Frequently asked questions (FAQs)
If you have questions about the VM Recovery Manager DR solution, review the following list of answers to some frequently asked questions.
- How many sites can be configured by using the VM Recovery Manager DR solution?
- Currently, only two sites can be configured. An active site and a backup site.
- Which POWER® servers can be included for disaster recovery by using the VM Recovery Manager DR solution?
- POWER7 processor-based server, or later.
- Which type of storage devices are supported by the VM Recovery Manager DR solution?
- See Configuration requirements.
- Does this solution support Shared Storage Pool (SSP)?
- Yes. The VM Recovery Manager DR solution also supports shared storage configuration. For more information, see Managing the shared storage configuration.
- Does the VM Recovery Manager DR solution support any flexible capacity management solutions?
- Yes. The VM Recovery Manager DR solution supports
Enterprise Pool Capacity on Demand (CoD) and Elastic CoD (formerly known as On/Off CoD) features.
The VM Recovery Manager DR solution manages the memory and
processor requests before starting the disaster recovery operation. For more information, see Managing the CoD resources.
The VM Recovery Manager DR solution also supports flexible capacity policies by using the KSYS command interface. For more information, see Configuring the flexible capacity policies.
- Which operation systems are supported for the virtual machines in the hosts?
-
- AIX® Version 6.1, and later
- PowerLinux (Red Hat, SUSE, and Ubuntu Linux distributions)
- IBM® i Version 7.2, and later
See Requirements for the VM Recovery Manager DR solution for more information.
- Can the VM Recovery Manager DR solution work in the presence of other high availability and disaster recovery solutions in the current environment?
- Yes, if the cluster management of the virtual machines that are covered under other high availability and disaster recovery solutions are handled separately and outside of the KSYS subsystem. A specific virtual machine can be included in only one high availability and disaster recovery solution.
- What is the minimum version of HMC that must be used for this solution?
- See Requirements for the VM Recovery Manager DR solution.
- What is the minimum version of VIOS that must be used for this solution?
- See Requirements for the VM Recovery Manager DR solution.
- What is KSYS?
- The KSYS (also known as controlling system) is a controlling software for the disaster recovery operation that operates in an IBM AIX 7.2 with Technology Level 1 Service Pack 1 (7200-01-01), or later logical partition in the backup site and controls the entire cloud environment for the VM Recovery Manager DR solution. The KSYS is responsible for carrying out recovery actions if a disaster or a potential disaster occurs.
- Can I test the disaster recovery operation without an actual disaster?
- Yes. The VM Recovery Manager DR solution performs failover rehearsal at the backup site in the disaster recovery environment, without disrupting the production workloads or the storage replication from the active site to the backup site. For more information, see Failover rehearsal of the disaster recovery operation.