Re: SAN vs Internal Disks - Mailing list pgsql-performance

From Michael Stone
Subject Re: SAN vs Internal Disks
Date
Msg-id 20070911210857.GQ1795@mathom.us
Whole thread Raw
In response to Re: SAN vs Internal Disks  (Decibel! <decibel@decibel.org>)
Responses Re: SAN vs Internal Disks  (Decibel! <decibel@decibel.org>)
List pgsql-performance
On Tue, Sep 11, 2007 at 03:55:51PM -0500, Decibel! wrote:
>Also, to reply to someone else's email... there is one big reason to use
>a SAN over direct storage: you can do HA that results in 0 data loss.
>Good SANs are engineered to be highly redundant, with multiple
>controllers, PSUs, etc, so that the odds of losing the SAN itself are
>very, very low. The same isn't true with DAS.

You can get DAS arrays with multiple controllers, PSUs, etc.  DAS !=
single disk.

Mike Stone


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