SAS Array with or without expander

Posted by tegbains on Server Fault See other posts from Server Fault or by tegbains
Published on 2009-08-18T06:48:03Z Indexed on 2010/04/08 3:43 UTC
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sas

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raid

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zfs

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Performance

Is it better to use a SAS Expander backplane for 12 drives via one SAS connection or is it better to use a SAS backplane with 3 SAS connections? This is in terms of performance, rather than expansion. This array will be setup using ZFS on a OpenSolaris via a LSI SAS controller as an iSCSI target.

The two products being considered are the SuperMicro SuperChassis 826A-R1200LPB or the SuperChassis 826E2-R800LPB

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