HP P4000 9.0 HP StorageWorks P4000 SAN Solution User Guide - Page 191
Former terminology in release 8.1 and earlier, Data protection level
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capacity utilization and similar high availability to Network RAID-10 and Network RAID-10+1. Because data is stored redundantly on different storage systems, all data protection levels are tied to the number of available storage systems in a cluster. Former terminology in release 8.1 and earlier Before release 8.5, you configured volumes with replication levels. Volume Replication Level None 2-Way replication 3-Way replication 4-Way replication - - Data Protection Level Network RAID-0 (None) Network RAID-10 (2-Way Mirror) Network RAID-10+1 (3-Way Mirror) Network RAID-10+2 (4-Way Mirror) Network RAID-5 (Single Parity) (new) Network RAID-6 (Dual Parity) (new) Data protection level Six data protection levels are available, depending upon the number of available storage systems in the cluster. Table 40 Setting a data protection level for a volume With this number of available storage systems in cluster 1 Select any of these data protection levels • Network RAID-0 (None) For this number of copies • One copy of data in the cluster. • Network RAID-0 (None) • One copy of data in the cluster. 2 • Network RAID-10 (2-Way Mirror) • Two copies of data in the cluster. • Network RAID-0 (None) • One copy of data in the cluster. 3 • Network RAID-10 (2-Way Mirror) • Two copies of data in the cluster. • Network RAID-10+1 (3-Way Mirror) • Three copies of data in the cluster. At least 4 • Network RAID-0 (None) • Network RAID-10 (2-Way Mirror) • Network RAID-10+1 (3-Way Mirror) • Network RAID-10+1 (4-Way Mirror) • Network RAID-5 (Single Parity) • One copy of data in the cluster. • Two copies of data in the cluster. • Three copies of data in the cluster. • Four copies of data in the cluster. • Data striped on three storage systems and parity stored on fourth storage system. P4000 SAN Solution user guide 191
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