SUMMARY: DU4.0D scsi device numbering

From: Willig Reimund <Willig.Reimund_at_gdr.de>
Date: Thu, 11 Mar 1999 18:04:25 +0100

Hello,
again answers came back in a quite fast way!!! Thanks to Alex Nord, Doc
Blinn, Viktor Holmberg, Vinzenz Esser, Alan Davis ...

my question was:

> i have a question concerning the scsi device numbering under DU4.0D.
> According to the SCSI man page the disk LUNs are as follows:
>
> b = lun 1
> c = lun 2
> d = lun 3
> e = lun 4
> f = lun 5
> g = lun 6
> h = lun 7
>
> what about LUN 0? Or in other words, is it possible to address 8 devices
> over one target id? for example:
>
> rza8c (target 1, LUN0)
> rzb8c (target 1, LUN1)
> rzc8c (target 1, LUN2)
> rzd8c (target 1, LUN3)
> rze8c (target 1, LUN4)
> rzf8c (target 1, LUN5)
> rzg8c (target 1, LUN6)
> rzh8c (target 1, LUN7)


answer is:
yes, thats the way it works. You can address an overall of 8 devices via LUN
0-7, but(!) only with raid controllers. In fact we are currently switching
over to EMC Storagedevices which are showing der logical disk structure in a
target-LUN fashion.

 mit freundlichen Gruessen
          Reimund Willig
------------------------------------------
e-mail: willig.reimund_at_gdr.de
       tel: +49-5205-941747
      fax: +49-5205-941725
  ** Schwer ist leicht was **
-----------------------------------------
Received on Thu Mar 11 1999 - 17:11:14 NZDT

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