Best Practices for Designing Highly Available Storage – FC SAN Perspective

Yesterday, I wrote about the Host Perspective of Designing Highly Available Storage. Today I am going to talk about the Fiber Channel SAN Perspective what it takes. Perhaps this is a small post.

  • At least two paths between the hosts and the storage system are required for high availability. Ideally, the cabling for these paths should be physically separated.

  • These paths should be handled by separate switching, if not directly connecting hosts and storage systems. This includes redundant, separate HBAs, and attachment to both of the storage system’s storage processors.

  • Path management software such as PowerPath and dynamic multipathing software on hosts (to enable failover to alternate paths and load balancing) are recommended.

  • For device fan‐in, connect low bandwidth devices such as tape, and low utilized and older, slower hosts to edge switches or director blades.


About Prasenjit Sarkar

Prasenjit Sarkar is a Product Manager at Oracle for their Public Cloud with primary focus on Cloud Strategy, Oracle Openstack, PaaS, Cloud Native Applications and API Platform. His primary focus is driving Oracle’s Cloud Computing business with commercial and public sector customers; helping to shape and deliver on a strategy to build broad use of Oracle’s Infrastructure as a Service (IaaS) and Platform as a Service (PaaS) offerings such as Compute, Storage, Java as a Service, and Database as a Service. He is also responsible for developing public/private cloud integration strategies, customer’s Cloud Computing architecture vision, future state architectures, and implementable architecture roadmaps in the context of the public, private, and hybrid cloud computing solutions Oracle can offer.