Data protection level – HP LeftHand P4000 Virtual SAN Appliance Software User Manual
Page 143
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 copies
Select any of these data protection levels
With 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 copies
Network 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 copies
Network 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 copies
Network 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 copies
Network 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 copies
Network 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
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