From time to time I get asked how to turn on the statistics logging functions on a VNX array so that a customer can see what is going on inside of the box. To go along with that same request I have also included the instructions on how to pull those stats from the array so you can send them to your EMC team or partner.
Turning stats logging on
- After Logging into the array click on the systems serial number in the upper left hand area of Unisphere.
- Next click on the “System” button in the upper ribbon.
- On the System menu select “Monitoring and Alerts”
- On the Monitoring and Alerts menu select “Statistics”
- Finally in the Settings area on the Statistics page select “Performance Data Logging”. It is the top option on the left side.
- A box will popup with several options on it. You will want to make sure that “Periodic Archiving” is checked, and check the box next to “Stop Automatically After” (and normally I leave this at 7 days, but adjust as needed). Finally make sure to click “Start” before closing this box.
- After starting stats just sit back and wait for the time period you selected to go by, after it has passed you can return to the SAN and retrieve the stats archives and send them to your EMC partner or EMC SE as needed.
Retrieving stats archives
To collect the stats from the array follow steps 1 – 4 from the previous section, then proceed with the following steps:
- Once you are on the Statistics page, click on “Retrieve Archive” from the Archive Management panel. (4th option down on the right side)
- A box will pop up that looks much like a basic file manager. In the “Archives on SP” box you will find the archives of that stats. You can select all of the relevant archive files which will end in .NAR or .NAZ. then select a Save As location. And finally click Retrieve. Make sure to also switch over to SPB and collect the NAR/NAZ’s from that storage processor too!
- After clicking retrieve the stats archives will download to your local PC. From here you can select “Done” on the Retrieve Archives box and then create a ZIP file from all of the NAR/NAZ files. They are now ready to go to your EMC Partner or SE Team.
The only other thing required to generate the pretty graphs and heat maps is an SP Collect from one of the SP’s in the system. Typically EMC will have you upload all of this data to their FTP server (they will provide an account). Or if you are working with me I will either webex in and upload the files directly from your machine, or have you send them to my FTP server.