Alternative Setups; Designing The Network For The Multi-Site San; Alternative Multi-Site San Configurations - HP StorageWorks P4000 User Manual

Alternative setups

The Multi-Site SAN software supports many other valid configurations than the four illustrated in the
prior section.Table 3
Table 3 Alternative Multi-Site SAN configurations
Alternate configuration
More than one Multi-Site cluster in
the management group
More than three sites
Using Virtual Manager
Using Remote Copy with Multi-Site
SAN
Multiple subnet clusters in the same
site

Designing the network for the Multi-Site SAN

Good network design is a critical part of setting up a Multi-Site SAN that meets your needs. A good
Multi-Site SAN network encompasses the following attributes:
Reliability
High availability
High performance
This section contains information about the minimum recommended network design considerations
when planning a network to support a Multi-Site SAN.
on page 13 lists other possible configurations.
Description
Multiple clusters running within
the same management group.
There are more than three sites
in the cluster.
The Virtual Manager capability
remains in the product (a
manual process for recovering
quorum).
The cluster contains Remote
Copy, which like all other
SAN/iQ features, is compatible
with Multi-Site SAN.
The Multi-Site SAN features can
be used to set up clusters that
span multiple subnets in the
same site.
P4000 Multi-Site HA/DR Solution Pack user guide
Details
The Multi-Site SAN software supports
running many clusters in the same
management group. You simply need
to make sure that clusters have the same
number of storage systems in each site
for that particular cluster.
A particular cluster can only span up to
three sites. However, the Multi-Site SAN
software supports having more than one
cluster. The different clusters can span
different sites within the same cluster.
The Virtual Manager is used in two-site
configurations, and is not as commonly
used as the Failover Manager. For more
information about the Virtual Manager,
see the chapter "Special Managers" in
the HP StorageWorks SAN Solutions
Storage System User Guide.
You can use Remote Copy to replicate
data from a Multi-Site SAN to a Disaster
Recovery or Backup site. See the
chapter "Understanding and Planning
Remote Copy" in the Remote Copy User
Manual.
The Multi-Site SAN software can be
used to create clusters that span multiple
networks (subnets) in larger Enterprise
data centers. The storage systems all
reside in the same site. However, the
cluster must be Multi-Site if it is to con-
tain storage systems from different sub-
nets.
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