Storage area network based extended I/O metrics computation for deep insight into application performance

One or more non-transitory tangible media that includes code for execution and when executed by a processor is operable to perform operations comprising:

• monitoring by an integrated circuit device READ/WRITE commands in connection with a flow of an application executing in a Fibre Channel Storage Area Network (“FC-SAN”);
• determining from the monitored READ/WRITE commands a Logical Unit Number (“LUN”) I/O access pattern (“IAP”), comprising:
• determining an LBA identified in a first I/O command;
• determining an LBA identified in an immediately subsequent I/O command;
• designating the LUN IAP as sequential if the LBA identified in the first I/O command is one less than the LBA identified in the immediately subsequent I/O command;
• and
• designating the LUN IAP as random if the LBA identified in the first I/O command is not one less than the LBA identified in the immediately subsequent I/O access;
• storing the calculated at least one metric in a flow record associated with the flow;
• and
• using the calculated at least one metric to identify a storage device for use by the flow;
• wherein the calculated at least one metric is indicative of a performance of the application in the FC-SAN.

An apparatus comprising:

• a memory element configured to store data;
• and
• a processor operable to execute instructions associated with the data;
• the apparatus configured for:
• monitoring by an integrated circuit device READ/WRITE commands in connection with a flow of an application executing in a Fibre Channel Storage Area Network (“FC-SAN”);
• determining from the monitored READ/WRITE commands a Logical Unit Number (“LUN”) I/O access pattern (“IAP”), comprising:
• determining an LBA identified in a first I/O command;
• determining an LBA identified in an immediately subsequent I/O command;
• designating the LUN IAP as sequential if the LBA identified in the first I/O command is one less than the LBA identified in the immediately subsequent I/O command;
• and
• designating the LUN IAP as random if the LBA identified in the first I/O command is not one less than the LBA identified in the immediately subsequent I/O access;
• storing the calculated at least one metric in a flow record associated with the flow;
• and
• using the calculated at least one metric to identify a storage device for use by the flow;
• wherein the calculated at least one metric is indicative of a performance of the application in the FC-SAN.