HP StorageWorks Smart Tiers

Metrocluster with Continuous Access for P9000 and XP Version A.11.00 includes support for Smart Tiers on HP StorageWorks P9000 Disk Array family. Using Smart Tiers one can configure the storage consisting of multiple kinds of hard disk drives including SSD, SAS, and SATA. All restrictions and guidelines that are applicable to HP StorageWorks P9000 Smart Tiers are applicable in the Metrocluster environment. For information on HP StorageWorks P9000 Smart Tiers, see the HP StorageWorks P9000 Provisioning for open systems user guide at : http:// bizsupport1.austin.hp.com/bc/docs/support/SupportManual/c02535118/c02535118.pdf.

Creating the Cluster

Create the cluster or clusters according to the process described in the Managing Serviceguard user’s guide. In the case of a metropolitan cluster, create a single Serviceguard cluster with components on multiple sites. In the case of Continentalclusters, create two distinct Serviceguard clusters on different sites.

NOTE: Do not configure an P9000 or XP series paired volume, PVOL or SVOL, as a cluster lock disk. A cluster lock disk must always be writable. Since it cannot be guaranteed that either half of a paired volume is always writable, neither half may be used as a cluster lock disk. A configuration with a cluster lock disk that is part of a paired volume is not a supported configuration.

Preparing the Cluster for Data Replication

This section assumes that you have already created one or more Serviceguard clusters for use in a disaster tolerant configuration. The following procedures will prepare Serviceguard clusters for use with Continuous Access P9000 or XP data replication in a metropolitan or Continentalclusters.

•Creating the RAID Manager Configuration

•Configuring a remote array RAID Manager instance

•Defining Storage Units

•Configuring Packages

Creating the RAID Manager Configuration

Use these steps to create the configuration:

1.Ensure that the P9000 or XP Series disk arrays are correctly cabled to each host system that will run packages whose data reside on the arrays.

Each P9000 or XP Series disk array must be configured with redundant Continuous Access links, each of which is connected to a different LCP or RCP card. To prevent a single point of failure (SPOF), there must be at least two physical boards in each XP for the Continuous Access links. Each board usually has multiple ports. However, a redundant Continuous Access link must be connected to a port on a different physical board from the board that has the primary Continuous Access link. When using bi-directional configurations, where data center A backs up data center B and data center B backs up data center A, you must have at least four Continuous Access links, two in each direction. Four Continuous Access links are also required in uni-directional configurations in which you want to allow failback.

2.Install the Raid Manager software for either P9000 or XP on each host system depending on each host system depending on the disk array used in your environment.

3.Edit the /etc/services file, adding an entry for the Raid Manager instance to be used with the cluster.

The format of the entry is: horcm<instance-number><port-number>/udp

For example:

164 Building Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access for P9000 and XP