# Directories and filesystems

The INCD filesystems are based on the Lustre shared filesystem which is mounted in the compute nodes and in the submission/login nodes. Lustre is mostly suited to the storage of large/huge files. 

* For more specific information regarding the Lustre deployment at INCD please see the [__lustre section__](http://docs.ncg.ingrid.pt/books/filesystem-user-guide/chapter/lustre)

# Summary

## INCD-Lisbon cluster
| Name[1]             | Purpose  | Availability  | Quota [2]  | TimeLimit [3]  | Backup | 
|---                  |---       |---            |---         |---             |---     |
|  /home/unixgrp/user |  User default home | always  | 20GB/user  | none   | no| 
|  /data/unixgrp      |  Group data large data files [4]. | always | 100GB/group  | temporary (will be deleted after 6 months)[4] | no | 
| /exper-sw/unixgrp   | Install software for groups | on request| 20GB/group | permanent | no



## ISEC-Coimbra cluster
| Name[1]             | Purpose            | Availability  | Quota [2]  | TimeLimit [3]  | Backup | 
|---                  |---                 |---            |---         |---             |---     |
|  /home/ |  User default home | always        |           | none           | no     | 
## INCD-Minho cluster
| Name[1]             | Purpose            | Availability  | Quota [2]  | TimeLimit [3]  | Backup | 
|---                  |---                 |---            |---         |---             |---     |
|  /home/unixgrp/user |  User default home | always        | 200GB/user  | none           | no     |
|  /scratch/unixgrp/user |  User working directory | always        | 10TB/group  | none           | no     |

**[1]** Each user belongs to a Unix group: **unixgrp** - determined by the project they are attached to\
**[2]** Increases to these quotas will be considered on a case-by-case basis.\
**[3]** Time limit defines time after which a file is erased on the file system since its most recent access time, as defined by the file access timestamp.\
**[4]** This folder has read+write permission to all users belong same group

> **_NOTE:_**  To know your unix group id type the command:  __id__ 

# Filesystems

**/home**

* Intended to be used for source code, executables and immutable data (input files etc), NOT large data sets.
* Globally accessible from all nodes within a system.
* Quotas apply. Please read our [Disk Quota Policy]( http://docs.ncg.ingrid.pt/books/filesystem-user-guide/page/disk-quota-policy) To know your actual quota limit:
```
lfs quota -uh username /home/unixgrp/username

Disk quotas for usr username (uid XXXXXX):
     Filesystem           used   quota  limit grace  files   quota   limit   grace
  /home/unixgrp/username  11.6G  20G   20G     -      1395    10400  10400    -
```

> **_NOTE:_** if your used >=quota users are not allowed to write

**/data**
* Each project has a directory with pathname /data/unixgrp on each compute node. Users connected to the project have rwx permissions in that directory and so may create their own files in those areas.
* Globally accessible from all nodes within a system.
* Quotas apply. Please read our [__Disk Quota Policy__]( http://docs.ncg.ingrid.pt/books/filesystem-user-guide/page/disk-quota-policy) To know your actual quota limite:
```
lfs quota -uh username /data/unixgrp

Disk quotas for usr username (uid XXXXXX):
     Filesystem    used   quota  limit   grace   files    quota    limit   grace
  /data/unixgrp/  219.6G  300G   300G     -      81395    1102400  102400    -
```

> **_NOTE:_**  There are also limits on the number of files (files) that can be owned by a group (project) on /data. 

**/exper-sw**
* Intended to be used for software, shared by group
* Globally accessible from all nodes within a system.
* Permissions to use based on request