KEMP loses connectivity during exchange backups

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When I run my exchange backups using Netbackup the KEMP load balancer reports loss of connectivity with the mailbox hosts

 

There a little resource usage on the mailbox hosts so happy its not cpu, memory or network overload on the mailbox hosts

 

anyone any ideas

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Tony Vaughan

The LoadMaster is reporting loss off connectivity because it can't retrieve the "healthcheck.htm" page which is dynamically produced by the Exchange Server

There are a number of reasons why this may occur, it maybe that the LoadMaster "Get process" times out in 9 seconds, or that the server is replying with something other than a "HTTP 200 OK" on that page

it may be an issue with the underlying disk subsystem,
it would worth investigating if the disk is freezing during the VSS Snapshot