Migrating Symantec Veritas Cluster Server to HP Serviceguard for Linux

Technical white paper | Migrating Symantec Veritas Cluster Server to HP Serviceguard for Linux
Mapping of VCS system attributes to SG/LX node attributes
The following table maps the VCS system attributes to the closest SG/LX node attributes.
Table 3. VCS system attributes and SG/LX node attributes
VCS system attributes,
which can be editable by
users
Corresponding SG/LX node attributes
(equivalent to some extent), which can be
editable by users
Descriptions
1 Capacity “capacity_name” and “capacity_value” In VCS, the “Capacity” attribute is configured to express total
system load capacity. This value is relative to other systems in the
cluster and does not reflect any real value associated with a
particular system.
In Serviceguard, “capacity_name” and “capacity_value” attributes
are used to define capacities of nodes.
2 DynamicLoad Generic Resource framework In VCS, the “DynamicLoad” attribute is used to indicate
system-maintained value of current dynamic load. The
value is set external to VCS with the hasys-load command.
In Serviceguard, Generic Resource framework is used for modeling
dynamic metrics to influence failover.
3 SourceFile “cmclconfig” file In VCS, the “SourceFile” attribute indicates a file from which the
configuration is read.
In Serviceguard, configuration file is stored in binary format with
the name “cmclconfig”.
4 SystemLocation SITE_NAME In VCS, the “SystemLocation” attribute can be used to indicate the
location of the system.
In Serviceguard, SITE_NAME attribute is used to indicate the
location of nodes.
5 UserInt PEV_ In VCS, the attribute “UserInt” is used to store integer values. VCS
does not interpret the value of this attribute.
In Serviceguard, user-defined variables can specify using
PEV_ prefix in the application’s package configuration file.
Converting VCS service groups to SG/LX packages
The VCS service groups and the SG/LX packages
VCS service group acts as a virtual container that contains all the hardware and software resources that are required to run
an application. The VCS service groups allow VCS to control all the hardware and software resources of the managed
application as a single unit.
The SG/LX package can be defined as a collection of services, disk volumes, generic resources, and IP addresses that are
managed by Serviceguard to help ensure they are available. In case of any hardware or software failure, which impacts any
component of the SG/LX package, Serviceguard fails over the package to another node in the cluster. This allows the
application services to continue with minimal interruption.
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