Vmware backup job size is bigger than expected

Hello Kiyan

the policy details:

Policy Name: lxnt-ivp-all-iaas-fr0-vsg170ora-p01-fr0-iaasRCL28-M01-Oracle
Options: 0x0
template: FALSE
audit_reason: ?
Names: (none)
Policy Type: VMware (40)
Active: yes
Effective date: 01/15/2018 10:59:17
File Restore Raw: yes
Block Incremental: yes
Application Consistent: yes
Mult. Data Stream: no
Perform Snapshot Backup: yes
Snapshot Method: VMware_v2
Snapshot Method Arguments: skipnodisk=0,post_events=1,multi_org=0,Virtual_machine_backup=2,continue_discovery=1,exclude_swap=1,nameuse=1,tags_unset=0,ignore_irvm=1,rLim=10,snapact=2,enable_quiesce_failover=0,file_system_optimization=1,drive_selection=0,cleanupLoginTO=120,disable_quiesce=0,enable_vCloud=0,serverlist=fr0-vsg170ora-p01,cleanupLoginLim=5,trantype=san:nbd,rHz=10,rTO=0
Perform Offhost Backup: yes
Backup Copy: 0
Use Data Mover: no
Data Mover Type: 2
Use Alternate Client: no
Alternate Client Name: MEDIA_SERVER
Use Backup Host Pool: no
Backup Host Pool Name: (none)
Use Virtual Machine: 1
Hyper-V Server Name: (none)
Enable Instant Recovery: no
Policy Priority: 1000
Max Jobs/Policy: 40
Disaster Recovery: 0
Collect BMR Info: no
Keyword: (none specified)
Data Classification: -
Residence is Storage Lifecycle Policy: yes
Client Encrypt: no
Checkpoint: no
Residence: SLP_Backup-fr0-nbuim88-p22_M88_6W
Volume Pool: NetBackup
Server Group: *ANY*
Granular Restore Info: no
Exchange Source attributes: no
Exchange DAG Preferred Server: (none defined)
Application Discovery: yes
Discovery Lifetime: 28800 seconds
ASC Application and attributes: (none defined)
Generation: 55
Ignore Client Direct: yes
Use Accelerator: yes
Client/HW/OS/Pri/CIT: MEDIA_SERVER VMware VMware 0 0 0 ?
Include: vmware:/?filter=((((((((((((((((((((((((Cluster Equal 'fr0-iaasRCL28-M01-Oracle') AND (Displayname StartsWith 'fr0-')) AND ((Powerstate) Equal (poweredOn))) AND (Displayname NotEqual 'fr0-vsorabm-i54')) AND (Displayname NotEqual 'fr0-vsorabm-i01')) AND (Displayname NotEqual 'fr0-vsoraad-p67')) AND (Displayname NotEqual 'fr0-vsoraad-v67')) AND (Displayname NotEqual 'fr0-vsoraad-p41')) AND (Displayname NotEqual 'fr0-vspg-v07')) AND (Displayname NotEqual 'fr0-vora-i4tr1e')) AND (Displayname NotEqual 'fr0-vora-v4tr1e')) AND (Displayname NotEqual 'fr0-vsoraad-p21')) AND (Displayname NotEqual 'fr0-vsoraad-p22')) AND (Displayname NotEqual 'fr0-vsoraad-v13')) AND (Displayname NotEqual 'fr0-vsoraad-v14')) AND (Displayname NotEqual 'fr0-vsoraad-p23')) AND (Displayname NotEqual 'fr0-vsoraad-p24')) AND (Displayname NotEqual 'fr0-vsoraad-v11')) AND (Displayname NotEqual 'fr0-vsoraad-v12')) AND (Displayname NotEqual 'fr0-vsorabm-i34')) AND (Displayname NotEqual 'fr0-vsoraad-p17')) AND (Displayname NotEqual 'fr0-vsoraad-p18')) AND (Displayname NotEqual 'fr0-vsoraad-v15')) AND (Displayname NotEqual 'fr0-vsoraad-v16')) AND (Displayname NotEqual 'fr0-vsoraad-p63') AND Displayname NotEqual "fr0-vsorabm-t20" AND Displayname NotEqual "fr0-vsorabm-t22"
Schedule: full
Type: FULL (0)
Frequency: 7 day(s) (604800 seconds)
Excluded Dates----------
No specific exclude dates entered
No exclude days of week entered
Retention Level: 0 (1 week)
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: 8
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
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
Schedule: incr
Type: INCR (1)
Frequency: 7 day(s) (604800 seconds)
Excluded Dates----------
No specific exclude dates entered
No exclude days of week entered
Retention Level: 0 (1 week)
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: 8
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
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

Regarding the logs, what logs are needed? 

The vmware disks aren't thick. 

Thanks.