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Re: [dm-devel] Barriers still not passing on simple dm devices...
- From: Henrique de Moraes Holschuh <hmh hmh eng br>
- To: Mikulas Patocka <mpatocka redhat com>
- Cc: Ric Wheeler <ricwheeler gmail com>, ak linux intel com, Theodore Tso <tytso mit edu>, Linux Kernel Mailing List <linux-kernel vger kernel org>, device-mapper development <dm-devel redhat com>, Lee Revell <rlrevell joe-job com>, Jens Axboe <jens axboe oracle com>, Ric Wheeler <rwheeler redhat com>, "MASON, CHRISTOPHER" <CHRIS MASON oracle com>
- Subject: Re: [dm-devel] Barriers still not passing on simple dm devices...
- Date: Wed, 8 Apr 2009 12:16:12 -0300
On Wed, 08 Apr 2009, Mikulas Patocka wrote:
> I have seen an installation having generator backup, but with another
> serious flaw --- if someone plugged a computer causing short-circuit, it
> turned off the circuit breaker for the whole rack :)
You will be hard-pressed to find datacenters where the above is NOT true
:-)
Although, usually one has TWO independent power feeds per rack, so a short
is likely to bring down just half of it, and any equipment properly set up
with dual independent power feeds should survive...
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
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