C1000-082 IBM Spectrum Protect V8.1.9 Administration Question and Answers

The journal engine service monitors changes to specified files and directories and records information about the changes in a journal database. When a backup is performed on a file system that is being monitored by the journal engine service, IBM Spectrum Protect uses the information in the journal database to perform a journal-based backup. This allows IBM Spectrum Protect to quickly identify and back up only the files that have changed since the last backup, reducing the amount of data that needs to be backed up and speeding up the backup process.

According to IBM Spectrum Protect V8.1.9 documentation1, journal-based backup is an alternate method of backup that uses a change journal maintained by the IBM Spectrum Protect journal service process. To support journal-based backup, you must configure the journal engine service using the dsmcutil command or the client GUI setup wizard.

The incremental command backs up all new or changed data in the locations that you specify, unless you exclude them from backup services2. If the journal engine service is installed and running when the incremental command is used for a backup, it performs a journal-based backup on file systems that are being monitored by the journal engine service1.

This means that, by default, files from different clients are grouped together in storage pool volumes to optimize space utilization. This information is available in the IBM Spectrum Protect for AIX [1]: Administrator's Reference, which is one of the official documentation resources for this product.

https://www.ibm.com/docs/en/spectrum-protect/8.1.14?topic=storage-optimizing-operations-by-enabling-collocation-client-files

According to IBM’s documentation1, server-side deduplication is the process of removing redundant data during a backup operation on the server system. Server-side deduplication is especially effective when you want to conserve disk space on the server storage pools.

To optimize the performance of server-side deduplication, two items that should be examined are:

• The storage for the database provides sufficient IOPS. IBM recommends using a high-performance disk for the database and ensuring that it has a minimum capability of 3000 IOPS1.
• The server has sufficient memory. IBM recommends allocating at least 1 GB of memory for each TB of data that is backed up each day2.

According to the IBM Spectrum Protect Plus documentation1, it is a data protection solution that provides near-instant recovery, replication, retention management, and reuse for virtual machines, databases, and applications backups in hybrid multicloud environments.

https://www.redbooks.ibm.com/abstracts/redp5532.html

The RANDOMIZATION parameter sets randomized start times within the startup window of each schedule for clients by using the client-polling scheduling mode1. A startup window is the start time and duration during which a schedule must be initiated. The RANDOMIZATION parameter does not affect other scheduling modes such as server-polling, client-prompted, or server-prompted.

https://www.ibm.com/docs/en/spectrum-protect/8.1.2?topic=commands-set-randomize-set-randomization-scheduled-start-times

According to IBM Spectrum Protect V8.1.9 documentation1, a system administrator has the highest level of authority in IBM Spectrum Protect. A system administrator can issue any administrative command and has authority to grant or revoke privileges for other administrators.

The privilege class for a system administrator is SYstem1. The other privilege classes such as root, administrator, or superuser are not valid for IBM Spectrum Protect.

In IBM Spectrum Protect (formerly known as Tivoli Storage Manager), the system privilege class can perform all administrative functions. The system privilege class includes the following permissions:

• SYSOP: System operations
• AUDIT: Auditing operations
• SECURITY: Security operations
• NODEADDP: Add nodes
• NODEDELP: Delete nodes
• MGMTCLAS: Management class operations
• DEVCLASS: Device class operations
• STGPOOL: Storage pool operations
• LIBRARY: Library operations
• QUERY: Query operations
• BACKUP: Backup and archive operations
• RESTORE: Restore operations
• ARCHIVE: Archive operations
• RESTOREVM: Restore virtual machine operations
• PROXY: Proxy operations