Differential incremental backs up more data than full

Question

Hi!I have an environment with NetBackup server 7.7.2 on SLES 12 SP1 and about 35 clients.All clients are VMs running on VMware 6.0 and there are different OS running on them but most are Windows Server. There are also SLES 11, Oracle Linux 6.4 and some others.There are two main policies: one of them stores the backups in a disk unit (in the NetBackup server) to make staging to tape later, and the other one stores directly in tape (TS3100). Both policies are VMware type and the VMs backed up by one are not backed up by the other policy.So here comes the problem (idk if it's really a problem but I want to understand if it's not):The differential incremental backups always bring more or slightly less&nbsp;data than full backups.It doesn't make much sense to me because I think differential incremental backup should only transfer the changed files (blocks if we talk about the .vmdk, right?), and there are two VMs (Windows, one in disk and one in tape policy) that makes differential incremental correctly, as you can see in the screenshot.So I want to know if this is a normal behaviour for VMware policies, a bug, bad config or something.Regards.&nbsp;

marianne · Accepted Answer

Have a look at this TN:
VMware Backups with Block Level Incremental or Changed Block Tracking can return incorrect changed sectors in ESXi 6.0
https://www.veritas.com/support/en_US/article.100000460

rb-infinitely · Answer

Please post the output of&nbsp;bppllist &lt;policy-name&gt; -L

carloslb2 · Answer

Here:bppllist VMWARE30D -LPolicy Name:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; VMWARE30DOptions:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0x0template:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; FALSEaudit_reason:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ?Names:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (none)Policy Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; VMware (40)Active:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; yesEffective date:&nbsp;&nbsp;&nbsp; 11/18/2016 11:00:00File Restore Raw:&nbsp; yesBlock Incremental: yesApplication Consistent:&nbsp; yesMult. Data Stream: noPerform Snapshot Backup:&nbsp;&nbsp; yesSnapshot Method:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; VMware_v2Snapshot Method Arguments: file_system_optimization=1,rTO=0,snapact=2,drive_selection=0,Virtual_machine_backup=2,enable_vCloud=0,multi_org=0,rHz=10,rLim=10,nameuse=1,disable_quiesce=1,ignore_irvm=1,exclude_swap=1,skipnodisk=0,tags_unset=0,post_events=1,trantype=hotadd:nbd:nbdssl:sanPerform Offhost Backup:&nbsp;&nbsp;&nbsp; yesBackup Copy:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0Use Data Mover:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; noData Mover Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2Use Alternate Client:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; noAlternate Client Name:&nbsp;&nbsp;&nbsp;&nbsp; MEDIA_SERVERUse Virtual Machine:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1Hyper-V Server Name:&nbsp;&nbsp;&nbsp;&nbsp; (none)Enable Instant Recovery:&nbsp;&nbsp; noPolicy Priority:&nbsp;&nbsp; 1000Max Jobs/Policy:&nbsp;&nbsp; UnlimitedDisaster Recovery: 0Collect BMR Info:&nbsp; noKeyword:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (none specified)Data Classification:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -Residence is Storage Lifecycle Policy:&nbsp;&nbsp;&nbsp; noClient Encrypt:&nbsp;&nbsp;&nbsp; noCheckpoint:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; noResidence:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; LocalDiskVolume Pool:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DataStoreServer Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *ANY*Granular Restore Info:&nbsp; noExchange Source attributes:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; noExchange DAG Preferred Server: (none defined)Application Discovery:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; yesDiscovery Lifetime:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 28800 secondsASC Application and attributes: (none defined)Generation:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 20Ignore Client Direct:&nbsp; noUse Accelerator:&nbsp; noClient/HW/OS/Pri/CIT:&nbsp; MEDIA_SERVER VMware VMware 0 0 0 ?Include:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; vmware:/?filter=Displayname Equal "vDeskW7-Parent2" OR (Annotation Contains "Backup_30D" AND Powerstate Equal poweredOn)Schedule:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Full&nbsp; Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; FULL (0)&nbsp; Frequency:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 7 day(s) (604800 seconds)&nbsp;&nbsp; Excluded Dates----------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; No specific exclude dates entered&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; No exclude days of week entered&nbsp; Retention Level:&nbsp;&nbsp;&nbsp;&nbsp; 1 (2 weeks)&nbsp; u-wind/o/d:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 0&nbsp; Incr Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DELTA (0)&nbsp; Alt Read Host:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (none defined)&nbsp; Max Frag Size:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 MB&nbsp; PFI Recovery:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Maximum MPX:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp; Number Copies:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp; Fail on Error:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Residence:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (specific storage unit not required)&nbsp; Volume Pool:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (same as policy volume pool)&nbsp; Server Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (same as specified for policy)&nbsp; Residence is Storage Lifecycle Policy:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Daily Windows:&nbsp;&nbsp; Day&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Open&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Close&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; W-Open&nbsp;&nbsp;&nbsp;&nbsp; W-Close&nbsp;&nbsp; Sunday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Monday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Tuesday&nbsp;&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Wednesday&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Thursday&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Friday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Saturday&nbsp;&nbsp;&nbsp; 018:00:00&nbsp; 056:00:00&nbsp;&nbsp; 162:00:00&nbsp; 200:00:00 032:00:00Schedule:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Differential-Inc&nbsp; Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; INCR (1)&nbsp; Frequency:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1 day(s) (86400 seconds)&nbsp;&nbsp; Excluded Dates----------&nbsp;&nbsp;&nbsp; EXCLUDE DATE 0 - 12/02/2016&nbsp;&nbsp;&nbsp; EXCLUDE DATE 1 - 12/03/2016&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; No exclude days of week entered&nbsp; Retention Level:&nbsp;&nbsp;&nbsp;&nbsp; 0 (1 week)&nbsp; u-wind/o/d:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 0&nbsp; Incr Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DELTA (0)&nbsp; Alt Read Host:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (none defined)&nbsp; Max Frag Size:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 MB&nbsp; PFI Recovery:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Maximum MPX:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp; Number Copies:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp; Fail on Error:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Residence:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (specific storage unit not required)&nbsp; Volume Pool:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (same as policy volume pool)&nbsp; Server Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (same as specified for policy)&nbsp; Residence is Storage Lifecycle Policy:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Daily Windows:&nbsp;&nbsp; Day&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Open&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Close&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; W-Open&nbsp;&nbsp;&nbsp;&nbsp; W-Close&nbsp;&nbsp; Sunday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Monday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 018:00:00&nbsp; 032:00:00&nbsp;&nbsp; 042:00:00&nbsp; 056:00:00 &nbsp;&nbsp;&nbsp; Tuesday&nbsp;&nbsp;&nbsp;&nbsp; 018:00:00&nbsp; 032:00:00&nbsp;&nbsp; 066:00:00&nbsp; 080:00:00 &nbsp;&nbsp;&nbsp; Wednesday&nbsp;&nbsp; 018:00:00&nbsp; 032:00:00&nbsp;&nbsp; 090:00:00&nbsp; 104:00:00 &nbsp;&nbsp;&nbsp; Thursday&nbsp;&nbsp;&nbsp; 018:00:00&nbsp; 032:00:00&nbsp;&nbsp; 114:00:00&nbsp; 128:00:00 &nbsp;&nbsp;&nbsp; Friday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 018:00:00&nbsp; 032:00:00&nbsp;&nbsp; 138:00:00&nbsp; 152:00:00 &nbsp;&nbsp;&nbsp; Saturday&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp;bppllist VMWARE30D-Tape -LPolicy Name:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; VMWARE30D-TapeOptions:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0x0template:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; FALSEaudit_reason:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ?Names:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (none)Policy Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; VMware (40)Active:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; yesEffective date:&nbsp;&nbsp;&nbsp; 11/18/2016 11:00:00File Restore Raw:&nbsp; yesBlock Incremental: yesApplication Consistent:&nbsp; yesMult. Data Stream: noPerform Snapshot Backup:&nbsp;&nbsp; yesSnapshot Method:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; VMware_v2Snapshot Method Arguments: file_system_optimization=1,rTO=0,snapact=2,drive_selection=0,Virtual_machine_backup=2,enable_vCloud=0,multi_org=0,rHz=10,rLim=10,nameuse=1,disable_quiesce=1,ignore_irvm=1,exclude_swap=1,skipnodisk=0,tags_unset=0,post_events=1,trantype=hotadd:nbd:nbdssl:sanPerform Offhost Backup:&nbsp;&nbsp;&nbsp; yesBackup Copy:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0Use Data Mover:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; noData Mover Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2Use Alternate Client:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; noAlternate Client Name:&nbsp;&nbsp;&nbsp;&nbsp; MEDIA_SERVERUse Virtual Machine:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1Hyper-V Server Name:&nbsp;&nbsp;&nbsp;&nbsp; (none)Enable Instant Recovery:&nbsp;&nbsp; noPolicy Priority:&nbsp;&nbsp; 1000Max Jobs/Policy:&nbsp;&nbsp; UnlimitedDisaster Recovery: 0Collect BMR Info:&nbsp; noKeyword:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (none specified)Data Classification:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; -Residence is Storage Lifecycle Policy:&nbsp;&nbsp;&nbsp; noClient Encrypt:&nbsp;&nbsp;&nbsp; noCheckpoint:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; noResidence:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TS3100Volume Pool:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DataStoreServer Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; *ANY*Granular Restore Info:&nbsp; noExchange Source attributes:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; noExchange DAG Preferred Server: (none defined)Application Discovery:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; yesDiscovery Lifetime:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 28800 secondsASC Application and attributes: (none defined)Generation:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 25Ignore Client Direct:&nbsp; noUse Accelerator:&nbsp; noClient/HW/OS/Pri/CIT:&nbsp; MEDIA_SERVER VMware VMware 0 0 0 ?Include:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; vmware:/?filter=Annotation Contains "Tape_30D" AND Powerstate Equal poweredOnSchedule:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Full&nbsp; Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; FULL (0)&nbsp; Frequency:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 7 day(s) (604800 seconds)&nbsp;&nbsp; Excluded Dates----------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; No specific exclude dates entered&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; No exclude days of week entered&nbsp; Retention Level:&nbsp;&nbsp;&nbsp;&nbsp; 1 (2 weeks)&nbsp; u-wind/o/d:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 0&nbsp; Incr Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DELTA (0)&nbsp; Alt Read Host:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (none defined)&nbsp; Max Frag Size:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 MB&nbsp; PFI Recovery:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Maximum MPX:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp; Number Copies:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp; Fail on Error:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Residence:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (specific storage unit not required)&nbsp; Volume Pool:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (same as policy volume pool)&nbsp; Server Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (same as specified for policy)&nbsp; Residence is Storage Lifecycle Policy:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Daily Windows:&nbsp;&nbsp; Day&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Open&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Close&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; W-Open&nbsp;&nbsp;&nbsp;&nbsp; W-Close&nbsp;&nbsp; Sunday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Monday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Tuesday&nbsp;&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Wednesday&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Thursday&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Friday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Saturday&nbsp;&nbsp;&nbsp; 017:00:00&nbsp; 056:00:00&nbsp;&nbsp; 161:00:00&nbsp; 200:00:00 032:00:00Schedule:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Differential-Inc&nbsp; Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; INCR (1)&nbsp; Frequency:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1 day(s) (86400 seconds)&nbsp;&nbsp; Excluded Dates----------&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; No specific exclude dates entered&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; No exclude days of week entered&nbsp; Retention Level:&nbsp;&nbsp;&nbsp;&nbsp; 0 (1 week)&nbsp; u-wind/o/d:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 0&nbsp; Incr Type:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; DELTA (0)&nbsp; Alt Read Host:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (none defined)&nbsp; Max Frag Size:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0 MB&nbsp; PFI Recovery:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Maximum MPX:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp; Number Copies:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 1&nbsp; Fail on Error:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Residence:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (specific storage unit not required)&nbsp; Volume Pool:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (same as policy volume pool)&nbsp; Server Group:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (same as specified for policy)&nbsp; Residence is Storage Lifecycle Policy:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0&nbsp; Daily Windows:&nbsp;&nbsp; Day&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Open&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Close&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; W-Open&nbsp;&nbsp;&nbsp;&nbsp; W-Close&nbsp;&nbsp; Sunday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00&nbsp;&nbsp; Monday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 017:00:00&nbsp; 034:00:00&nbsp;&nbsp; 041:00:00&nbsp; 058:00:00 &nbsp;&nbsp;&nbsp; Tuesday&nbsp;&nbsp;&nbsp;&nbsp; 017:00:00&nbsp; 034:00:00&nbsp;&nbsp; 065:00:00&nbsp; 082:00:00 &nbsp;&nbsp;&nbsp; Wednesday&nbsp;&nbsp; 017:00:00&nbsp; 034:00:00&nbsp;&nbsp; 089:00:00&nbsp; 106:00:00 &nbsp;&nbsp;&nbsp; Thursday&nbsp;&nbsp;&nbsp; 017:00:00&nbsp; 034:00:00&nbsp;&nbsp; 113:00:00&nbsp; 130:00:00 &nbsp;&nbsp;&nbsp; Friday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 017:00:00&nbsp; 034:00:00&nbsp;&nbsp; 137:00:00&nbsp; 154:00:00 &nbsp;&nbsp;&nbsp; Saturday&nbsp;&nbsp;&nbsp; 000:00:00&nbsp; 000:00:00

rb-infinitely · Answer

It might be that its is not getting the correct CBT information from the VMware environment. Can you compare the amount of files backed up in addition to the kbytes?

dmitry_k · Answer

&gt;&gt;The differential incremental backups always bring more or slightly less&nbsp;data than full backups.Resetting Changed Block Tracking for VMware vSphere virtual machines (2139574)https://kb.vmware.com/s/article/2139574

Forum Discussion

Differential incremental backs up more data than full

VMware Backups with Block Level Incremental or Changed Block Tracking can return incorrect changed sectors in ESXi 6.0

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VMware Backups with Block Level Incremental or Changed Block Tracking can return incorrect changed sectors in ESXi 6.0

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