Under maintenance scenarios, you might find the need to pause replication on a volume, or on the entire group.This works across physical topologies where your target my be at another site. The reasons for this can be many, but SANHQ usually gives you the first sign that something is up. If replication across groups is unable to occur, you’ll get notified right away that replication isn’t running.A replacement network cable fixed the problem, and the alarm went away. When I had a network port go down on the SAN, it was SANHQ that alerted me via email.EqualLogic Support helped me determine that my new switchgear wasn’t handling jumbo frames correctly. When I had a high number of TCP retransmits after changing out my SAN Switchgear, it was SANHQ that told me something was wrong.Here are some examples of how it has acted as the canary in the coalmine for me in my environment.
#DELL EQUALLOGIC SAN HQ SERIES#
While some of these warnings are never fun, it’s biggest value is that it can help prevent those larger, much more serious problems, which always seem to be a series of small issues thrown together. SANHQ has proven to be an effective tool for proactive monitoring and alerting of my arrays. It’s like your alarm clock next to the bed it’s difficult to overlook, but that’s the point. Sometimes good monitoring is downright annoying. There are various ways that it can help you do your job better. Take a few minutes and do a little digging. You’ll find an interesting assortment of graphs, and charts that help you decipher what is going on with your storage. Starting up the application, you might find something like this: If you want to see what your storage infrastructure is doing, do yourself a favor and run SANHQ.
![dell equallogic san hq dell equallogic san hq](https://www.vmadmin.co.uk/images/stories/storage/equallogic/sanhqinstall/2.jpg)
![dell equallogic san hq dell equallogic san hq](http://vbrainstorm.com/wp-content/uploads/2011/08/IMAG0609_thumb.jpg)
While the tool itself is “optional” in the sense that you don’t need to deploy it to use the EqualLogic arrays, it is an easy (and free) way to expose the powers of your storage infrastructure. So, what better way to help those unfamiliar with SANHQ than to describe how it helps me with my environment.
![dell equallogic san hq dell equallogic san hq](https://s2.studylib.net/store/data/018777343_1-ce6157800f49edb444650d6501538fe3-768x994.png)
But I’m surprised to hear that many are not. Many EqualLogic users are well versed with this tool, and may not find anything here that they didn’t already know. SANHQ allows for real-time and historical analysis of your EqualLogic arrays. Another tool that deserves a few words is SAN HeadQuarters (SANHQ). I’ve written in the past about leveraging their AutoSnapshot Manager for VM and application consistent snapshots and replicas. One of the benefits of investing in Dell/EqualLogic’s SAN solutions are the number of great tools included with the product, at no extra charge.