A customer in the financial needs full high availability and optimal write performance of an HP
StoreVirtual 4000 solution in case of a data center failure.
Which Network RAID level should you recommend?
A.
Network RAID 6
B.
Network RAID 10
C.
Network RAID 10+1
D.
Network RAID 10+2
Explanation:
Network RAID-0, Network RAID-5, and Network RAID-6 will not tolerate site failures.Network RAID 5 – Stores three data and one parity as a minimum configuration i.e 3+1 , meaning
three nodes as a starting point.
Network RAID 6 – Stores three data and two parity as a minimum configuration i.e 3+2 , meaning
five nodes are required initially.
Network RAID 10 – Stores two copies of each volume’s block, providing continuous data
availability across any single node failure.
Network RAID 10+1 – Stores three copies of each block for mission-critical data that needs to be
available despite any double node failure.
Network RAID 10+2 – used in situations where a cluster is divided between two locations, and the
data must be continuously available in the event of both a site failure and a node failure at the
alternate site (Campus SAN).
Full high availability and optional write performance of and HP StoreVirtual 4000
http://h20565.www2.hp.com/portal/site/hpsc/template.PAGE/public/kb/docDisplay/?sp4ts.oid=411
8659&spf_p.tpst=kbDocDisplay&spf_p.prp_kbDocDisplay=wsrpnavigationalState%3DdocId%253Dmmr_kc-0108305-
19%257CdocLocale%253Den%257CcalledBy%253DSearch_Result&javax.portlet.begCacheTok=
com.vignette.cachetoken&javax.portlet.endCacheTok=com.vignette.cachetoken
Network RAID10+1: Data is striped and mirrored across three or more storage systems. Three
copies of the Data in a volume configured with Network RAID10+1 are available and preserved in
the event that any two storage systems become unavailable. Best applications for Network
RAID10+1 are those that require data availability even if two storage systems in a cluster become
unavailable.
Network RAID10+2: Data is striped and mirrored across four or more storage systems. Four
copies of the Data in a volume configured with Network RAID10+2 is preserved in the event that
any three storage systems become unavailable. Network RAID10+2 are designed for Multi-Site
SANs to preserve data in the event of an entire site becoming unavailable. Best use for Network
RAID10+2 volumes is for data that must be synchronously replicated between two locations and
must remain fully redundant in the case of an entire site failure.