Re: What should sys admins know about Oracle?

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>Good luck getting it. We are purchasing the new 'Shark'
>Enterprise Storage Systems from IBM.

>The smallest physical drive available is 18 Gig.

>The only configuration allowed on them is RAID 5.

>It is impossible to get a consistent stripe width
>across all RAID's.

>RAID 5 and cache are becoming the storage panacea.

Hi Jared,

The Shark ESS solution seems to be technically superior to the EMC equivalent, at least on paper. A properly implemented write cache over 160Mb/sec SSA disk racks in RAID5 monitored by two H70s and accessed via fibre over a SAN should do well I hope! I have a feeling that these systems were used in the recent TPC-C benchmark where the IBM S80 was the first to break the million mark - I have asked our IBM rep to determine if the ESS was used for this. The technology seems to have been put together properly from the ground up and not in a piece-meal fashion. The rep also said that EMC uses a single PowerPC for storage management while the ESS uses a twin H70 (more power!). All this comes at a cost, of course. FWIW, IBM is pushing hard in this area... and they seem to have won some orders in this part of the world. I fought for and successfully obtained 4.5 Gb disks instead of 9 Gb disks in our DB Server SSA racks three years back - more spindles for the $, but I am sure damagement isn't going to listen to me again when it is time to upgrade. Hmm... 18Gb disks - where-ever will we go next!

Let us know how the ESS measures up.
John Kanagaraj
Brunei Shell Petroleum
http://www.geocities.com/john_sharmila

God so loved the world that He didn't send a committee! (See John 3:16 for details)
** Opinions expressed here are solely mine and not necessarily those of my employer **

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