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NetBackup™ Deduplication Guide

Last Published: 2023-06-18

Product(s): NetBackup (10.2.0.1)

Introducing the NetBackup media server deduplication option
1. About the NetBackup deduplication options
Quick start
1. About client-side deduplication
2. About the media server deduplication (MSDP) node cloud tier
  1. Configuring the MSDP node cloud tier
3. About Auto Image Replication (A.I.R.)
Planning your deployment
1. Planning your MSDP deployment
2. NetBackup naming conventions
3. About MSDP deduplication nodes
4. About the NetBackup deduplication destinations
5. About MSDP storage capacity
6. About MSDP storage and connectivity requirements
  1. Fibre Channel and iSCSI comparison for MSDP
7. About NetBackup media server deduplication
8. About NetBackup Client Direct deduplication
  1. About MSDP client deduplication requirements and limitations
9. About MSDP remote office client deduplication
  1. About MSDP remote client data security
  2. About remote client backup scheduling
10. About the NetBackup Deduplication Engine credentials
11. About the network interface for MSDP
12. About MSDP port usage
13. About MSDP optimized synthetic backups
14. About MSDP and SAN Client
15. About MSDP optimized duplication and replication
16. About MSDP performance
  1. How file size may affect the MSDP deduplication rate
17. About MSDP stream handlers
  1. Oracle stream handler
  2. Microsoft SQL Server stream handler
18. MSDP deployment best practices
Provisioning the storage
1. About provisioning the storage for MSDP
2. Do not modify MSDP storage directories and files
3. About volume management for NetBackup MSDP
Licensing deduplication
1. About the MSDP license
2. Licensing NetBackup MSDP
Configuring deduplication
1. Configuring MSDP server-side deduplication
2. Configuring MSDP client-side deduplication
3. About the MSDP Deduplication Multi-Threaded Agent
4. Configuring the Deduplication Multi-Threaded Agent behavior
  1. MSDP mtstrm.conf file parameters
5. Configuring deduplication plug-in interaction with the Multi-Threaded Agent
6. About MSDP fingerprinting
7. About the MSDP fingerprint cache
8. Configuring the MSDP fingerprint cache behavior
  1. MSDP fingerprint cache behavior options
9. About seeding the MSDP fingerprint cache for remote client deduplication
10. Configuring MSDP fingerprint cache seeding on the client
11. Configuring MSDP fingerprint cache seeding on the storage server
  1. NetBackup seedutil options
12. About sampling and predictive cache
13. Enabling 400 TB support for MSDP
14. About MSDP Encryption using NetBackup KMS service
  1. Upgrading KMS for MSDP
  2. Enabled KMS encryption for Local LSU
15. About MSDP Encryption using external KMS server
16. Configuring a storage server for a Media Server Deduplication Pool
  1. MSDP storage path properties
  2. MSDP network interface properties
17. About disk pools for NetBackup deduplication
18. Configuring a disk pool for deduplication
  1. Media Server Deduplication Pool properties
19. Creating the data directories for 400 TB MSDP support
20. Adding volumes to a 400 TB Media Server Deduplication Pool
21. Configuring a Media Server Deduplication Pool storage unit
  1. Media Server Deduplication Pool storage unit properties
  2. MSDP storage unit recommendations
22. Configuring client attributes for MSDP client-side deduplication
23. Disabling MSDP client-side deduplication for a client
24. About MSDP compression
25. About MSDP encryption
26. MSDP compression and encryption settings matrix
27. Configuring encryption for MSDP backups
28. Configuring encryption for MSDP optimized duplication and replication
29. About the rolling data conversion mechanism for MSDP
30. Modes of rolling data conversion
31. MSDP encryption behavior and compatibilities
32. Configuring optimized synthetic backups for MSDP
33. About a separate network path for MSDP duplication and replication
34. Configuring a separate network path for MSDP duplication and replication
35. About MSDP optimized duplication within the same domain
  1. About the media servers for MSDP optimized duplication within the same domain
    1. About MSDP push duplication within the same domain
    2. About MSDP pull duplication within the same domain
36. Configuring MSDP optimized duplication within the same NetBackup domain
  1. Configuring NetBackup optimized duplication or replication behavior
    1. Setting NetBackup configuration options by using the command line
37. About MSDP replication to a different domain
38. Configuring MSDP replication to a different NetBackup domain
  1. About NetBackup Auto Image Replication
  2. About trusted primary servers for Auto Image Replication
  3. About the certificate to be used for adding a trusted primary server
  4. Adding a trusted primary server using a NetBackup CA-signed (host ID-based) certificate
  5. Adding a trusted primary server using external CA-signed certificate
  6. Removing a trusted primary server
  7. Enabling NetBackup clustered primary server inter-node authentication
  8. Configuring NetBackup CA and NetBackup host ID-based certificate for secure communication between the source and the target MSDP storage servers
  9. Configuring external CA for secure communication between the source MSDP storage server and the target MSDP storage server
  10. Configuring a target for MSDP replication to a remote domain
    1. Target options for MSDP replication
    2. Configuring a NetBackup Deduplication Engine user with limited permissions for Auto Image Replication
39. About configuring MSDP optimized duplication and replication bandwidth
40. About performance tuning of optimized duplication and replication for MSDP cloud
41. About storage lifecycle policies
42. About the storage lifecycle policies required for Auto Image Replication
43. Creating a storage lifecycle policy
  1. Storage Lifecycle Policy dialog box settings
44. About MSDP backup policy configuration
45. Creating a backup policy
46. Resilient Network properties
  1. Resilient connection resource usage
47. Specifying resilient connections
48. Adding an MSDP load balancing server
49. About variable-length deduplication on NetBackup clients
50. Managing the variable-length deduplication using the cacontrol command-line utility
51. About the MSDP pd.conf configuration file
52. Editing the MSDP pd.conf file
  1. MSDP pd.conf file parameters
53. About the MSDP contentrouter.cfg file
54. About saving the MSDP storage server configuration
55. Saving the MSDP storage server configuration
56. Editing an MSDP storage server configuration file
57. Setting the MSDP storage server configuration
58. About the MSDP host configuration file
59. Deleting an MSDP host configuration file
60. Resetting the MSDP registry
61. About protecting the MSDP catalog
  1. About the MSDP shadow catalog
  2. About the MSDP catalog backup policy
62. Changing the MSDP shadow catalog path
63. Changing the MSDP shadow catalog schedule
64. Changing the number of MSDP catalog shadow copies
65. Configuring an MSDP catalog backup
  1. MSDP drcontrol options
66. Updating an MSDP catalog backup policy
67. About MSDP FIPS compliance
68. Configuring the NetBackup client-side deduplication to support multiple interfaces of MSDP
69. About MSDP multi-domain support
70. About MSDP application user support
71. About MSDP mutli-domain VLAN Support
72. About NetBackup WORM storage support for immutable and indelible data
  1. About the NetBackup command line options to configure immutable and indelible data
MSDP cloud support
1. About MSDP cloud support
  1. Operating system requirement for configuration
  2. Limitations
2. Create a Media Server Deduplication Pool (MSDP) storage server in the NetBackup web UI
3. Creating a cloud storage unit
4. Updating cloud credentials for a cloud LSU
5. Updating encryption configurations for a cloud LSU
6. Deleting a cloud LSU
7. Backup data to cloud by using cloud LSU
8. Duplicate data cloud by using cloud LSU
9. Configuring AIR to use cloud LSU
10. About backward compatibility support
11. About the configuration items in cloud.json, contentrouter.cfg, and spa.cfg
12. Cloud space reclamation
  1. Configuring the container aging
  2. Configuring the cloud compaction
13. About the tool updates for cloud support
14. About the disaster recovery for cloud LSU
  1. Common disaster recovery steps
  2. Disaster recovery for cloud LSU in Flex Scale
15. About Image Sharing using MSDP cloud
  1. Things to consider before you use image sharing to convert VM image to VHD in Azure
  2. Converting the VM image to VHD in Azure
16. About restore from a backup in Microsoft Azure Archive
17. About Veritas Alta Recovery Vault Azure
18. Configuring Veritas Alta Recovery Vault Azure and Azure Government
19. Configuring Veritas Alta Recovery Vault Azure and Azure Government using the CLI
20. Migrating from standard authentication to token-based authentication for Recovery Vault
21. About MSDP cloud immutable (WORM) storage support
  1. About MSDP cloud admin tool
  2. About immutable object support for AWS S3
  3. About immutable object support for AWS S3 compatible platforms
  4. About immutable storage support for Azure blob storage
    1. Creating an Azure cloud immutable storage unit using the Web UI
    2. Managing an Azure cloud immutable volume using msdpcldutil tool
  5. About immutable storage support for Google Cloud Storage
    1. Creating a Google cloud immutable storage using the Web UI
    2. Managing a Google cloud immutable storage using msdpcldutil tool
  6. About using the cloud immutable storage in a cluster environment
  7. Troubleshooting the error when the bucket is created without msdpcldutil
  8. Deleting the immutable image with the enterprise mode
  9. Refreshing the immutable cloud volume retention range value in the web UI
  10. Deleting the S3 object permanently
22. About instant access for object storage in cloud
S3 Interface for MSDP
1. About S3 interface for MSDP
2. Prerequisites for MSDP build-your-own (BYO) server
3. Configuring S3 interface for MSDP on MSDP build-your-own (BYO) server
  1. Changing the certificate in S3 server
4. Identity and Access Management (IAM) for S3 interface for MSDP
5. S3 APIs for S3 interface for MSDP
6. Disaster recovery in S3 interface for MSDP
7. Limitations in S3 interface for MSDP
8. Logging and troubleshooting
9. Best practices
Monitoring deduplication activity
1. Monitoring the MSDP deduplication and compression rates
2. Viewing MSDP job details
  1. MSDP job details
3. About MSDP storage capacity and usage reporting
4. About MSDP container files
5. Viewing storage usage within MSDP container files
6. About monitoring MSDP processes
7. Reporting on Auto Image Replication jobs
Managing deduplication
1. Managing MSDP servers
2. Managing NetBackup Deduplication Engine credentials
3. Managing Media Server Deduplication Pools
4. Deleting backup images
5. About MSDP queue processing
6. Processing the MSDP transaction queue manually
7. About MSDP data integrity checking
8. Configuring MSDP data integrity checking behavior
  1. MSDP data integrity checking configuration parameters
9. About managing MSDP storage read performance
10. About MSDP storage rebasing
  1. MSDP server-side rebasing parameters
11. About the MSDP data removal process
12. Resizing the MSDP storage partition
13. How MSDP restores work
14. Configuring MSDP restores directly to a client
15. About restoring files at a remote site
16. About restoring from a backup at a target primary domain
17. Specifying the restore server
Recovering MSDP
1. About recovering the MSDP catalog
2. Restoring the MSDP catalog from a shadow copy
3. Recovering from an MSDP storage server disk failure
4. Recovering from an MSDP storage server failure
5. Recovering the MSDP storage server after NetBackup catalog recovery
Replacing MSDP hosts
1. Replacing the MSDP storage server host computer
Uninstalling MSDP
1. About uninstalling MSDP
2. Deactivating MSDP
Deduplication architecture
1. MSDP server components
2. Media server deduplication backup process
3. MSDP client components
4. MSDP client - side deduplication backup process
Configuring and using universal shares
1. About universal shares
2. Configuring and using an MSDP build-your-own (BYO) server for universal shares
3. MSDP build-your-own (BYO) server prerequisites and hardware requirements to configure universal shares
4. Configuring universal share user authentication
5. Mounting a universal share created from the NetBackup web UI
6. About universal share self-service recovery
7. Performing a universal share self-service recovery
8. Using the ingest mode
  1. Using the ingest mode to take a snapshot over NFS or SMB
  2. Using the ingest mode to run a policy using NFS or SMB
9. About universal shares with object store
10. Enabling a universal share with object store
  1. Enabling instant access with object storage
11. Disaster recovery for a universal share
12. Changing the number of vpfsd instances
13. Enabling variable-length deduplication (VLD) algorithm for universal shares
14. Upgrading to NetBackup 10.2.0.1
Configuring isolated recovery environment (IRE)
1. Requirements
2. Configuring the network isolation
3. Configuring an isolated recovery environment on a NetBackup BYO media server
4. Managing an isolated recovery environment on a NetBackup BYO media server
5. Configuring AIR for replicating backup images from production environment to IRE BYO environment
6. Configuring an isolated recovery environment on a WORM storage server
7. Managing an isolated recovery environment on a WORM storage server
8. Configuring data transmission between a production environment and an IRE WORM storage server
Using the NetBackup Deduplication Shell
1. About the NetBackup Deduplication Shell
2. Managing users from the deduplication shell
3. Managing VLAN interfaces from the deduplication shell
4. Managing the retention policy on a WORM storage server
5. Managing images with a retention lock on a WORM storage server
6. Auditing WORM retention changes
7. Protecting the NetBackup catalog from the deduplication shell
8. Managing certificates from the deduplication shell
9. Managing FIPS mode from the deduplication shell
10. Encrypting backups from the deduplication shell
11. Tuning the MSDP configuration from the deduplication shell
12. Setting the MSDP log level from the deduplication shell
13. Managing NetBackup services from the deduplication shell
14. Monitoring and troubleshooting NetBackup services from the deduplication shell
15. Managing S3 service from the deduplication shell
Troubleshooting
1. About unified logging
  1. About using the vxlogview command to view unified logs
  2. Examples of using vxlogview to view unified logs
2. About legacy logging
  1. Creating NetBackup log file directories for MSDP
3. NetBackup MSDP log files
4. Troubleshooting MSDP installation issues
  1. MSDP installation on SUSE Linux fails
5. Troubleshooting MSDP configuration issues
6. Troubleshooting MSDP operational issues
7. Viewing MSDP disk errors and events
8. MSDP event codes and messages
9. Unable to obtain the administrator password to use an AWS EC2 instance that has a Windows OS
10. Trouble shooting multi-domain issues
11. Troubleshooting the cloud compaction error messages
Appendix A. Migrating to MSDP storage
1. Migrating from another storage type to MSDP
Appendix B. Migrating from Cloud Catalyst to MSDP direct cloud tiering
1. About migration from Cloud Catalyst to MSDP direct cloud tiering
2. About Cloud Catalyst migration strategies
3. About direct migration from Cloud Catalyst to MSDP direct cloud tiering
4. About postmigration configuration and cleanup
5. About the Cloud Catalyst migration -dryrun option
6. About Cloud Catalyst migration cacontrol options
7. Reverting back to Cloud Catalyst from a successful migration
8. Reverting back to Cloud Catalyst from a failed migration
Appendix C. Encryption Crawler
1. About the Encryption Crawler
2. About the two modes of the Encryption Crawler
3. Managing the Encryption Crawler
4. Advanced options
5. Tuning options
6. Encrypting the data
7. Command usage example outputs
Index

MSDP job details

The NetBackup web UI > Activity monitor > Job ID shows the details of a deduplication job. The details depend on whether the job is media server deduplication or client-side deduplication job.

Media server deduplication job details

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%

Client-side deduplication job details

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 True Image Restore 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%)

Field descriptions

Table: MSDP activity field descriptions describes the deduplication activity fields.

Table: MSDP activity field descriptions

Field	Description
`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.
`cache hits`	The percentage of data segments in the backup that is represented in the local fingerprint cache. The deduplication plug-in did not have to query the database about those segments If the `pd.conf` file FP_CACHE_LOCAL parameter is set to 0 on the storage, the `cache hits` output is not included for the jobs that run on the storage server. See MSDP pd.conf file parameters.
`CR sent`	The amount of data that is sent from the deduplication plug-in to the component that stores the data. In NetBackup, the NetBackup Deduplication Engine stores the data. 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: On a NetBackup client that deduplicates its own data (client-side deduplication). On a fingerprinting media server that deduplicates the data. The deduplication plug-in on the fingerprinting server sends the data to the storage server, which writes it to a Media Server Deduplication Pool.
`CR sent over FC`	The amount of data that is sent from the deduplication plug-in over Fibre Channel to the component that stores the data. In NetBackup, the NetBackup Deduplication Engine stores the data.
`dedup`	The percentage of data that was stored already. That data is not stored again.
`multi-threaded stream used`	Indicates that the Deduplication Multi-Threaded Agent processed the backup.
`PDDO stats`	Indicates that the job details are for storage on the following destinations: Media Server Deduplication Pool
`rebased`	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. See About MSDP storage rebasing.
`scanned`	The amount of data that the deduplication plug-in scanned.
`Using OpenStorage client direct to restore...`	Indicates that the restore travels over the client-direct data path and does not use NetBackup media server components to process the data.

Descriptions of the job details that are not related to deduplication are in a different topic.

More Information

About the MSDP Deduplication Multi-Threaded Agent