Cable host servers to the ME484 JBOD
storage enclosure
This section describes the different ways that host servers can be connected to a ME484 JBOD storage enclosure.
Topics:
• Cabling considerations
• Cabling your ME484 JBOD storage enclosure
• Label the back-end cables
Cabling considerations
There are several methods to cable an ME484 JBOD storage enclosure to host servers and to other ME484 JBOD storage enclosures.
The specific configuration used depends on storage capacity, level of resiliency of both the host server and enclosure, and the operating
system being used.
Cable requirements for expansion enclosures
Observe the following cabling guidelines when connecting an ME484 to a host server:
• When connecting SAS cables to JBOD modules, use only supported HD mini-SAS x4 cables.
• Qualified HD mini-SAS to HD mini-SAS 0.5 m (1.64 ft.) cables are used to connect cascaded enclosures in the rack.
• The maximum enclosure cable length that is allowed in any configuration is 2 m (6.56 ft.).
• When adding more than two expansion enclosures, you may need to purchase additional cables, depending upon the number of
enclosures and cabling method used.
• You may need to order additional or longer cables when reverse-cabling a fault-tolerant configuration.
Cabling your ME484 JBOD storage enclosure
You can cable an ME484 JBOD storage enclosure to host systems and to other ME484 JBOD storage enclosures in three different
configurations:
• Single-path configuration – Uses a simplified cabling scheme, but does not provide redundancy or fault-tolerance. Use this cabling
scheme when the operating system or a higher-level application is being used for data resiliency.
• Symmetric multipath configuration – Uses a cascading configuration that provides path redundancy, but does not provide against
enclosure loss.
• Asymmetric multipath configuration – A high availability configuration that enables the host server to reach any enclosure if a path or
single enclosure is lost.
Single HBA and one ME484 JBOD storage enclosure
This configuration is valid with or without path redundancy on HBA port 1.
4
10 Cable host servers to the ME484 JBOD storage enclosure
To Next Page
Loading...