[asterisk-users] capacity

[Drew Gibson]

Our office averages around 1.5MB / mailbox, call it 10MB for rounding.

6,000 x 10MB = 60GB (n'est pas?)

2 x 250GB drives, mirrored, should cover that and the system quite nicely.

regards,

Drew

Disclaimer: Most of our employees are programmers so probably don't have 
any friends to call and leave messages! :-)



Steve Totaro wrote:
> RAID arguments (preference really) aside, 4k - 6k worth of student
> voicemails is going to require quite a bit of storage space.
>
> Thanks,
> Steve Totaro
>
> On Wed, Mar 19, 2008 at 12:01 PM, Drew Gibson <drew at oanda.com> wrote:
>   
>> Having ventured high enough and far enough to view the curvature of the
>>  Earth and having stayed up late enough long enough (why do disks only
>>  fail at the weekend?) to rebuild and restore RAID 5 sets, I proffer the
>>  following (not so) Humble Opinion .....
>>
>>  Dual power supplies, two thumbs up
>>
>>  but RAID 5 is only good for reducing storage costs on large volumes of
>>  data. It reduces performance and reliability over RAID 1. Don't put the
>>  OS on RAID 5 unless you like rebuilding servers from bare metal. It's
>>  much easier to rebuild and restore the data on RAID 5 sets if the OS is
>>  already up and running.
>>
>>  Your OS and other system critical files (Asterisk) should be on RAID 1
>>  for performance, redundancy and cost reasons.
>>
>>  More disks = higher cost and higher chance of failure.
>>
>>  Asterisk in general does not need much disk storage. The minimum drive
>>  size available in a new server tends to be overkill. Two drives as RAID
>>  1 gives you redundancy and performance. Adding a third drive for RAID 5
>>  adds cost, increases complexity and reduces reliability just to add
>>  storage capacity that you don't really need. (but the reseller WILL make
>>  more money and impress you with their command of the big words and
>>  acronyms on the spec sheet.)
>>
>>  If and only if you need to store many hundreds of gigs of data (eg.
>>  recording a very large volume of calls) then RAID 5 becomes useful (or
>>  RAID 10 or RAID n). You should add this "bulk storage" IN ADDITION TO
>>  the mirrored pair holding the OS.
>>
>>  regards,
>>
>>  Drew
>>
>>
>>
>>
>>  Steve Totaro wrote:
>>  > And I can post a link that shows a bunch of guys think the earth is
>>  > flat with a 5/10 google ranking also (like the barf guys).
>>  > http://www.alaska.net/~clund/e_djublonskopf/Flatearthsociety.htm
>>  >
>>  > I usually just call my guy at CDW and give him my needs, he is a
>>  > former techie gone sales.  He puts together a quote and emails it to
>>  > me for approval.
>>  >
>>  > I find HP server are very robust and rock solid at a decent price
>>  > point (IBM as well).  I like the 380 because you get six hot swap scsi
>>  > bays and redundant power supplies in a 2u profile, also, Digium and
>>  > Sangoma T1 cards have never given me an issue.
>>  >
>>  > Many on this list love Supermicro, I have yet to try them but I will
>>  > in the near future.  I have not heard a single complaint, only rave
>>  > reviews.
>>  >
>>  > I guess my original point was going for redundancy as far as storage
>>  > and power supplies with your dollar, not the fastest proc or maxed out
>>  > RAM that will not be needed.  Regardless of the actual hardware or
>>  > RAID setup, that is the angle I suggest you take.  4k - 6k students
>>  > will require quite a bit of storage.
>>  >
>>  > Thanks,
>>  > Steve Totaro
>>  >
>>  > On Wed, Mar 19, 2008 at 9:38 AM, Ron Joffe <rjoffe at yahoo.com> wrote:
>>  >
>>  >> On Tuesday 18 March 2008 22:12, Steve Totaro wrote:
>>  >>  > For your use, I would go for a RAID 5
>>  >>
>>  >>  I would highly recommend against a raid 5 set. I can give you more details if
>>  >>  you are interested, but these guys have most if it down : www.baarf.com see
>>  >>  the link on the left on "why should I not use Raid 5"
>>  >>
>>  >>  Ron
>>  >>
>>  >>
>>  >>
>>  >>
>>  >>
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>>
>>  --
>>  Drew Gibson
>>
>>  Systems Administrator
>>  OANDA Corporation
>>  www.oanda.com
>>
>>
>>
>>
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>
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-- 
Drew Gibson

Systems Administrator
OANDA Corporation
www.oanda.com