 | ||
| Reviewing the configuration | ||
|---|---|---|
| Prev | Deploying SFW with Microsoft failover clustering in a campus cluster | Next |
| ||
| Reviewing the configuration | ||
|---|---|---|
| Prev | Deploying SFW with Microsoft failover clustering in a campus cluster | Next |
This configuration example describes a two-node campus cluster with each node at a separate site.
For an overview of campus clusters with Microsoft clustering or for recovery scenarios, refer to the following topics:
The two nodes can be located miles apart and are connected via a single subnet and Fibre Channel SAN. Each node has its own storage array and contains mirrored data of the storage on the other array. Each disk group should contain the same number of disks on each site for the mirrored volumes.
Microsoft clustering uses the quorum architecture, where the cluster database resides in the quorum resource. If you are using Microsoft clustering, adding SFW to the configuration protects the quorum disk from being a single point of failure in the cluster because SFW provides dynamic volumes and software mirroring of the quorum device. To avoid a single point of failure, set up the quorum as a dynamic mirrored device. This example includes the dynamic mirrored quorum and requires setting up two or more dynamic cluster disk groups in SFW - one or more cluster disk groups for the application and data and one for the dynamic mirrored quorum.
The example configuration does not include DMP. For instructions on how to add DMP to a clustering configuration:
See Overview of configuration tasks for adding DMP DSMs.
When you are installing SFW and Microsoft clustering together, remember the following:
A cluster using Microsoft clustering must be running to install SFW.
You need to set up the hardware and install the operating system and Microsoft clustering on all systems and establish the failover cluster before installing SFW. Installing SFW requires a reboot, but a reboot on the active cluster node causes it to fail over. Use a "rolling install" procedure to install SFW first on the inactive cluster node. Then move the cluster resources to the other node and install on the now inactive node.
After SFW is installed, create one or more cluster disk groups with SFW and set up the volumes for your application. At the same time, you can create the mirrored volume for the dynamic quorum resource.
SFW allows you to add fault tolerance to your data volumes. Mirroring of log volumes is recommended, and a mirrored striped RAID layout is recommended for your data volumes. SFW also offers multiple disk groups, multiple mirrors, capacity management and Automatic Volume Growth, online storage migration, performance tuning, hot relocation, dirty region logging, RAID-5 logging, Dynamic Multi-Pathing, and enhanced snapshot capabilities with FlashSnap.
