topic Re: internal slots in Operating System - HP-UX

internal slots

Martin Wells — Fri, 09 May 2003 10:06:21 GMT

We have two K580 servers that have a single SCSI card connecting the two mirrored system disks. I need to know if we have any spare slots that we may be able to install a second card into. Is these any way of finding out how many slots we have free without actual looking at the machine

Thanks

Re: internal slots

Pete Randall — Fri, 09 May 2003 10:16:06 GMT

Martin,

You could use ioscan to compare the paths you have with the paths available in the K580. Of course that means you would have to know what paths are available and the easist way is to look at the back of the box where they're all labeled.

I'm trying to find a diagram for you that would give you that info.

Pete

Re: internal slots

Pete Randall — Fri, 09 May 2003 10:31:22 GMT

Martin,

Go to:
http://www.docs.hp.com/hpux/hw/index.html#K-Class%20Server

and select the I/O upgrade manual. Figure 3-2 will show you the path names for the HP-PB slots (if you zoom in enough). If you have HSC expansion slots, the path names don't seem to be identified, despite the fact the diagram is titled "HP HSC Expansion Slots". Go figure.

Still searching.

Pete

Re: internal slots

Stefan Farrelly — Fri, 09 May 2003 10:32:56 GMT

The easiest way is to check with ioscan;

ioscan -fk

This will list all SCSI controllers and if anything is on them, ie 10/0 should list your system disk (and mirror). If you have some spare SCSI controllers free they will show as SCSI Fast-Wide controller, and no disks or tapes will be listed under them (eg. on path 8/0 or 10/4 or 10/8) which means they are free.

Re: internal slots

Pete Randall — Fri, 09 May 2003 10:33:43 GMT

Martin,

Table 3-1 on page 3-8 in the same publication will give you the paths for the HSC expansion slots.

That ought to do it, I think.

Pete

Re: internal slots

LucianoCarvalho — Fri, 09 May 2003 10:35:17 GMT

hi,

I think this can help you.
http://www.docs.hp.com/hpux/pdf/A2375-90027.pdf

regards,

Re: internal slots

Martin Wells — Fri, 09 May 2003 10:48:51 GMT

output from ioscan -fk shows a number of the below interfaces below. Are these free?

ext_bus 5 10/12 c720 CLAIMED INTERFACE GSC add-on Fast/Wide SCSI Interface

Re: internal slots

Pete Randall — Fri, 09 May 2003 10:56:42 GMT

Martin,

Yes, if you see no devices listed after them, on that same 10/12 path, they're free. You won't even have to install another card.

Pete

Re: internal slots

Martin Wells — Fri, 09 May 2003 11:58:17 GMT

ext_bus 5 10/12 c720 CLAIMED INTERFACE GSC add-on Fast/Wide SCSI Interface

target 17 10/12.7 tgt CLAIMED DEVICE

ctl 4 10/12.7.0 sctl CLAIMED DEVICE Initiator

I Have the following on path 10/12

Re: internal slots

Pete Randall — Fri, 09 May 2003 12:05:15 GMT

Martin,

That's perfect. If there was anything, it would look like this:

ext_bus 1 0/0/1/1 c720 CLAIMED INTERFACE SCSI C896 Ultra
Wide Single-Ended
target 1 0/0/1/1.0 tgt CLAIMED DEVICE
disk 0 0/0/1/1.0.0 sdisk CLAIMED DEVICE SEAGATE ST33670
4LC
/dev/dsk/c1t0d0 /dev/rdsk/c1t0d0

Pete

Re: internal slots

Martin Wells — Fri, 09 May 2003 13:02:06 GMT

Thanks,

I have attached the output from the whole ioscan -fk just to make sure!

Re: internal slots

Pete Randall — Fri, 09 May 2003 13:14:42 GMT

Martin,

The 10/12 that I see in you ioscan is a parallel interface. I don't see any GSC add-on Fast/Wide SCSI Interface. Is this from the same machine?

Pete

Re: internal slots

Martin Wells — Fri, 09 May 2003 13:18:41 GMT

No sorry, the first outout was from one of our dev machines. The ioscan I attached is the one of our live boxes.

Re: internal slots

Martin Wells — Fri, 09 May 2003 13:19:00 GMT

No sorry, the first output was from one of our dev machines. The ioscan I attached is the one of our live boxes.

Re: internal slots

Pete Randall — Fri, 09 May 2003 13:22:53 GMT

So the live box, from which the attached ioscan came, is the one you want to put a second card into?

Pete

Re: internal slots

Martin Wells — Fri, 09 May 2003 13:34:21 GMT

Yes the attached is the server we would like to install another card into. Well the main aim is to reduce the single point of failure we have with both internal system disks being connected to the same card. If we already have a card installed that we could use maybe we will not need a spare slot?

Re: internal slots

Martin Wells — Fri, 09 May 2003 13:34:24 GMT

Re: internal slots

Martin Wells — Fri, 09 May 2003 13:34:27 GMT

Re: internal slots

Martin Wells — Fri, 09 May 2003 13:34:37 GMT

Re: internal slots

Martin Wells — Fri, 09 May 2003 13:34:39 GMT