The Circle of (Storage) Life

Lee

Storage Life Cycle

By Lee LaFrese

Remember the Lion King? Simba starts off as a little cub, and his father, Mufasa, is king. Over time, Simba goes through a lot of growing pains but eventually matures to take over his father’s role despite the best efforts of his Uncle Scar to prevent it. This is the circle of life. It kind of reminds me of the storage life cycle only without the Elton John score!

Hardware Will Eventually Fail and Software Will Eventually Work

New storage technologies are quickly maturing and replacing legacy platforms. But will they be mature enough to meet your high availability, high performance IT infrastructure needs?

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You Can’t Do Performance Analysis with SMI-S and Other Myths

Brett

By Brett Allison

Some vendors are perpetuating the myth that SMI-S is not designed for performance management. Recently some of our customers asked a vendor to surface additional performance metrics through SMI-S. They received a response along the lines of: “SMI-S is not supposed to handle performance metrics; it is mainly for management. If you want performance metrics, you should buy our proprietary tool.”

While SMI-S has some limitations, the SMI-S Block Server Performance (BSP) defines a very rich set of storage system components for which metrics can be defined: System, Peer Controller, Front-end Adapter, Front-end Port, Back-end Adapter, Back-end Port, Replication Adapter, Volume, and Disks. The BSP further defines counters for reads, writes, read throughput, write throughput, read response time and write response time for each of the components. Coupled with the comprehensive configuration information available within the standard, the SMI-S standard provides a rich canvas for a client consuming SMI-S data to paint the performance profile of a vendor’s hardware.

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