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accounts:ics_home_directory [2022/01/05 12:37] Hans |
accounts:ics_home_directory [2024/07/16 10:58] (current) relkhou1 [Storage System] |
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| * [[accounts:snapshots|28 days of self service snapshots]] + long term disaster recovery backups | * [[accounts:snapshots|28 days of self service snapshots]] + long term disaster recovery backups | ||
| + | ==== Storage System ==== | ||
| + | Typically, there are two types of storage systems at ICS. | ||
| + | === Network File System === | ||
| + | Network file system, NFS, is available on every managed ICS system. On Linux, NFS is managed by the automounter (autofs) service. Anything under /home, /extra/, or /auto is NFS and autofs managed. On Windows or Mac systems, the space is available via CIFS or SMB and mapped as a network drive. This is also included in /home/ and /extra/. | ||
| + | NFS Pros: | ||
| + | * Available everywhere | ||
| + | * Backups | ||
| + | * Hourly snapshots | ||
| + | * Access control | ||
| + | * Quotas | ||
| + | |||
| + | NFS cons: | ||
| + | * Only as fast as the network | ||
| + | * Expensive: RAID + Snapshots + Fast Network are not cheap | ||
| + | |||
| + | === Local File System === | ||
| + | Local file systems are backed by local physical media and are only available on filesystems they are physically attached to. Most systems have local storage exposed for all users in /scratch or /tmp. Some faculty and researchers purchase extra and that's made available via /srv/disk# or srv/nvme#. | ||
| + | |||
| + | LocalFS Pros: | ||
| + | * Cheap | ||
| + | * Fast | ||
| + | * Abundant | ||
| + | |||
| + | LocaFS Cons: | ||
| + | * Scratch only, no backup | ||
| + | * Localhost only. | ||
| + | * Available over network via slower protocols, fuse or sshfs | ||
| ==== Quotas ==== | ==== Quotas ==== | ||
| - | The following chart lists current quota limits for home directories that are on Tardigrade. There are no limits on the number of files a user may own. | + | The following chart lists current quota limits for home directories that are on Tardigrade. There are no limits on the number of files a user may own. Quota only counts what is in your /home/*username* directory. |
| | **Account Type** | **Quota** | | | **Account Type** | **Quota** | | ||
| Line 54: | Line 81: | ||
| | Visitors | TBD | | | Visitors | TBD | | ||
| - | \\ | + | === How much space am I using? === |
| + | Are you getting an over quota message but when running **df -h** it shows that there TBs of available space? | ||
| + | <code> | ||
| + | # df . -h | ||
| + | Filesystem Size Used Avail Use% Mounted on | ||
| + | tardigrade:/ugrad 99T 13T 86T 13% /net/tardigrade/ugrad | ||
| + | </code> | ||
| + | The command is returning the size of physical filesystem. Your quota is what is listed in the table above. If you would like to know how much space you're using, please run **du -sh /home/your_username**. This command could take a few minutes depending on how much data is in your home directory. | ||
| ==== Backup and Recovery==== | ==== Backup and Recovery==== | ||
