Contemplating SSD Hardware RAID

From: Dan Harris <fbsd(at)drivefaster(dot)net>
To: pgsql-performance(at)postgresql(dot)org
Subject: Contemplating SSD Hardware RAID
Date: 2011-06-21 03:54:26
Message-ID: 4E0015F2.9060504@drivefaster.net
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I'm looking for advice from the I/O gurus who have been in the SSD game
for a while now.

I understand that the majority of consumer grade SSD drives lack the
required capacitor to complete a write on a sudden power loss. But,
what about pairing up with a hardware controller with BBU write cache?
Can the write cache be disabled at the drive and result in a safe setup?

I'm exploring the combination of an Areca 1880ix-12 controller with 6x
OCZ Vertex 3 V3LT-25SAT3 2.5" 240GB SATA III drives in RAID-10. Has
anyone tried this combination? What nasty surprise am I overlooking here?

Thanks
-Dan

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