>>> On Sat, Jan 5, 2008 at  2:31 PM, in message
<[EMAIL PROTECTED]>, "R.S." <[EMAIL PROTECTED]>
wrote: 
-snip-
> Since mainframe does not support iSCSI, there is no reason to compare 
> what is cheaper/better/etc.

Sure there is.  Just to be clear, z/OS !== "mainframe."  Linux on the mainframe 
does support iSCSI.  I wouldn't be surprised if z/VM supports it in the 
not-too-distant future.  Don't throw applications onto midrange hardware when 
you have Linux available for your mainframes.

-snip-
> Again, no difference, because Open Systems *do not support FICON. (I 
> understand it in this context as non-mainframe systems)

> There are *similar* technologies: FICON and FC (Fibre Channel). They use 
> the same hardware but they "talk" in completely different languages.

Linux for System z understands ESCON, FICON, and SCSI over FCP.  (FICON and FCP 
use the same hardware with different microcode loads).  So, whether your 
storage arrays are configured for ECKD, or "open systems," Linux can use them.


Mark Post

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