Veritas NetBackup™ Deduplication Guide
- Introducing the NetBackup media server deduplication option
- Planning your deployment
- About MSDP storage and connectivity requirements
- About NetBackup media server deduplication
- About NetBackup Client Direct deduplication
- About MSDP remote office client deduplication
- About MSDP performance
- MSDP deployment best practices
- Provisioning the storage
- Licensing deduplication
- Configuring deduplication
- Configuring the Deduplication Multi-Threaded Agent behavior
- Configuring the MSDP fingerprint cache behavior
- Configuring MSDP fingerprint cache seeding on the storage server
- About MSDP Encryption using KMS service
- Configuring a storage server for a Media Server Deduplication Pool
- Configuring a disk pool for deduplication
- Configuring a Media Server Deduplication Pool storage unit
- About MSDP optimized duplication within the same domain
- Configuring MSDP optimized duplication within the same NetBackup domain
- Configuring MSDP replication to a different NetBackup domain
- About NetBackup Auto Image Replication
- Configuring a target for MSDP replication to a remote domain
- Creating a storage lifecycle policy
- Resilient Network properties
- Editing the MSDP pd.conf file
- About protecting the MSDP catalog
- Configuring an MSDP catalog backup
- Configuring deduplication to the cloud with NetBackup Cloud Catalyst
- Using NetBackup Cloud Catalyst to upload deduplicated data to the cloud
- Configuring a Cloud Catalyst storage server for deduplication to the cloud
- Monitoring deduplication activity
- Viewing MSDP job details
- Managing deduplication
- Managing MSDP servers
- Managing NetBackup Deduplication Engine credentials
- Managing Media Server Deduplication Pools
- Changing a Media Server Deduplication Pool properties
- Configuring MSDP data integrity checking behavior
- About MSDP storage rebasing
- Managing MSDP servers
- Recovering MSDP
- Replacing MSDP hosts
- Uninstalling MSDP
- Deduplication architecture
- About unified logging
- About legacy logging
- Troubleshooting MSDP installation issues
- Troubleshooting MSDP configuration issues
- Troubleshooting MSDP operational issues
- Troubleshooting Cloud Catalyst issues
- Cloud Catalyst logs
- Problems encountered while using the Cloud Storage Server Configuration Wizard
- Disk pool problems
- Problems during cloud storage server configuration
- Cloud Catalyst troubleshooting tools
- Appendix A. Migrating to MSDP storage
MSDP job details
The NetBackup Administration Console Job Details dialog box shows the details of a deduplication job. The details depend on whether the job is media server deduplication or client-side deduplication job.
For media server deduplication, the Detailed Status tab shows the deduplication rate on the server that performed the deduplication. The following job details excerpt shows details for a client for which MSDP_Server.example.com deduplicated the data (the dedup field shows the deduplication rate and the compression field shows the storage space that is saved by compression):
LOG 1551428319 4 Info MSDP_Server.example.com 27726 StorageServer=PureDisk:MSDP_Server.example.com; Report=PDDO Stats (multi-threaded stream used) for (MSDP_Server.example.com): scanned: 105098346 KB, CR sent: 2095410 KB, CR sent over FC: 0 KB, dedup: 98.0%, cache hits: 337282 (41.0%), where dedup space saving:89.7%, compression space saving:8.3%
For client-side deduplication jobs, the Detailed Status tab shows two deduplication rates. The first deduplication rate is always for the client data. The second deduplication rate is for the metadata (disk image header and information (if applicable)). That information is always deduplicated on a server; typically, deduplication rates for that information are zero or very low.
Additionally, for the client-side deduplication, the first Info line now displays the dedupe and compression values separately
The following job details example excerpt shows the two rates. The 1/8/2013 11:58:09 PM entry is for the client data; the 1/8/2013 11:58:19 PM entry is for the metadata.
1/8/2013 11:54:21 PM - Info MSDP_Server.example.com(pid=2220) Using OpenStorage client direct to backup from client Client_B.example.com to MSDP_Server.example.com 1/8/2013 11:58:09 PM - Info MSDP_Server.example.com(pid=2220) StorageServer=PureDisk:MSDP_Server.example.com; Report=PDDO Stats for (MSDP_Server.example.com: scanned: 110028 KB, CR sent: 16654 KB, CR sent over FC: 0 KB, dedup: 84.9%, cache disabled, where dedup space saving:3.8%, compression space saving:81.1% 1/8/2013 11:58:09 PM - Info MSDP_Server.example.com(pid=2220) Using the media server to write NBU data for backup Client_B_1254987197.example.com to MSDP_Server.example.com 1/8/2013 11:58:19 PM - Info MSDP_Server.example.com(pid=2220) StorageServer=PureDisk:MSDP_Server.example.com; Report=PDDO Stats for (MSDP_Server.example.com: scanned: 17161 KB, CR sent: 17170 KB, dedup: 0.0%, cache hits: 0 (0.0%)
Table: MSDP activity field descriptions describes the deduplication activity fields.
Table: MSDP activity field descriptions
Dedup space saving
The percentage of space that is saved by data deduplication (data is not written again).
Compression space saving
The percentage of space that is saved because the deduplication engine compressed some data before writing it to storage.
If the storage server deduplicates the data, it does not travel over the network. The deduplicated data travels over the network when the deduplication plug-in runs on a computer other than the storage server, as follows:
CR sent over FC
multi-threaded stream used
Indicates that the Deduplication Multi-Threaded Agent processed the backup.
Indicates that the job details are for storage on the following destinations:
The percentage of segments that were rebased (that is, defragmented) during the backup. Those segments had poor data locality.
NetBackup reports backup job completion only after backup rebasing is completed.
Using OpenStorage client direct to restore...