6.2. Planning for the HPSS 6.2 Upgrade
This section provides information necessary to plan the upgrade of an HPSS 4.5 or HPSS 5.1 system to HPSS 6.2. It is important that all planning information be reviewed carefully before performing the upgrade.
6.2.1. Metadata changes in HPSS 6.2
From 4.5 to 6.2:
•Encina's Structured File System (SFS) product is replaced by DB2 Universal Database (UDB) as the metadata database for HPSS.
•Migration policies are now either of type disk or tape, but not both.
•The ACLs internal to an nsobject record are now placed in the NSACL table.
•The NSTEXT record is no longer used to store names longer than 23 characters. The NSOBJECT name field is now long enough to handle the entire name of the object.
•NSOBJECT records that were marked as deleted but retained for reuse are not converted.
•Disk storage algorithms are improved to eliminate previous limitations of the number of storage segments in a single virtual volume. Part of the disk storage map metadata is now managed in memory rather than in metadata.
•The Bitfile Server, Storage Server, and Name Server servers for each subsystem is now merged into a single Core Server. This has generated a number of changes in metadata, mainly in the
•Cartridge metadata is now consolidated from multiple SFS files into one DB2 table.
•New AUTHZACL table. This table contains authorized interfaces to servers. The table allows a server to determine whether a client with a certain authorization mechanism (Unix or LDAP) may connect to its interface.
•Modification of DMG metadata. In support of the new HPSS RPC library: TCP port has been eliminated; Program and Version numbers to the DMG specific configuration have been added.
•Modification of DMG Fileset metadata. In support of new HPSS RPC library, elimination of TCP port and TCP hostname and addition of RPC endpoint information.
•Modification of Gatekeeper metadata. In support of new HPSS RPC library, change length of site policy pathname from 127 to 1023 characters.
•Modification of Location Server Policy metadata. In support of new HPSS RPC library, elimination of group name and addition of realm name. Change length of local site name from 31 to 255 characters.
•Modification of Mover Device metadata. In support of new SAN3P capabilities, addition of SanID to mover device configuration. Since new to HPSS 6.2, these will be set to 0 for all mover devices.
•NDCG metadata is now obsolete. The table is created, and the metadata is converted, but the table is renamed to PRE62_NDCG to prevent use.
HPSS Installation Guide | July 2008 |
Release 6.2 (Revision 2.0) | 180 |
