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MAID reduces power
Alpine Bank installed the Assureon systems with AutoMAID in mid-2007. Brown says the AutoMAID function spins down disks depending on how often data is accessed. For example, Level 1 retracts the hard drive read/write heads and responds to a request from data in less than a second. Level 2 slows the drive from 7,200 rpm to 4,000 rpm and spins back to full speed in less than 15 seconds at the first data request. Level 3 puts the drive in light sleep without turning it off, and it can take 30 seconds to respond to a request. Alpine Bank uses Level 1 AutoMAID for data that hasn't been accessed for five minutes and Level 2 for data that hasn't been accessed for 60 minutes.
"We're a local community bank using optical devices," says Brown. "We put in a new document management system and had the option of doing optical again, which is slow." The optical drives also take up a lot of space, he notes, at about 30 square inches. The Nexsan systems took up
| about a quarter of a rack, he adds. Brown estimates the bank will save at least 25% in power costs due to the Assureon purchase, and now the company is headed down the virtualization path--an IT project with a clear-cut green advantage.
This was first published in October 2008