MAM | |
Management | An |
Console (MC) | configuration, operation, monitoring, and management tasks in the FSE implementation. |
| Management Console consists of two separate modules: Management Console server and |
| Management Console client. |
Management | An FSE daemon (service), responsible for accepting, handling, and executing requests for user |
Interface (MIF) | actions, issued through the FSE |
| the administrative jobs. The Management Interface process name is |
media duplication | A process that creates an exact copy of an FSE tape medium. In case of emergency, a medium |
| duplicate can directly replace the original. |
media pool | A common storage for the migrated HSM file system data. It groups FSE media of the same |
(FSE media pool) | type into a logical unit, which is tracked as a group. FSE media inside the same FSE media |
| pool share such characteristics as number of medium volumes (tape partitions), system volume |
| feature, capacity of medium volumes, and so on. Media pool types are: regular, WORM, and |
| backup. Each FSE partition needs at least one regular FSE media pool assigned to it. The same |
| media pool cannot be assigned to multiple partitions. |
medium | A |
(FSE medium) | volumes are stored on tape partitions, in case of tape medium, or in file system subdirectories, |
| in case of disk medium. Tape medium is further divided into tape partitions and disk medium is |
| divided into subdirectories. Tape partitions store FSE medium volumes on a tape medium and |
| subdirectories store FSE medium volumes on a disk medium. FSE media represent the |
| secondary storage space in an FSE implementation. See also ”disk medium (FSE disk |
| medium)”. |
Medium Auxiliary | A memory chip integrated into magnetic tapes of the LTO Ultrium family, designed to improve |
Memory (MAM) | tape performance. FSE uses Medium Auxiliary Memory in LTO Ultrium and LTO Ultrium WORM |
| medium to store information about the medium, its volumes, current position of the tape, and so |
| on, thus reducing the access time when searching for requested data on the medium. |
medium volume A physical partition on an FSE medium, with its own volume header. There are two types of (FSE medium volume) medium volumes: data volume and system volume. Data volumes store migrated file data, while
system volumes store redundant copies of Fast Recovery Information from all data volumes on the medium. LTO media can have a single data volume and no system volume.
migration candidate An online, dirty file that is scheduled for migration.
migration candidate A list of files that were changed and have passed a certain period of time defined by the
listmigration policy, which are waiting for migration. The list is maintained by the Hierarchical Storage Manager.
migration policy | A set of rules by which the migration jobs for files on an HSM file system are initiated. |
| Configuration parameters for the respective policy are specified in the FSE partition |
| configuration file. Each FSE partition has its own migration policy. |
migration retention | A period of time during which a migrated file is kept online before it is released. See also |
time |
migration, migration A process, executed by the Partition Manager, that copies the file contents from the HSM file
jobsystem to the FSE media. When the process is completed, the file entries of the migrated files are moved from the migration candidate list to the release candidate list.
Name Space Catalog A part of the File System Catalog. NSC includes metadata of files on an HSM file system, such
(NSC)as directory structure, standard attributes, ownership (on Linux platform), and ACL (Access Control List) and Alternate Data Streams (on Windows platform). This metadata enables recovery of an HSM file system. See also ”File System Catalog (FSC)”.
HP StorageWorks File System Extender Software installation guide for Linux 83