Re: Cabling question

[Roberto José Etcheverry Romero <yggdrasil.raiker@xxxxxxxxx>]

Actually, that 2780 is more than capable of handling the other 6 disks
(unless you want another LPAR). IIRC it has 3 SCSI ports, so you just plug
the SCSI cable that should be dangling around the 0595 into the second port
off the 2780.
Running a cable between controllers is only done on the "protected cache"
card pairs, like the 5580 and the like.
Besides, a 571A is a very very very slow card, it has no cache and is more
of a "tape controller" card.
I'm taking a picture of one of my 0595's with both bays connected to the
same card and sending it offlist to you.

Best Regards,



On Tue, Nov 5, 2013 at 9:50 AM, <rob@xxxxxxxxx> wrote:

> On my 8203-E4A,
> on it's Linux lpar,
> This:
>
>
>                     IOA Hardware Resource Information Details
>
>
> Manufacturer . . . . . . . . . . . . . . : IBM
> Machine Type and Model . . . . . . . . . : 2780001
> Firmware Version . . . . . . . . . . . . : 000E0000
> Serial Number. . . . . . . . . . . . . . : 07226094
> Part Number. . . . . . . . . . . . . . . : 0000042R6927
> Plant of Manufacturer. . . . . . . . . . : 004C
> Cache Size . . . . . . . . . . . . . . . : 235 MB
> DRAM Size. . . . . . . . . . . . . . . . : 200 MB
> Resource Name. . . . . . . . . . . . . . : /dev/sg12
>
> Physical location
> PCI Address. . . . . . . . . . . . . . . : 0001:c0:01.0
> SCSI Host Number . . . . . . . . . . . . : 2
> Platform Location. . . . . . . . . . . . : U0595.001.13230A8-CB1-C01
> Current Requested Caching Mode . . . . . : Default
>
> controls the 6 disks in the left (from the front) of the 0595.  I want to
> add 6 more disks into the right bay.  I've procured a 571A card and stuck
> it into U0595.001.13230A8-CB1-C04.
>
> I think I then have to run a 42R4053 cable from C01 to C04 as shown in one
> of our other 0595's.  Is this the right cable?  Why do I think that?  Well
> I have another 0595 and that is what it uses.  Granted I didn't confirm
> the identity of the two cards it connects.
>
>
> Yes, I realize this is only temporary as 0595's will not be supported in
> the next release and these 6 disks, cable, and card I've just bought is
> only temporary.
>
> Rob Berendt
> --
> IBM Certified System Administrator - IBM i 6.1
> Group Dekko
> Dept 1600
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