Alright – if you’re here you likely already know what the Dell EqualLogic is and what MRTG is typically used for. You likely also know that there’s a (free) download from Dell called EqualLogic SAN Headquarters that can give you a ton of good information about your SAN. It has everything from volume capacity, replica capacity, firmware versions and even I/O information for the group(s) you have. Unfortunately, there’s a level of granularity that’s missing from SAN HQ. If you want to know which volume or volumes are getting hammered on a daily basis, which ones have higher read or write I/Os – you’re basically out of luck. The same goes for using the standard Group Manager application.
Here’s an example of what I mean:
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