784 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
Redundant storage area network
A redundant SAN is a SAN configuration in which there is no single point of failure (SPOF). 
Therefore, data traffic continues no matter what component fails. Connectivity between the 
devices within the SAN is maintained (although possibly with degraded performance) when 
an error occurs. A redundant SAN design is normally achieved by splitting the SAN into two 
independent counterpart SANs (two SAN fabrics). In this configuration, if one path of the 
counterpart SAN is destroyed, the other counterpart SAN path keeps functioning.
Relationship
In Metro Mirror or Global Mirror, a relationship is the association between a master volume 
and an auxiliary volume. These volumes also have the attributes of a primary or secondary 
volume.
Reliability, availability, and serviceability
Reliability, availability, and serviceability (RAS) are a combination of design methodologies, 
system policies, and intrinsic capabilities that, when taken together, balance improved 
hardware availability with the costs that are required to achieve it. 
Reliability is the degree to which the hardware remains free of faults. Availability is the ability 
of the system to continue operating despite predicted or experienced faults. Serviceability is 
how efficiently and nondisruptively broken hardware can be fixed.
Remote fabric
The remote fabric is composed of SAN components (switches, cables, and so on) that 
connect the components (nodes, hosts, and switches) of the remote cluster together. 
Significant distances can exist between the components in the local cluster and those 
components in the remote cluster.
Remote Support Server and Client
Remote Support Client is a software toolkit that is in IBM Storwize V7000 and opens a 
secured tunnel to the Remote Support Server. Remote Support Server is in the IBM network 
and collects key health check and troubleshooting information that is required by IBM support 
personnel.
SAN Volume Controller
The IBM SAN Volume Controller (SVC) is an appliance that is designed for attachment to 
various host computer systems. The SVC performs block-level virtualization of disk storage. 
The IBM Spectrum Virtualize is a software engine of SVC (and Storwize family) that performs 
block-level virtualization of disk storage.
Secondary volume
Pertinent to remote copy, the volume in a relationship that contains a copy of data written by 
the host application to the primary volume. 
Secure Sockets Layer certificate
Secure Sockets Layer (SSL) is the standard security technology for establishing an encrypted 
link between a web server and a browser. This link ensures that all data passed between the 
web server and browsers remain private. To be able to create an SSL connection, a web 
server requires an SSL Certificate.