Waleed & list,

I researched this issue recently and found out that
the meta volume was "concatenating a bunch of hyper
volume". As you know, concatenation is NOT striping.
The hyper volumes get filled with data one after
another, eventually giving you the "simulation of a
striped volume", when all hypers are filled with data.

I don't know about the "single-host vs. multi-host"
addressibility issue. There are plans for supporting
"true striped volumes" in microcode level 68 or 69.
>From some "reliable sources" that does not look like
it will happen any time soon. So until then, you
should consider created mirrored hyper volumes within
EMC (RAID 1) and then create a striped volume using
Veritas Volume Manager, giving you a RAID 1+0
configuration, which is ideal.

Best regards,

Gaja

--- "Khedr, Waleed" <[EMAIL PROTECTED]> wrote:
> Four years ago the only hardware striping available
> on EMC I was aware of
> was RAID-S.
> Recently researching striping ideas on EMC and was
> told that we can achieve
> raid0+1 hardware striping on EMC.
> 
> I was told that EMC has some layer called
> meta-volume that is made of many
> other hyper-volumes.
> 
> Told also that meta-volumes could be raid-0
> (striped) and it's not a
> single-host addressable volume.
> 
> Does anybody know anything about this? Can we really
> get a hardware striped
> volume using EMC? 
> 
> Any limitations there?
> 
> Thanks.
> 
> 
> Waleed
> 
> 
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=====
Gaja Krishna Vaidyanatha
Director, Storage Management Products,
Quest Software, Inc.
Co-author - Oracle Performance Tuning 101
http://www.osborne.com/database_erp/0072131454/0072131454.shtml

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