PowerProtect: Cyber Recovery - CyberSense Analyze operation fails to use DD Boost optimized diff if NFSv4 is disabled

Summary: CyberSense Analyze operation fails to use DD Boost optimized diff for supported workloads on DDOS < 7.9 if NFSv4 is disabled. The base requirement is that NFS v4 is set as a priority. When running DDOS >= 7.9, NFS v4 is not required. ...

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Instructions

For optimized diff API to work it requires that you use a minimum of DDOS 7.7.x. When running DDOS >= 7.7.x and < 7.9.0, you must ensure that NFS v4 is set as a priority. If running DDOS >= 7.9.0, NFS v4 is not required. Other components in the vault such as (PowerProtect Data Manager) may require NFS v3 to be running (see KB-191465). To set NFS v4 as priority and allow NFS v3 as well, follow these steps:

1. Change the following Data Domain NFS settings:

nfs enable version 3:4
nfs option set nfs4-idmap-out-numeric always
nfs option set default-server-version 3:4
nfs option set default-export-version 3:4

2. Run the following to insure that all of the settings are correct.

nfs option show all

Example:

sysadmin@xxxxxxxx# nfs option show all
Option                                       Value
---------------------------------            --------------
default-export-version                       3:4
default-server-version                       3:4
nfs4-grace-period                            30
nfs4-lease-interval                          300
mountd-port                                  2052
nfs4-port                                    2049
nfs3-port                                    2049
nfs4-domain                                  xxxxx.com
nfs4-idmap-out-numeric                       always
nfs4-idmap-active-directory                  disabled
nfs4-acls                                    disabled
default-root-squash                          enabled
force-minimum-root-squash-default            disabled
report-mtree-quota                           disabled
---------------------------------            --------------

3. Run the following to insure NFSv3 and NFSv4 are running.

sysadmin@xxxxxx# nfs status
The NFS system is currently active and running.
Total number of NFS requests handled = 58515008.
NFS server version(s) 3:4 enabled.


Note:

PPDM will also require that you the following ddboost users with the following privileges set up on the Data Domain and in CyberSense:

  • admin
  • user
  • none

Additional Information

When using PPDM in the vault with DDOS 7.7 and below NFS v4 will need to be the default for DD Boost optimized diff to work.  If you are in a recovery scenario the NFS default will need to be switch to NFS v3 for the recovery.  When the recovery is completed it will need to be switched back to NFS v4.
Article Properties
Article Number: 000198370
Article Type: How To
Last Modified: 27 Jan 2026
Version:  9
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.