Size, statsize and checksum for raid6 layout

What are possible reasons for size and checsum to differ on different “replicas”?

eos file check /eulake/lcg/test/hammercloud/atlas/testc/rucio/hc_test/test/other/hc_test.wlcgdatalakes.LRZ-LMU_DATADISK.00.test/HITS.10701323._008539.pool.root.1
path="/eulake/lcg/test/hammercloud/atlas/testc/rucio/hc_test/test/other/hc_test.wlcgdatalakes.LRZ-LMU_DATADISK.00.test/HITS.10701323._008539.pool.root.1" fid="0003b34f" size="3155925545" nrep="4" checksumtype="adler" checksum="c3190af900000000000000000000000000000000"
nrep="00" fsid="140" host="crlt-cext8.cdndev.aarnet.edu.au:1095" fstpath="/disks/aucrlt1/00000018/0003b34f" size="3155925545" statsize="792727552" checksum="c3190af900000000000000000000000000000000"
nrep="01" fsid="49" host="p05799459m56401.cern.ch:1095" fstpath="/data24/00000018/0003b34f" size="792727552" statsize="792727552" checksum="0000000000000000000000000000000000000000"
nrep="02" fsid="122" host="dvl-mb01.jinr.ru:1095" fstpath="/mnt/data01/00000018/0003b34f" size="792727552" statsize="792727552" checksum="0000000000000000000000000000000000000000"
nrep="03" fsid="97" host="p05798818t49625.cern.ch:1095" fstpath="/data02/00000018/0003b34f" size="792727552" statsize="792727552" checksum="0000000000000000000000000000000000000000"

eos fileinfo /eulake/lcg/test/hammercloud/atlas/testc/rucio/hc_test/test/other/hc_test.wlcgdatalakes.LRZ-LMU_DATADISK.00.test/HITS.10701323._008539.pool.root.1
  File: '/eulake/lcg/test/hammercloud/atlas/testc/rucio/hc_test/test/other/hc_test.wlcgdatalakes.LRZ-LMU_DATADISK.00.test/HITS.10701323._008539.pool.root.1'  Flags: 0644
  Size: 3155925545
Modify: Wed Jun 13 11:42:31 2018 Timestamp: 1528882951.0
Change: Wed Jun 13 11:42:06 2018 Timestamp: 1528882926.335198287
  CUid: 10763 CGid: 1307  Fxid: 0003b34f Fid: 242511    Pid: 8458   Pxid: 0000210a
XStype: adler    XS: c3 19 0a f9     ETAG: 65098550870016:c3190af9
raid6 Stripes: 6 Blocksize: 4M LayoutId: 20650542
  #Rep: 4
┌───┬──────┬───────────────────────────────┬────────────────┬────────────────┬──────────┬──────────────┬────────────┬────────┬────────────────────────┐
│no.│ fs-id│                           host│      schedgroup│            path│      boot│  configstatus│ drainstatus│  active│                  geotag│
└───┴──────┴───────────────────────────────┴────────────────┴────────────────┴──────────┴──────────────┴────────────┴────────┴────────────────────────┘
 0      140 crlt-cext8.cdndev.aarnet.edu.au        default.0   /disks/aucrlt1     booted             rw      nodrain   online                  au-crlt 
 1       49         p05799459m56401.cern.ch        default.0          /data24     booted             rw      nodrain   online      9918::R::0001::WF03 
 2      122                dvl-mb01.jinr.ru        default.0      /mnt/data01     booted             rw      nodrain   online                    Dubna 
 3       97         p05798818t49625.cern.ch        default.0          /data02     booted             rw      nodrain   online      0513::R::0050::RA65 

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