IBM HPSS manual Drive Pools, FTP Enhancement, Mkhpss Enhancement, 15. DB2 Monitoring

1.1.12. Drive Pools

HPSS provides HPSS end clients the ability to direct tape read I/O requests to a predefined group of tape drives referred to as a Drive Pool. This ability helps HPSS administrators manage tape drive scheduling and thus availability. For more information, please refer to Section 7.3: Drive Pools of the HPSS Management Guide.

1.1.13. FTP Enhancement

•FTP application mode: FTP can be compiled as either a 32-bit or a 64-bit application, by setting the BIT64_SUPPORT flag on or off in the Makefile.macros file, when building with the HPSS FTP source extracted with "build-ftp" option. The 64-bit Kerberos libraries will be required to support Kerberos authentication.

•PFTP client is now supported on Solaris 10 (Intel/AMD only).

1.1.14. mkhpss Enhancement

A new option is provided by mkhpss to configure the DB2 log mirroring capability to better protect the DB2 transaction log files. DB2 log mirroring allows the database to write an identical second copy of log files to a different path. The DB2 log files are essential in protecting a database and enable transactions occurring after a database backup to be recovered. Loss of the DB2 log files can result in significant impact to the operation of the system, extensive downtime, and potential loss of data. It is vital that DB2 log files be stored on highly reliable disk systems. In addition, DB2 log mirroring must be used to protect the DB2 log files on two separate disk systems. The disk systems must also be protected using RAID1 or RAID5 configurations. This mkhpss enhancement can only be used for new HPSS installations. For existing sites, please consult with your HPSS Support Representative for assistance.

1.1.15. DB2 Monitoring

A new feature to have the HPSS DB2 Log Monitor periodically checks the DB2 transaction log files to make sure that the primary and mirror logs are congruent and performing normally. It also scans the DB2 diagnostic log for indications of problem with the DB2 log files. For each identified problem, it will issue an HPSS alarm and indicate the path of the diagnostic log and the line number where the error is reported. The administrator should then open the DB2 diagnostics file and examine the reported problem in detail.

1.1.16. File Family enhancements

The number of allowed file families is increased to 4,294,967,295. In addition, authorized callers can assign the File Family ID of a file via the hpss_FileSetAttributes Client API function, independently of the underlying fileset.

1.1.17. SSM Configuration Files Consolidation

The SSM configuration files ssm_krb5.conf and ssm_unix.conf have been consolidated into a single configuration file called ssm.conf. Users may continue using their existing configuration file by specifying the "-m" option to the hpssadm.pl or hpssgui.pl script, or they may rename their existing configuration file to ssm.conf. For environments with multiple authentication mechanisms, it may be desirable to maintain multiple configuration files.

HPSS Installation Guide	July 2008
Release 6.2 (Revision 2.0)	17