>I replaced those proms with the 2.25 rev (do I need the 2.25r version?) ,
>BUT, both modules show 180mhz!?... I can't find much info on the 200's apart
>from this to be honest:

yes you will need the 2.25r proms. There once was a guy on ebay selling
them super cheap. I bought five of them about a year ago and the work fine.
I have a quad Ross at home running apache fine and a friend with dual 200MHz
Ross units running fine with those proms. Generates a whack of heat though!

>http://www.hypersparc.de/hypersparc/ueberblick.shtml
>http://mbus.sunhelp.org/misc/sunparts.htm

>So can anyone shed any light on with the '6323' modules show 180mhz, when

>Are there 2 versions? Are there any other things needed.?
>I did read that you need some ross patches for the OS?

>It would also be interesting if anyone new the current market value of these
>CPU's?

umm .. about the same as any good high quality paper weight.

not much ... sorry ... they only have value with a warrantee these days.

Dennis

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