[Asterisk-Users] Hard drive write cache

[Paul Hales]

Raid card with an onboard battery backup.

PaulH

-- 
Paul Hales
Technical Manager
AsteriskIT
www.asteriskit.com.au
bus: 03 8320 8100
mob: 0434 673 529



shadowym wrote:
>  
> I am looking at ways to harden my asterisk install to prevent computer
> related issues from happening.  I am concerned about about disk write cache.
> That seems to be a major source of hard drive corruption on power failure.
> Hard Drive corruption is simply unacceptable for the 99.999% uptime
> requirements of my Asterisk install that needs to be as reliable as a
> proprietary PBX.
>
> Of course I will be using redundant power supplies, raid 1 and use a UPS.
> None of those things mean much if the power cords accidentally get pulled
> from the back of the server.  Unlikely as it may be I have to consider ALL
> possibilities. 
>
> So is disabling the write cache a good way to reduce the risk of hard drive
> corruption for an Asterisk server?  I am not too concerned about the reduced
> performance/lifetime of hardrives with write cache disabled since Asterisk
> is not a very write intensive environment.  Even with lot's of voicemail
> going on.
>
> Any other recommendations/links for increasing the reliability of Asterisk
> servers?
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