Log management system, log management apparatuses, methods and computer programs

A log management apparatus for managing log data for a target, comprising:

• a local computer configured to
• split the log data that is generated regularly or intermittently for the target into a plurality of split log fragments including a split log fragment for remote transmission per predetermined unit according to All Or Nothing Transform (AONT) scheme, the split log fragment for remote transmission having a smaller size than remaining split log fragments, and
• regularly or intermittently transmit the split log fragment for remote transmission to a remote apparatus over a first communication channel to cause the remote apparatus to store the split log fragment for remote transmission, and
• transmit, in response to occurrence of an event that requires partial recovery of the log data, one or more remaining split log fragments over a second communication channel having higher communication rate than the first communication channel, the one or more remaining split log fragments corresponding to the log data to be partially recovered out of the remaining split log fragments accumulated by the local computer to the remote computer which is to recover the log data from the one or more remaining split log fragments and the corresponding split log fragment for remote transmission according to the AONT scheme.

A method performed in a log management apparatus for managing log data for a target, comprising:

• splitting the log data that is generated regularly or intermittently for the target into a plurality of split log fragments including a split log fragment for remote transmission per predetermined unit according to All Or Nothing Transform (AONT) scheme, the split log fragment for remote transmission having a smaller size than remaining split log fragments;
• regularly or intermittently transmitting the split log fragment for remote transmission to a remote apparatus over a first communication channel to cause the remote apparatus to store the split log fragment for remote transmission;
• and
• transmitting, in response to occurrence of an event that requires partial recovery of the log data, one or more remaining split log fragments over a second communication channel having higher communication rate than the first communication channel, the one or more remaining split log fragments corresponding to the log data to be partially recovered out of the remaining split log fragments accumulated by a local computer to a remote computer which is to recover the log data from the one or more remaining split log fragments and the corresponding split log fragment for remote transmission according to the AONT scheme.

A non-transitory computer-readable medium which, when read by a processor of a log management apparatus for managing log data for a target, causes the processor to function as:

• a local computer configured to
• split the log data that is generated regularly or intermittently for the target into a plurality of split log fragments including a split log fragment for remote transmission per predetermined unit according to All Or Nothing Transform (AONT) scheme, the split log fragment for remote transmission having a smaller size than remaining split log fragments,
• regularly or intermittently transmit the split log fragment for remote transmission over a first communication channel to a remote apparatus to cause the remote apparatus to store the split log fragment for remote transmission, and
• transmit, in response to occurrence of an event that requires partial recovery of the log data, one or more remaining split log fragments over a second communication channel having higher communication rate than the first communication channel, the one or more remaining split log fragments corresponding to the log data to be partially recovered out of the remaining split log fragments accumulated by a local apparatus to a remote computer which is to recover the log data from the one or more remaining split log fragments and the corresponding split log fragment for remote transmission according to the AONT scheme.