[rescue] EMC question (Pictures)
swl at catbert.net
Thu Jun 17 16:36:53 CDT 2004
On Jun 17, 2004, at 2:09 PM, Thomas Gallaway wrote:
> I guess that way they dont have to use a network switch. But why dual
> controllers per chassie.
If by controllers you mean data movers, then it's for performance and
scalability; if you mean FC or ethernet adapters it's for path
redundancy. Specifically, each port on the Emulex HBA would be
connected, either directly or via separate switches, to a different FC
board in an EMC Symmetrix array, or possibly to different service
processors on an EMC Clariion (I know the Celerra is supported with the
Symmetrix, and I think it is also supported with the Clariion).
> Also I have not found any IDE or SCSI drive anywhere. Going to
> investigate a bit further. The
> controll station had a floppy in the inside too.
See above. The data movers are just NFS/CIFS gateways for EMC storage
arrays - they don't use internal storage for the exported filesystems.
I don't know if they're supposed to have internal boot disks, or if
they boot from the EMC storage array. [We use EMC Symmetrix, Clariion
and Centera ewhere I work, but no Celerra.]
Never take life seriously - Nobody gets out alive anyway
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