From mboxrd@z Thu Jan  1 00:00:00 1970
From: mfidelman@meetinghouse.net (Miles Fidelman)
Date: Mon, 18 Apr 2016 15:49:39 -0400
Subject: anyone aware of a high availability setup that relies on fully
	redundant install?
In-Reply-To: <208224.1460954905@turing-police.cc.vt.edu>
References: <alpine.LFD.2.20.1604171027170.5248@localhost.localdomain>
	<208224.1460954905@turing-police.cc.vt.edu>
Message-ID: <57153A53.3070702@meetinghouse.net>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org


On 4/18/16 12:48 AM, Valdis.Kletnieks at vt.edu wrote:
> On Sun, 17 Apr 2016 10:47:55 -0400, "Robert P. J. Day" said:
>>    i figure this is as good a place as any to ask ... is anyone here
>> aware of anyone using a linux config and install that, for the
>> purposes of reliability or high availability or whatever you want to
>> call it, relies on a second, completely independent installation of
>> linux on the same hard drive?
> <snip>
>
> Most implementations  of "high availability" would see the phrase "on the same
> hard drive" and start pointing and laughing at the single point of failure.
>

Yup.  That was my reaction.  HA starts with either 2 servers and either 
a) mirrored drives (e.g., using DRBD) or b) a HA RAID cluster.

Miles Fidelman