Using nearline storage: Difference between revisions

Using nearline storage (view source)

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 <FILE>: [...]: released archived, [...]
 </source>
+"HSM" stands for "hierarchical storage manager". If you wish to ensure that the file is brought in from tape, you can use
+ lfs hsm_restore <FILE>
+The difference with reading the file is that the restore would be implicitly done.
 == Using nearline == <!--T:3-->
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 * After a further period, the disk copy will be dropped, and the file will only be on tape (our policy is two tape copies: one local and one remote).  At this point, the file will be slow to read, since content must be recalled from tape.
 * When such a file is recalled, it returns to the second state.
-<!--T:23-->
-Thus, you may wish to inquire about the status of a nearline file:
- lfs hsm_state ~/nearline/def-mine/user/somefile
-("HSM" stands for "hierarchical storage manager".)  Normally, if you wish to use a file in Nearline, you can treat it as a normal file (just read/write it).  If you wish to ensure that the file is brought in from tape, you can also use
- lfs hsm_restore ~/nearline/def-mine/user/somefile
-The only difference is that reading the file does the restore implicitly.
 == Access == <!--T:6-->