Storage and file management: Difference between revisions

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<tabs>
<tab name="Cedar">
{| class="wikitable" style="font-size: 95%; text-align: center;"
{| class="wikitable" style="font-size: 95%; text-align: center;"
|+Filesystem Characteristics  
|+Filesystem Characteristics  
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|Home Space
|Home Space
|50 GB and 500K files per user<ref>This quota is fixed and cannot be changed.</ref>
|50 GB and 500K files per user<ref>This quota is fixed and cannot be changed.</ref>
|Yes for Cedar, No for Graham (NFS)
|Yes
|Yes
|No
|Yes
|Yes
|-
|Scratch Space
|20 TB and 1M files per user<ref>Currently scratch space cannot be increased, and an increased quota of 100 TB per user is temporarily applied on Graham. We plan to move it back down to 20TB when a technical solution has been deployed.</ref>
|Yes
|No
|Files older than 60 days are purged.<ref>See [[Scratch purging policy]] for more information.</ref>
|Yes
|Yes
|-
|Project Space
|1 TB and 500k files per group<ref>Project space can be increased to 10 TB per group by a RAS request. The group's sponsoring PI should write to [[technical support]] to make the request.</ref>
|Yes
|Yes
|No
|Yes
|Yes
 
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</tab>
<tab name="Graham">
{| class="wikitable" style="font-size: 95%; text-align: center;"
|+Filesystem Characteristics
! Filesystem
! Default Quota
! Lustre-based?
! Backed up?
! Purged?
! Available by Default?
! Mounted on Compute Nodes?
|-
|Home Space
|50 GB and 500K files per user<ref>This quota is fixed and cannot be changed.</ref>
|No
|Yes
|Yes
|No
|No
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The backup policy on the home and project space is nightly backups which are retained for 30 days, while deleted files are retained for a further 60 days - note that is entirely distinct from the age limit for purging files from the scratch space. If you wish to recover a previous version of a file or directory, you should contact [[technical support]] with the full path for the file(s) and desired version (by date).
The backup policy on the home and project space is nightly backups which are retained for 30 days, while deleted files are retained for a further 60 days - note that is entirely distinct from the age limit for purging files from the scratch space. If you wish to recover a previous version of a file or directory, you should contact [[technical support]] with the full path for the file(s) and desired version (by date).
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== See also == <!--T:13-->
== See also == <!--T:13-->
Bureaucrats, cc_docs_admin, cc_staff
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