Re: Why HDD performance is better than SSD in this case

From: George Neuner <gneuner2(at)comcast(dot)net>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: Why HDD performance is better than SSD in this case
Date: 2018-07-18 16:44:10
Message-ID: 9c3a9ae4-25c7-c6e4-7405-a443a2a77aa9@comcast.net
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On Wed, 18 Jul 2018 09:46:32 +0200, Fabio Pardi <f(dot)pardi(at)portavita(dot)eu>
wrote:

> RAID 0 to store production data should never be used. Never a good
> idea, in my opinion.

RAID 0  by itself  should never be used.  Combined with other RAID
levels, it can boost performance without sacrificing reliability.
https://en.wikipedia.org/wiki/Nested_RAID_levels

Personally, I don't like RAID 0 + ? schemes because they use too many
disks (with associated reliability issues).  The required performance
usually can be achieved in other ways.  But YMMV.
George

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