6.5.1

Table 2‑4. vSphere HA Advanced Options (Continued)
Option Description
fdm.isolationpolicydelaysec
The number of seconds system waits before executing the
isolation policy once it is determined that a host is isolated.
The minimum value is 30. If set to a value less than 30, the
delay will be 30 seconds.
das.respectvmvmantiaffinityrules
Determines if vSphere HA enforces VM-VM anti-anity
rules. Default value is "false", whereby the rules are not
enforced. Can also be set to "true" and rules are enforced
(even if vSphere DRS is not enabled). In this case, vSphere
HA does not fail over a virtual machine if doing so violates
a rule, but it issues an event reporting there are insucient
resources to perform the failover.
See vSphere Resource Management for more information on
anti-anity rules.
das.maxresets
The maximum number of reset aempts made by VMCP. If
a reset operation on a virtual machine aected by an APD
situation fails, VMCP retries the reset this many times
before giving up
das.maxterminates
The maximum number of retries made by VMCP for
virtual machine termination.
das.terminateretryintervalsec
If VMCP fails to terminate a virtual machine, this is the
number of seconds the system waits before it retries a
terminate aempt
das.config.fdm.reportfailoverfailevent
When set to 1, enables generation of a detailed per-VM
event when an aempt by vSphere HA to restart a virtual
machine is unsuccessful. Default value is 0. In versions
earlier than vSphere 6.0, this event is generated by default.
vpxd.das.completemetadataupdateintervalsec
The period of time (seconds) after a VM-Host anity rule
is set during which vSphere HA can restart a VM in a DRS-
disabled cluster, overriding the rule. Default value is 300
seconds.
das.config.fdm.memreservationmb
By default vSphere HA agents run with a congured
memory limit of 250 MB. A host might not allow this
reservation if it runs out of reservable capacity. You can use
this advanced option to lower the memory limit to avoid
this issue. Only integers greater than 100, which is the
minimum value, can be specied. Conversely, to prevent
problems during master agent elections in a large cluster
(containing 6,000 to 8,000 VMs) you should raise this limit
to 325 MB.
N Once this limit is changed, for all hosts in the cluster
you must run the Recongure HA task. Also, when a new
host is added to the cluster or an existing host is rebooted,
this task should be performed on those hosts in order to
update this memory seing.
vSphere Availability
36 VMware, Inc.