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Added GraceTime

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caubet_m
2021-01-27 08:56:31 +01:00
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pages/merlin6/02 accessing-merlin6/storage.md
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@ -37,17 +37,23 @@ Merlin6 offers the following directory classes for users:
* ``/export``: Export directory for data transfer, visible from `ra-merlin-01.psi.ch`, `ra-merlin-02.psi.ch` and Merlin login nodes.
* Refer to **[Transferring Data](/merlin6/transfer-data.html)** for more information about the export area and data transfer service.
{{site.data.alerts.tip}}In GPFS there is a concept called <b>GraceTime</b>. Filesystems have a block (amount of data) and file (number of files) quota.
This quota contains a soft and hard limits. Once the soft limit is reached, users can keep writing up to their hard limit quota during the <b>grace period</b>.
Once <b>GraceTime</b> or hard limit are reached, users will be unable to write and will need remove data below the soft limit (or ask for a quota increase
when this is possible, see below table).
{{site.data.alerts.end}}
Properties of the directory classes:
| Directory | Block Quota [Soft:Hard] | Block Quota [Soft:Hard] | Quota Change Policy: Block | Quota Change Policy: Files | Backup | Backup Policy |
| ---------------------------------- | ----------------------- | ----------------------- |:--------------------------------- |:-------------------------------- | ------ | :----------------------------- |
| /psi/home/$username | USR [10GB:11GB] | *Undef* | Up to x2 when strongly justified. | N/A | yes | Daily snapshots for 1 week |
| /data/user/$username | USR [1TB:1.074TB] | USR [1M:1.1M] | Inmutable. Need a project. | Changeable when justified. | no | Users responsible for backup |
| /data/project/bio/$projectname | GRP [1TB:1.074TB] | GRP [1M:1.1M] | Subject to project requirements. | Subject to project requirements. | no | Project responsible for backup |
| /data/project/general/$projectname | GRP [1TB:1.074TB] | GRP [1M:1.1M] | Subject to project requirements. | Subject to project requirements. | no | Project responsible for backup |
| /scratch | *Undef* | *Undef* | N/A | N/A | no | N/A |
| /shared-scratch | USR [512GB:2TB] | USR [2M:2.5M] | Up to x2 when strongly justified. | Changeable when justified. | no | N/A |
| /export | USR [10MB:20TB] | USR [512K:5M] | Soft can be temporary increased. | Changeable when justified. | no | N/A |
| Directory | Block Quota [Soft:Hard] | Block Quota [Soft:Hard] | GraceTime | Quota Change Policy: Block | Quota Change Policy: Files | Backup | Backup Policy |
| ---------------------------------- | ----------------------- | ----------------------- | :-------: | :--------------------------------- |:-------------------------------- | ------ | :----------------------------- |
| /psi/home/$username | USR [10GB:11GB] | *Undef* | N/A | Up to x2 when strongly justified. | N/A | yes | Daily snapshots for 1 week |
| /data/user/$username | USR [1TB:1.074TB] | USR [1M:1.1M] | 7d | Inmutable. Need a project. | Changeable when justified. | no | Users responsible for backup |
| /data/project/bio/$projectname | GRP [1TB:1.074TB] | GRP [1M:1.1M] | 7d | Subject to project requirements. | Subject to project requirements. | no | Project responsible for backup |
| /data/project/general/$projectname | GRP [1TB:1.074TB] | GRP [1M:1.1M] | 7d | Subject to project requirements. | Subject to project requirements. | no | Project responsible for backup |
| /scratch | *Undef* | *Undef* | N/A | N/A | N/A | no | N/A |
| /shared-scratch | USR [512GB:2TB] | USR [2M:2.5M] | 7d | Up to x2 when strongly justified. | Changeable when justified. | no | N/A |
| /export | USR [10MB:20TB] | USR [512K:5M] | 10d | Soft can be temporary increased. | Changeable when justified. | no | N/A |
{{site.data.alerts.warning}}The use of <b>scratch</b> and <b>export</b> areas as an extension of the quota <i>is forbidden</i>. <b>scratch</b> and <b>export</b> areas <i>must not contain</i> final data.
<br><b><i>Auto cleanup policies</i></b> in the <b>scratch</b> and <b>export</b> areas are applied.