Virtual network design

network adapters. Platforms that will host VSAs and other virtual machines should have four ethernet (minimum 1 GB) network adapters so that two adapters can be dedicated to the VSA and iSCSI traffic.

The virtual switch or virtual network that is used for VSA should be at least a redundant Gigabit network, if possible. Performance and reliability can be improved even further by using more than two ethernet adapters in the iSCSI and VSA virtual networks or by using 10 GB for increased performance.

Using VSAs with HP StoreVirtual Storage

VSAs and physical platforms can be mixed in management groups. When mixing virtual and physical platforms, and mixing differently configured VSAs, you should take the following requirements and guidelines into consideration.

•Cloning VSAs

To clone a VSA, you must do so while the VSA is still in the Available Systems pool, before you add it to a management group. Cloning a VSA after it is in a management group is not supported.

NOTE: Configure the first VSA for RAID and Networking. Then create your clone with the hardware settings already configured.

•Running managers on physical platforms

When possible, locate all managers in a management group on physical platforms instead of VSAs, and ideally on the fastest platforms in the management group. While VSAs can run managers, physical platforms provide better performance and a lower likelihood that they will be rebooted for administrative reasons.

•Locating VSAs that are running managers on separate physical platforms

If VSAs are running managers, ensure that those VSAs reside on separate physical platforms. Otherwise, rebooting a single physical platform could cause a loss of quorum in the management group.

•Managing the performance impact of mixing platforms in clusters

Mixing VSAs built from different hardware in the same cluster also yields unpredictable performance. Typically the overall performance of the cluster is close to the aggregate average of the storage systems in the cluster.

Additionally, you may perceive performance degradation if a faster VSA fails, thereby causing volumes to fail over to a slower VSA. Such performance degradation is normal in a mixed cluster.

•Managing the storage capacity of mixing platforms in clusters

While clusters can contain storage systems with different capacities, all storage systems in a cluster operate at a capacity equal to that of the smallest-capacity storage system. The additional capacity on the VSA will operate according the same rules for physical storage systems in a cluster; that is, the VSA will operate at a capacity equal to that of the smallest capacity VSA in the cluster. See “Clusters and storage systems” in the HP StoreVirtual Storage User Guide for more information.

Adding storage capacity to a VSA

Add storage capacity to a VSA by adding up to 4 additional virtual disks for a total of 5 disks. Ensure that if you add capacity to a VSA in a cluster, you balance the capacity of all the storage

Virtual network design

TA688-96138 specifications

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HP TA688-96138 manual Virtual network design, Using VSAs with HP StoreVirtual Storage

Models: TA688-96138