[mdlug] Quotas. How do they work?

[Chris Baldwin]

It sounds like you might want to consider other methods for this data 
transfer. Have you thought about setting up an sftp server, or maybe 
subscribing to a service like dropbox? This way they can just email each 
other links and/or directories.

-Chris B.

On 3/29/11 11:07 AM, Robert Adkins II wrote:
> Two of the users in question receive hundreds of megabytes of data and also
> forward to other users inhouse and out that are also into the hundreds of
> megabytes.
>
> This can quickly become an unmanageable situation.
>
> Also... The amount of email and size of files has been increasing
> considerably as well.
>
> My archiving activities on job related drives has had to be ramped up
> considerably to keep from hitting the drive empty ceiling. What used to take
> upwards of 6 to 8 months is now filled up in 3 to 5 months.
>
> Thanks again,
> -Rob
>
>
>
>> -----Original Message-----
>> From: Mark Montague [mailto:markmont at umich.edu]
>> Sent: Tuesday, March 29, 2011 11:03 AM
>> To: Robert Adkins II
>> Cc: mdlug at mdlug.org
>> Subject: Re: [mdlug] Quotas. How do they work?
>>
>>    On March 29, 2011 10:47 , "Robert Adkins II"<radkins at impelind.com>
>> wrote:
>>> The reason for holding these users to a quota is important. If I do
>>> not, then they will continue to grow their email storage,
>>> indefinitely. It is literally a teeth pulling operation to
>>> "permanently" remove data from the servers that is 6 years out of
>>> date. So, I'm looking at having to manage inboxes with a
>> potential size of "unlimited".
>>
>> That's the same situation that the University of Michigan is
>> in with their main campus-wide IMAP service, actually, and it
>> hasn't caused a problem.  There are no quotas, and the
>> potential size of inboxes is "unlimited".  Most people don't
>> keep tons of mail, and the rate of growth of email storage is
>> entirely manageable.  Keep in mind that while most students
>> will leave after 4-5 years (undergraduate) or 7-9 (Ph.D.)
>> -- and mailboxes are deleted around 6 months to one year
>> after someone departs -- most staff and faculty stick around
>> for longer.
>>
>> I've included some statistics below that some people may find
>> interesting.
>>
>> --
>>     Mark Montague
>>     mark at catseye.org
>>
>>
>> ------------------------------
>>    IMAP Usage Summary 2011-03-28
>> ------------------------------
>>
>> --- total disk data  ---
>> 64.84 TB (73.2%) disk used of 88.63 TB total There are 14.93
>> TB left before 90% utilization
>>
>> --- total size data  ---
>> 61.86 TB total for 85342 users
>>
>> average:  760.03 MB
>> median:   302.01 MB
>>
>> --- user size distribution ---
>> under 50MB:   21776  25.52%
>> under 200MB:  35850  42.01%
>> over 1GB:     18994  22.26%
>> over 5GB:      1373   1.61%
>>
>> --- aggregate folder sizes ---
>> trash:     1259.36 GB  (2.0%)
>> SpamBox:    102.29 GB  (0.2%)
>>
>> --- usage statistics ---
>> active users:    69510 (81.4%) -- read or received mail
>> logged in users: 52521 (61.5%)
>> disabled users:   5370 ( 6.3%)
>>
>> --- client statistics ---
>> web users:     41195 (78.4%)  web-only users:        0 ( 0.0%)
>> proxy users:   52521 (100.0%)  proxy-only users:  11325 (21.6%)
>> gpcc users:        3 ( 0.0%)  gpcc-only users:       1 ( 0.0%)
>>
>> --- messages delivered ---
>> 10604330 total messages delivered
>>     127429 messages delivered to SpamBox ( 1.2%)
>>
>> --- total system load ---
>> 336284.64 total system load
>>        4.84 active user average load
>>
>> --- load by process ---
>> imap: 295236.43    pop:  18896.48    lmtp:  22151.72
>>              87.8%              5.6%               6.6%
>>
>> --- total logins ---
>> imap: 28561295    pop: 7245908
>>            79.8%           20.2%
>>
>>
>>
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