File Archive Activity jobs failed after reaching its timeout

During the job, the following errors appeared:

PollUnpackAreaDelMsg|ERROR|Failed to Access database lock: RL_FT_UNPACK_DIR - 86040419|ExAsIndexPoll.cpp(2648)|S1MFE

GetTransactions|WARNING|Skipping \\172.27.170.2\sourceone\index01\DropDir unable to claim dropdir lock.  Error: 0x86042560|ExAsIdxComp.cpp(2561)|S1MFE

the following lines are from SOFileArchiveJBC log appeared at the end of the allowed timeout (which is 10 hours)

CSOFileArchiveJBC::ProcessDirectoryFiles|ERROR-LOGD|System call failed. (0x86040100) Catastrophic failure  (0x8000FFFF)

CSOFileArchiveJBC::Run|ERROR|Job Failed with Error Code: 0x8000FFFF

It was also showing the following warning for Index locations:

CExAsIndexPoll::DoLowWater|WARNING-LOGD|Disk space low: current = 15%, target > 20%,