SQL 2005 Volume Design on EqualLogic PS5000

I am in the process on the implementation of a SQL 2005 server in ESX 3.5 utilizating an Bay Dell EqualLogic PS5000 (16x15K SAS drives).  My question is on the volume / lun considerations.  Because the equallogic use virtualized storage does really matter if I put separate log and DB on Lun volumes?  Any lun volume goes on inputs and outputs should be spread across all disks in any case, if I understand correctly.  Is there anything else I should think to when planning on volumes of sql in ESX?

Any advice would be greatly appreciated.

You must look in Workgroup Manager to see what connections use port Eth.  Regarding iSCSI, if you use a HW iscsi device you can use several volumes and make the poor load balancing to balance the use of the road.  The Equallogic will do a decent job, balancing connections to ports different Eth.  You can't control which Eql Eth ports are used for a given volume.

If you use iscsi sw IP VMkernel on the vSwitch will use only 1 path to each port EQL Eth IP address.  So if you have 2 sw iscsi NIC in a vSwitch and several volumes, I hope that you will be on > 1 port Eql Eth and then the IP vmkernel will balance the loads on the 2 natachasery.

Now that I have more information, I think that more volumes are better in your case.

You cannot grant a lot about EQL bays, including the use of processor cache or volume.  There is no publicly available documents that describe the inner workings of the tables.  Several volumes is fine, I think the max is 512 or 1024.

Ben

Tags: VMware

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