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SFHA Solutions 6.2 (Solaris): Dynamic application failover in a virtual environment

Sujith_Mallath1
Level 3
Employee Accredited

The AdaptiveHA feature was introduced in Storage Foundation and High Availability (SFHA) 6.1. Beginning in this release, Symantec Cluster Server (VCS) supports dynamic selection of target nodes for a virtual machine service group (VMSG). In this release, this feature is supported only on Oracle VM Server for SPARC. When you install VCS, this feature is enabled by default.

In a VMSG, you do not need to include CPU, Memory, and Swap values when specifying the Load because the Load is auto-populated by aggregating resource utilization. VCS monitors and forecasts the available capacity of the physical server in terms of SCPU and SMem. SCPU and SMem are resource-level meters. If you set the FailOverPolicy service group attribute to BiggestAvailable, VCS dynamically selects the biggest available target physical server to bring the VMSG online, or switch or failover the VMSG.

For more information about dynamic application failover in a virtual environment, see:

The following table lists the attributes that are modified or newly introduced for this feature.

Cluster attributes
  • HostAvailableMeters
  • HostMeters
  • MeterControl
  • MeterUnit
  • MeterWeight
Resource attribute
  • Utilization
Resource type attributes
  • AvailableMeters
  • MeterEnabled
  • MeterRegList
  • MeterRetryLimit
  • Meters
  • MeterTimeout
Service group attribute
  • Load
System attributes
  • ServerAvailableCapacity
  • ServerAvailableForecast
  • ServerCapacity
  • ServerReservedCapacity

Symantec Storage Foundation and High Availability documentation for other releases and platforms can be found on the SORT website.

 

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