Desktop Test System
Since the Watts Up? meters are our new NAS test power measurement tools, we thought it would be appropriate to run some NAS power tests. We're using the Netgear ReadyNAS 516, a six-bay system we recently reviewed.
All three units can record data internally, and the results can be imported to a PC. With the optional Real-Time software (a $72.95 add-on), you can watch the results on your PC as the system records them. For our use, we want as many samples per second as we can get, but all three of the units we're looking at today are limited to one sample per second. The unit actually samples at a rate of 2500 samples per second, but only updates one sample per second. You can set the unit to graph both the minimum and maximum samples collected in a one second period though. This lets us see the initial startup spikes from the HDD motors.
The .Net model adds Ethernet, and several special features that are tucked away, on the Watts Up? website. Via a monthly membership, the .Net can upload data to Watts Up?'s servers. End users log into the site to configure the meter, and download samples, in CSV file format. Watts Up? can also configure the meter to send the data to a FTP, either on your intranet, or on the internet. You just need to ask Watts Up? for the API.
Let's take a look at the three logging formats.