[asterisk-users] Suggestion of Server Specifications for Asterisk

[Leandro Dardini]

Benny is right, if writes are smaller than the stripe size, there is no
gain in speed in using raid5. Not only, but you can have lower performance
than a single disk.

The ramdisk can be a good idea, but if the load is somewhat constant, you
end only moving the slow write ahead of time. 200 calls at 64kbit/s are
just 1.5 Mbyte/s ... even the slowest disk can accomplish this.

Leandro

2012/8/4 Shahid H <shahidh at gmail.com>

> Instead of buying expensive disk.. I might setup a ramdisk (about 2GB) to
> do 200 calls recordings.
>
> Once the call hangup/completed it will then move recording file to SATA
> HDD.
>
> What do you think of this?
>
>
> On Sat, Aug 4, 2012 at 5:51 PM, Benny Amorsen <benny+usenet at amorsen.dk>wrote:
>
>> Leandro Dardini <ldardini at gmail.com> writes:
>>
>> > A single sata disk will be an unacceptable single point of failure. Get
>> > three disks and get in raid5 configuration. You'll gain in safety and
>> > speed.
>>
>> RAID-5 is slower than single disks when it comes to write IOPS (a commit
>> is not done until the slowest disk has answered). Avoid it for write
>> heavy workloads at all costs unless you are writing sequentially in one
>> file with write caching enabled.
>>
>>
>> /Benny
>>
>>
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>
>
> --
> _____________________________________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> New to Asterisk? Join us for a live introductory webinar every Thurs:
>                http://www.asterisk.org/hello
>
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