RE: EMC DMX & DW
- From: "Powell, Mark D" <mark.powell@xxxxxxx>
- To: "'oracle-l@xxxxxxxxxxxxx'" <oracle-l@xxxxxxxxxxxxx>
- Date: Fri, 20 Feb 2004 13:08:21 -0500
The first box we had from EMC we used OS level stripping and mirroring with.
With the last box EMC would only set the box up as RAID-S, the EMC version
of RAID-5, and we mirror RAID-S. Considering RAID-S has 25% overhead to the
normal 20% overhead of RAID-5 and the fact mirroring is 100% disk storage
overhead it actually seems to perform reasonably well at the cost of only a
few disk (more money than I have).
Later this year we will be getting a new disk farm. It might be EMC and we
will have to see what the vendor support/sales team makes available to us.
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Rich Holland
Sent: Friday, February 20, 2004 11:41 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: EMC DMX & DW
I'd be really surprised if you couldn't order it (or configure it) as Raid 1
instead. I don't have a DMX here, but typically configure everything as 0+1
(mirrored & striped) for our ERP applications.
Others I've spoken to have fallen in love with the DMX, which supports
snapshots; instead of an equal amount of disk to support BCV's, you now only
need 10-15% to take an instantaneous "snapshot" of your data.
Rich
--
Rich Holland (913) 645-1950 SAP Technical Consultant
print unpack("u","92G5S\=\"!A;F]T:&5R(\'!E<FP\@:&%C:V5R\"\@\`\`");
> -----Original Message-----
> From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On
> Behalf Of Khedr, Waleed
> Sent: Wednesday, February 11, 2004 12:59 PM
> To: 'oracle-l@xxxxxxxxxxxxx'
> Subject: EMC DMX & DW
>
>
> Does anybody have good or bad experience using EMC DMX storage for big
Data
> Warehouse project?
>
> I was told it's Raid-5 :(
>
> Thanks
>
> Waleed
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