Question

Best Storage Configuration for an Oracle RAC Cluster

Asked by: dpapaloi

I setup a 2 node Oracle RAC Cluster using 11G.   My 2 nodes are DL360s G4s + 8 GB of memory OS is W2003 64bit.  My shared disk is provided by an HP All-in-One Storage Server which has 6 x 250 gb SATA 7.2k drives.  My database is only 30 GBs so I don't need much space.     My nodes talk to AiO using iSCSI which works ok.  My interconnect between my nodes is infiniband at 10GBs.   In my initial tests my RAC cluster runs 4 times slower than my production system which is a single DL585 with 16GBs of memory and 4 x 2.4 ghz processors also running on W2003 64bit enterprise.   I think my bottle neck is the drives on my storage server.  They are 7200 RPM Sata Drives. To address the slow disk situation I was able to add a MegaRaid-4XLP Sata II Raid Controller to my storage server and an external SATA enclosure.   I was able to add 2 x Crucial 32GB Solid State Disks in the enclosure and they seem to work alot faster but I am concerned that these are not intended for server use and intended to replace notebook hard drives.  I also own a Compaq 5314 dual Fiber Channel JBOD with 8 x 250 GB disks that was from an HP EVA.  I don't need that much space but perhaps I can install ExtremeRaid 5000 Fiber Channel Raid Controller in my storage server and use my JBOD as my shared disk.  AiO can configure any disk I add to it as a dynamic disk that can be used as an iSCSI server.   I am looking for the best solution that will give me optimal speed and scalability using my AiO Storage Server.  

Thanks..


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Asked On
2008-04-21 at 22:18:10ID23341891
Topics

Grid

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Computer Hard Drives

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Storage Technology

Participating Experts
1
Points
125
Comments
6

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by: andyalderPosted on 2008-04-22 at 08:07:38ID: 21411842

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by: dpapaloiPosted on 2008-04-22 at 17:43:01ID: 21416848

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by: andyalderPosted on 2008-04-23 at 00:45:53ID: 21418434

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by: dpapaloiPosted on 2008-04-23 at 05:22:28ID: 21419799

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by: andyalderPosted on 2008-04-23 at 06:51:20ID: 21420646

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