Thanks for your reply,
Please find attached esxupdate.log and vua.log files.
i have checked the host have enough space.
~ # df -h
Filesystem Size Used Available Use% Mounted on
VMFS-5 1023.8G 301.1G 722.6G 29% /vmfs/volumes/ABC_S_001
VMFS-5 1023.8G 494.4G 529.4G 48% /vmfs/volumes/ABC_S_002
VMFS-5 1023.8G 395.5G 628.2G 39% /vmfs/volumes/ABC_S1_002
VMFS-5 267.2G 21.1G 246.1G 8% /vmfs/volumes/ABCDEF-local-storage
VMFS-5 1023.8G 48.5G 975.2G 5% /vmfs/volumes/ABC_S1_004
VMFS-5 1023.8G 257.1G 766.7G 25% /vmfs/volumes/ABC_S1_003
VMFS-5 1023.8G 356.1G 667.7G 35% /vmfs/volumes/ABC_S1_001
VMFS-5 1023.8G 26.8G 996.9G 3% /vmfs/volumes/ABC_V_002
VMFS-5 1023.8G 976.0M 1022.8G 0% /vmfs/volumes/ABC_V_001
vfat 4.0G 31.9M 4.0G 1% /vmfs/volumes/525c21a8-06675596-b24d-00 26b9625f7c
vfat 249.7M 161.3M 88.5M 65% /vmfs/volumes/76468f7b-08e231a6-02fc-7a 5b301aef7e
vfat 249.7M 145.8M 103.9M 58% /vmfs/volumes/6c0c1a76-1a931574-8e42-fd ee9fba9337
vfat 285.8M 128.0K 285.7M 0% /vmfs/volumes/525c218f-0a03300c-c0f5-00 26b9625f7c
My esxisting esxi version is ESXi 5.1.0, 2000251 , its a custom image installed on Dell PowerEdge R710.
I have'nt seen any kind of 3rd party software warning message while remediating.
I have tried in first stoke(found on goodle) removed the host from cluster , rebooted , detached and attached but that too didnt helped.