9.5.01 HP P4000 SAN Solution User Guide (AX696-96168, February 2012)

Data protection level
Seven data protection levels are available, depending upon the number of available storage
systems in the cluster.
Table 38 Setting a data protection level for a volume
For this number of copiesSelect any of these data protection levelsWith this number of
available storage systems
in cluster
• One copy of data in the cluster.• Network RAID-0 (None)
1
2
• One copy of data in the cluster.• Network RAID-0 (None)
• •Network RAID-10 (2–Way Mirror) Two copies of data in the cluster.
3
• One copy• Network RAID-0 (None)
• •Network RAID-10 (2-Way Mirror) Two copies
•• Three copiesNetwork RAID-10+1 (3-Way Mirror)
• •Network RAID-5 (Single Parity) Data striped on three storage systems
including single parity.
At least 4
• One copy• Network RAID-0 (None)
• •Network RAID-10 (2-Way Mirror) Two copies
•• Three copiesNetwork RAID-10+1 (3-Way Mirror)
• •Network RAID-10+2 (4-Way Mirror) Four copies
•• Data striped on four storage systems
including single parity.
Network RAID-5 (Single Parity)
At least 5
• One copy• Network RAID-0 (None)
• •Network RAID-10 Two copies
•• Three copiesNetwork RAID-10+1 (3-Way Mirror)
• •Network RAID-10+2 (4-Way Mirror) Four copies
•• Data striped on five storage systems
including single parity.
Network RAID-5 (Single Parity)
• Network RAID-6 (Dual Parity)
• Data striped on five storage systems
including dual parity.
At least 6
• One copy• Network RAID-0 (None)
• •Network RAID-10 Two copies
•• Three copiesNetwork RAID-10+1 (3-Way Mirror)
• •Network RAID-10+2 (4-Way Mirror) Four copies
•• Data striped on five storage systems
including single parity.
Network RAID-5 (Single Parity)
• Network RAID-6 (Dual Parity)
• Data striped on six storage systems
including dual parity.
At least 7
• One copy• Network RAID-0 (None)
• •Network RAID-10 Two copies
•• Three copiesNetwork RAID-10+1 (3-Way Mirror)
• •Network RAID-10+2 (4-Way Mirror) Four copies
•• Data striped on five storage systems
including single parity.
Network RAID-5 (Single Parity)
• Network RAID-6 (Dual Parity)
• Data striped on seven storage systems
including dual parity.
Provisioning volumes 143