HP P4000 9.0 HP StorageWorks P4000 Multi-Site HA/DR Solution Pack User Guide - Page 9

When to use Network RAID-10+2

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When to use Network RAID-10+2 Using Network RAID-10+2 offers a level of data protection that enables the Multi-Site SAN to sustain a complete failure at one site and still maintain replicated data at the other site. For instance, with Network RAID-10+2 there are four copies of data for the volume on the SAN. In a two-site configuration, the Multi-Site SAN software puts two of the four copies in one site and the remaining two in the other. If a site fails, the remaining site still has two copies and remains fault-tolerant. 1. Volumes are configured with Network RAID-10+2 Figure 1 Sample configuration for two-site, data protection level Network RAID-10+2 . Configuring sites and quorum managers to achieve optimal high availability and redundancy Several recommended site configurations can be used with the Multi-Site SAN software. These configurations provide varying levels of availability and redundancy. Table 2 on page 10 shows the recommended configurations. Select the one that best matches your environment. P4000 Multi-Site HA/DR Solution Pack user guide 9

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When to use Network RAID-10+2
Using Network RAID-10+2 offers a level of data protection that enables the Multi-Site SAN to sustain
a complete failure at one site and still maintain replicated data at the other site. For instance, with
Network RAID-10+2 there are four copies of data for the volume on the SAN. In a two-site
configuration, the Multi-Site SAN software puts two of the four copies in one site and the remaining
two in the other. If a site fails, the remaining site still has two copies and remains fault-tolerant.
1. Volumes are configured with Network RAID-10+2
Figure 1 Sample configuration for two-site, data protection level Network RAID-10+2
.
Configuring sites and quorum managers to achieve optimal high availability
and redundancy
Several recommended site configurations can be used with the Multi-Site SAN software. These
configurations provide varying levels of availability and redundancy.
Table 2
on page 10 shows the
recommended configurations. Select the one that best matches your environment.
P4000 Multi-Site HA/DR Solution Pack user guide
9