Incremental backup is almost as big as the full

Hi,

I have a windows 2012 R2 cluster with Windows StorageSpaces(dedup enabled). I have 2 drives X and Y , and multiple shares under each drives. I have many number of policies which have been structured to take the backup of one share in X and 1 share in Y. There is a strange thing happening with many of these policies , which is , the incremental backup is almost the same as the full backup in many of these. Im finding it really tough to troubleshoot this as there is no changes happening in the source data. Anyhelp would be highly appreciated.

Master : 7.6.0.4 , Windows 2012 R2

Media : 7.6.0.4 , RHEL 6.5

One of the policies is :

PS E:\Program Files\Veritas\NetBackup\bin\admincmd> ./bppllist Win_StorageSpaces_01
CLASS Win_StorageSpaces_01 *NULL* 0 760000 0 *NULL*
NAMES
INFO 13 0 0 0 *NULL* 0 0 2147483647 0 0 0 0 0 0 0 1 0 0 1406899844 EE4EDD04A77E4A8883BDA40D60A18BAC 1 1 60 0 0 0 0 0 2 0 0 0 0 0 1 3 0 68 0 28800 0 0 0 0 1
KEY *NULL*
BCMD *NULL*
RCMD *NULL*
RES WSS_Backup *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
POOL NetBackup NetBackup NetBackup NetBackup NetBackup NetBackup NetBackup NetBackup NetBackup NetBackup
FOE 0 0 0 0 0 0 0 0 0 0
SHAREGROUP *ANY*
DATACLASSIFICATION *NULL*
CLIENT ca1fs01-ib Windows-x64 Windows2008 0 0 0 0 *NULL*
INCLUDE NEW_STREAM
INCLUDE X:\wss_autotierpool1_vol1\Shares\
INCLUDE NEW_STREAM
INCLUDE Y:\wss_autotierpool2_vol1\shares\
SCHED Full 0 1 604800 8 0 0 0 *NULL* 0 1 0 0 0 0 -1 0 0 0
SCHEDCALENDAR
SCHEDWIN 0 0 0 0 0 0 0 0 0 0 61200 216000 0 0
SCHEDRES *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDPOOL *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDRL 8 1 1 1 1 1 1 1 1 1
SCHEDFOE 0 0 0 0 0 0 0 0 0 0
SCHEDSG *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHED Incremental 1 1 604800 3 0 0 0 *NULL* 0 1 0 0 0 0 -1 0 0 0
SCHEDCALENDAR
SCHEDWIN 0 0 0 0 0 0 0 0 0 0 0 0 0 0
SCHEDRES *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDPOOL *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
SCHEDRL 3 1 1 1 1 1 1 1 1 1
SCHEDFOE 0 0 0 0 0 0 0 0 0 0
SCHEDSG *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL* *NULL*
PS E:\Program Files\Veritas\NetBackup\bin\admincmd> ./bppllist Win_StorageSpaces_01 -L

Policy Name:       Win_StorageSpaces_01
Options:           0x0
template:          FALSE
audit_reason:         ?
Names:             (none)
Policy Type:       MS-Windows (13)
Active:            yes
Effective date:    08/01/2014 06:30:44
Client Compress:   no
Follow NFS Mnts:   no
Backup netwrk drvs:no
Collect TIR info:      no
Mult. Data Stream: yes
Perform Snapshot Backup:   no
Snapshot Method:           (none)
Snapshot Method Arguments: (none)
Perform Offhost Backup:    no
Backup Copy:               0
Use Data Mover:            no
Data Mover Type:           2
Use Alternate Client:      no
Alternate Client Name:     (none)
Use Virtual Machine:      0
Hyper-V Server Name:     (none)
Enable Instant Recovery:   no
Policy Priority:   0
Max Jobs/Policy:   Unlimited
Disaster Recovery: 0
Collect BMR Info:  no
Keyword:           (none specified)
Data Classification:       -
Residence is Storage Lifecycle Policy:    no
Client Encrypt:    no
Checkpoint:        yes
      Interval:    60
Residence:         WSS_Backup
Volume Pool:       NetBackup
Server Group:      *ANY*
Granular Restore Info:  no
Exchange Source attributes:              no
Exchange DAG Preferred Server: (none defined)
Application Discovery:      no
Discovery Lifetime:      28800 seconds
ASC Application and attributes: (none defined)
Generation:      68
Ignore Client Direct:  yes
Enable Metadata Indexing:  no
Index server name:  NULL
Use Accelerator:  no
Optimized Backup:  no
Client/HW/OS/Pri/DMI/CIT:  ca1fs01-ib Windows-x64 Windows2008 0 0 0 0 ?
Include:           NEW_STREAM
Include:           X:\wss_autotierpool1_vol1\Shares\
Include:           NEW_STREAM
Include:           Y:\wss_autotierpool2_vol1\shares\
Schedule:              Full
  Type:                FULL (0)
  Calendar sched: Enabled
   Included Dates-----------
       No days of week entered
   Excluded Dates----------
      No specific exclude dates entered
      No exclude days of week entered
  Retention Level:     8 (1 year)
  u-wind/o/d:          0 0
  Incr Type:           DELTA (0)
  Alt Read Host:       (none defined)
  Max Frag Size:       0 MB
  Synthetic:           0
  Checksum Change Detection: 0
  PFI Recovery:        0
  Maximum MPX:         1
  Number Copies:       1
  Fail on Error:       0
  Residence:           (specific storage unit not required)
  Volume Pool:         (same as policy volume pool)
  Server Group:        (same as specified for policy)
  Residence is Storage Lifecycle Policy:         0
  Schedule indexing:   0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  000:00:00
   Monday      000:00:00  000:00:00
   Tuesday     000:00:00  000:00:00
   Wednesday   000:00:00  000:00:00
   Thursday    000:00:00  000:00:00
   Friday      017:00:00  077:00:00   137:00:00  197:00:00 029:00:00
   Saturday    000:00:00  000:00:00
Schedule:              Incremental
  Type:                INCR (1)
  Calendar sched: Enabled
   Included Dates-----------
       No days of week entered
   Excluded Dates----------
      No specific exclude dates entered
      No exclude days of week entered
  Retention Level:     3 (1 month)
  u-wind/o/d:          0 0
  Incr Type:           DELTA (0)
  Alt Read Host:       (none defined)
  Max Frag Size:       0 MB
  PFI Recovery:        0
  Maximum MPX:         1
  Number Copies:       1
  Fail on Error:       0
  Residence:           (specific storage unit not required)
  Volume Pool:         (same as policy volume pool)
  Server Group:        (same as specified for policy)
  Residence is Storage Lifecycle Policy:         0
  Schedule indexing:   0
  Daily Windows:
   Day         Open       Close       W-Open     W-Close
   Sunday      000:00:00  000:00:00
   Monday      000:00:00  000:00:00
   Tuesday     000:00:00  000:00:00
   Wednesday   000:00:00  000:00:00
   Thursday    000:00:00  000:00:00
   Friday      000:00:00  000:00:00
   Saturday    000:00:00  000:00:00
PS E:\Program Files\Veritas\NetBackup\bin\admincmd>

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