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A customer plans to migrate data from a third-party storage system to an HP StoreVirtual 4330FC Storage System. The new storage system must contain 7.2 TB of usable space after network RAID 10 and hardware RAID 10 are configured. How many nodes does the customer need?
A. Three
B. Four
C. Six
D. Eight
Correct Answer: B
Explanation/Reference:
Network Raid : RAID-10
Network RAID-10 data is striped and mirrored across two storage systems. Network RAID-10 is the default data protection level assigned when creating a volume, as long as there are two or more storage systems in the cluster. Data in a volume configured with Network RAID-10 is available and preserved in the event that one storage system becomes unavailable.
Network RAID-10 is generally the best choice for applications that write to the volume frequently and don’t need to tolerate multiple storage system failures. Such applications include databases, email, and server virtualization. Network RAID-10 is also good for Multi-Site SANs. Using Network RAID-10 in a Multi-Site SAN ensures that data remains available in the event that one site becomes unavailable. However, if one site does go down, the
Network RAID-10 volumes are then not protected from complete system failure or reboot.
Basic Set-up : A Multi-Site SAN, with 4 HP P4330 FC nodes of 8×900 GB= 7200
Raw Capacity : 4x8x900GB = 28,8TB
Local RAID10 : 7,2 Usable
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