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PDS Member Management and Security with Fast Member Organizer FMO is a selectable unit of FASTPACK that Enhances PDSFAST's PDS and DASD management features with the archiving of unused members, automatic space reuse, the control of access to selected members and data sets, the recording of accesses and updates to selected members in SMF, and the automatic updating of LLA. DASD Space SavingsInstallations concerned about the rapidly increasing demands on DASD space or want to avoid the excessive overhead associated with PDSEs will appreciate the immediate and ongoing savings that FMO provides. Archiving reduces the size of PDSs and saves disk space. The benefits of such control are many. For example, automatically reusing wasted space in a PDS when a member is changed or added allows the PDS to grow in size more slowly, reduces the need for full compresses, and simplifies the management of PDSs that are in use for long periods of time and unavailable for normal compresses.User BenchmarkFor a benchmark, 850 members were added and 450 were deleted, at random, to a PDS allocated on a 3390 with a primary of 375 tracks and a secondary of 150 tracks. |
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Improved System PerformanceFMO can dramatically reduce DASD utilization by tracking member usage and archiving members that have been unused for a long period of time. Not only does this make previously used space available; but it improves overall system and individual job and TSO performance by having smaller PDS directories to be searched when locating a member and smaller data sets to be handled by system management utilities. For example, nightly backups that included a high percentage of inactive data before FMO archiving will, afterwards, be much faster.Access and Audit ControlFMO’s usage monitoring facilities allow an installation to track the “who, how, and when” of member accesses. This capability can be used to improve system performance, chargeback access to members (for vendor products), and maintain an audit trail of member references. FMO can also control accesses and updates to selected members and data sets, providing a level of security not normally available. As part of this control facility, FMO can optionally record in SMF, access and update information, as well as whether the access was permitted or denied, or it can issue a WTO to the Operator’s console. In addition, FMO can ensure immediate accessibility and data integrity for updated and newly added members of data sets managed by the Linklist Lookaside facility (LLA).Ease of UseFMO requires minimal overhead and no modifications to user data or programs. FMO does not require that an entirely new backup system be created, but instead fits in seamlessly with your existing data center backup and migration procedures. The archive files created by FMO are saved as standard PDSFAST (IEBCOPY-compatible) unload files at a user-specified ocation directly on tape or disk, in selectable SMS management groups that can be migrated by HSM. The names and locations of archived members are retained in the FMO Catalog. The member and directory space previously used by the inactive members is then made available either to other members in that PDS or to other data sets on the volume. If needed at a later date, archived members can easily be restored, using either the FMO Restore facility under ISPF, or PDSFAST itself.FMO Features:Archival of unused members
FMO OperationFMO consists of two main components: the FMO Supervisor and the FMO Agent.The FMO Supervisor is a continuously running task normally started at system IPL time. It tracks PDS member references and updates for selected data sets by intercepting BLDL (locate member) and STOW (update member) SVC calls. The FMO Supervisor maintains a Journal, which is updated as additional member references to the selected data sets are detected. The FMO Agent is a batch job that actually performs the member archive process, based on user-specified control statements and the information recorded by the Supervisor in the FMO Journal. For all members selected for Archive, the Agent will perform a PDSFAST-unload to a specified data set name, volume, unit, etc., and will then (optionally) delete the archived members and compress or reallocate the data set or change its directory size, thereby freeing up the member and directory space that was occupied by the inactive data. An Agent LISTJOURNAL request will list selected data sets in the FMO Journal. Information on archived members and their destination
data sets is saved in the FMO Archive Catalog. A subsequent Agent LISTCATALOG
request selecting either the original or archive data set will produce
a report showing the location of the archived data, allowing members to
be restored using the FMO Restore facility under ISPF or with PDSFAST
or IEBCOPY, if necessary. Archive data sets (i.e., data sets containing
archived members) that are created by the Agent can be specified with
unique DFSMS storage and/or management classes, allowing them to be handled
as desired by the installation.
Installation Hardware/Software RequirementsFMO can be installed in less than 10 minutes. No changes are required to the operating system. FMO can run in any IBM MVS environment.FMO is selectable unit of the FASTPACK suite of products:PDSFASTFASTVSAM FASTGENR FDSO FMO Software Engineering of America Inc., |
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