Which two capabilities are available when 7000-series systems are clustered?
A.
Allows load balancing among multiple heads
B.
Allows a peer appliance to provide service while repair is performed
C.
Provides clients with a unified filesystem namespace across multiple appliances
D.
Allows rolling upgrade of software
Explanation:
B:As an alternative to incurring hours or days of downtime while the head is
repaired, clustering
allows a peer appliance to provide service while repair or replacement is performed.
D: Clusters support rolling upgrade of software, which can reduce the business disruption
associated with migrating to newer software.
Note:It is important to understand the scope of the Sun ZFS Storage 7000 series clustering
implementation. The term ‘cluster’ is used in the industry to refer to many different
technologies with a variety of purposes. We use it here to mean a metasystem comprised of two
appliance heads and shared storage, used to provide improved availability in the case in which
one of the heads succumbs to certain hardware or software failures. A cluster contains exactly
two appliances or storage controllers.
Sun ZFS Storage 7000 System Administration Guide,Clustering,Features and Benefits