Computing Resource Quotas PolicySee also the Quota Questions FAQ.
Summary of PolicyUsers do not have unlimited access to CSE's computing resources. Disk usage, printing and internet traffic (excluding email) all have per-user quotas. Base quotas are set in appropriate classes in the User DataBase (UDB) for the various categories of user at CSE. Additional quota must be requested from System Support or purchased.
History of Policy
- (March, 2004 - Previous revision (avg 50% increase in disk quotas))
- 12 April, 2005 - First revision in online form. Substantial base disk quota increases for most classifications.
- 19 June, 2006 - Added new proposed numbers
- 27 Oct, 2008 - Updated with latest numbers
- 27 May, 2013 - Updated with latest numbers
Who This Policy Applies ToAll users
Who Maintains This PolicyComputer Support Group, CSE Computing Committee
Policy DescriptionThis policy is broken down by user classification. Some users will fall inside several classifications. All users should fall under at least one classification (otherwise they wouldn't have any resources).
Base allocationsCurrent allocation numbers:
Green indicates an increase since the previous policy revision (up to 100%)
Blue indicates an increase of 100% or more
Red indicates a decrease in quota
|Classification||Disk Quota||IP Quota||Print Quota|
|Enrolled in CSE Program||160MB||750MB||100 pages|
|Enrolled in non-CSE Program||80MB||750MB||100 pages|
|Enrolled in a CSE subject (#)||60MB||unlimited||150 pages|
|Undergraduate thesis students||500MB||unlimited||1000 pages|
|Postgraduate research students||1000MB||unlimited||1000 pages|
|Visitor/Conjoint accounts||as per staff||1000 pages|
|Casual tutors (base)||nil||1000MB||1000 pages|
|Casual tutors (#)||120MB||100MB||750 pages|
|Student Executive (societies)||100MB||400MB||200 pages|
|Courtesy accounts||200MB||50MB||1000 pages|
(#) These allocations are received per subject.
- Students get quota once for being in a program, and again for each course (subject) that they are enrolled in.
- Some subjects have special needs, and thus may have additional resource quotas
Additional allocationsThe following guidelines are to help People.SystemSupport handle additional resource requests. The numbers are given as Maximum/Suggested increments. The maximum is inclusive of the base allocation. The suggested increments are for when there is no clear need for a larger increment (up to the maximum). Disk quotas are for primary fileservers.
|Classification||Disk Quota||Print Quota|
|Undergraduate thesis students||? (1GB/100MB,250MB,500MB)||?|
|Postgraduate research students||2GB/100MB,200MB,500MB,1GB(2GB/500MB,1GB)||?/500,1000 pages|
- All student requests must be approved by the student's academic supervisor.
- All staff requests must be approved by the staff member's supervisor, if applicable.
- Colour print quota: Postgraduate students may be allocated a one-off colour quota of up to 500 pages. This is representative of their being around for a number of years and is the culmination of their thesis (printing it).
When a user requires further disk quota, they will need to move their home directory to another machine. A rough guide for such home directories is 1GB base, up to 10GB maximum. Unlimited space (up to disk size) can be used if a scratch space is allocated. A scratch space is not backed up, but also not quota-ed.
Checking your current allocation
Disk QuotaYou can check your current disk quota, and current disk usage by running the disk_guess command. Typical output of this command will look like the following:
You are currently using 8880K which is below your quota of 22528K Your 6 biggest files are: <list of files here> Your 6 biggest directories are: <list of directories here>
It will also alert you to files which you may not wish to keep in your account, such as core files and .o files. You can get a less detailed output of your disk usage by running the rquota command.
The acc explain=dlimit will also show you a breakdown of your quota, showing you why your quota is set to the value it is. If acc and rquota show different numbers, then you probably have a preserved disk quota, which is only temporary at the start of sessions to iron out ripples in quotas as class allocations vary.
Your current print quota and print usage can be seen in the output of acc. When you run the acc command, you will see some lines relating to your print quota, such as
Printer Usage Status : Post-census Allocation 3585 : Purchased 75 : Used 1072 : Available 2588
The Post-census Allocation refers to how many printing pages you have been allocated due to being enrolled in CSE programs and courses. If your Available quota is 0 or less, you will not be able to print, and will need to purchase more print quota to be able to continue printing (or, in the case of research/thesis students, more may be able to be requested by your supervsior on your behalf). See the CSE Help Desk to purchase more quota.
More detailed information with regards to your printing can be obtained through the priv pquota command. This will show you how many pages you have printed out each day, and give approximate times for the printing. priv pquota -v will show you each print job you have sent, how many pages it was, which computer it was printed from and which printer it was sent to.
IP QuotaYour current IP quota can be seen in the output of ipq, or acc (note that acc is only updated once each day). Detailed information on your usage and allocation can be found using a combination of priv ipq_explain, priv ipq_summary, and priv ipq_list.
Presently, many people at CSE have unlimited IP Quota. However, network usage for each account is still recorded.
ImplementationWhen implementing quota increases, decrease additional quotas of all children by the relevant amount, so that any with additional allocations do not get further increases.
For example, say old staff quotas were 200MB, and new 500MB. Also, employee abc has 600MB total disk quota (200MB + 400 additional). When staff quotas are increased, their additional allocation should be reduced by 300MB to keep the total balanced. Resulting in 500MB + 100 additional.
Also take note to apply the above to sub-classes as well as users. Subjects with extra quota allocations should be equivalently balanced.
Technical NotesRelevant UDB fields (all are cumulative from subclasses):
- Disk Quota: dlimit, plus the following which should never be used directly: temporarydlimit, preservedlimit
- Print Quota: baseprintallocation, equinoxprintallocation, solsticeprintallocation. Additional allocations are stored in the print quota system.
- IP Quota: ipqbase, ipqequinox, ipqsolstice. Additional allocations are stored in the IP Quota system.
-- SimonB - 12 Apr 2005 -- RobLawther - 23 Jun 2005