Differences

This shows you the differences between two versions of the page.

--- accounts:ics_home_directory [2022/03/08 14:35]
vipada [Quotas]
+++ accounts:ics_home_directory [2024/07/16 10:58] (current)
relkhou1 [Storage System]
@@ Line 40: / Line 40: @@
   * [[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 ====
-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**  |