Data protection level – HP StoreVirtual 4000 Storage User Manual
Page 146
Data protection level
Seven data protection levels are available, depending upon the number of available storage
systems in the cluster.
Table 44 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.
146
Provisioning storage