Glossary – HP Integrity NonStop J-Series User Manual
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HP NonStop Storage Management Foundation User's Guide—523562-007
Glossary-1
Glossary
Audited Name Table (ANT). The Enscribe file maintained by each virtual disk process
mapping each logical (external) file name on that volume to its physical (internal) file
name.
catalog. A collection of files that maintains context for virtual disk processes, pools, or
$ZSMS.
direct file. A file that is not name-managed; its logical (external) name and physical
(internal) file are identical. Direct files can also be placed on physical disks in a storage
pool. See also
direct volume. A volume that is not in any pool. All files on a direct volume are direct files.
Disk Process 2 (DP2). The portion of the operating system software that performs read,
write, and lock operations on disk volumes. The disk process also implements
Enscribe and NonStop SQL/MP file types; creates TMF audit trail records; performs
logical REDO operations for Remote Duplicate Database Facility (RDF); and manages
disk space, disk controllers, and paths to the disks. This disk process provides
enhanced performance, throughput, recoverability, and reliability improvements in high-
volume, online transaction processing environments.
DOWN state. A process state in which a process is capable of supporting only informational
operations.
DP2. See
.
external name. The file name known and used by applications. For logically named files,
this is the logical name. For direct files, external name is the direct name.
format 1 file. Any file created on a system running a release version update (RVU)
preceding G06.00 or D46.00, or a file created on any newer RVU that is smaller than 2
GB minus 1 MB.
format 2 file. A large format file or a file that can contain larger partitions than a file created
on release version updates (RVUs) preceding G06.00 or D46.00. A format 2 file can
exceed the 2 GB minus 1 MB size limit of a format 1 file.
internal file name. The name by which a file is known to DP2. For a direct file, this is the
same as the file name. For a file that is name-managed by SMF, the physical file name
is on a subvolume whose name begins with ZYS (for logically named files) or ZYT (for
logical temporary files). See also
isolate. A request to SMF that no logically named files be placed on a particular physical
volume.