Fewer Deaf Ears: HP's Noise Ratings for Office Servers
In a small office, there's no escaping a server's noise. In the previous noise-related posting we looked at entry-level servers from Fujitsu and Dell that should not drown out conversation, with decibels outputs of 32 and 38 decibels, respectively. This time we'll look at Hewlett-Packard servers.
In a small office, there's no escaping a server's noise. In the previous noise-related posting we looked at entry-level servers from Fujitsu and Dell that should not drown out conversation, with decibels outputs of 32 and 38 decibels, respectively. This time we'll look at Hewlett-Packard servers.While getting at them takes considerable digging, HP does indeed publish decibel ratings for its low-end tower servers, and, better yet, their decibel ratings are more precise, giving both L-WAd and L-pAm figures.
The first (L-WAd) is the upper-limit A-weighted sound level, meaning it has been mathematically "weighted" to emphasize the 3-6 kilohertz range, where the human ear is most sensitive. It is usually measured in bels. The second (L-pAm) is the average A-weighted noise one meter away and is typically measured in decibels (one-tenth of a bel.) L-pAm can be excepted to be a little lower than L-WAd. (In the previous posting, the Dell figure was evidently equivalent to L-WAd, while the Fujitsu figure was not qualified.)
Using the L-pAm figure seems more appropriate in office settings. In that regard, the entry-level ProLiant ML110 Generation 5 had an L-pAm rating of 34 decibels while operating and 26 decibels while idleï¿¼for the SATA model. The SAS model was rated at 40 and 34 decibels, respectively. SAS drives spin at 16,000 rpm and the SATA drive spin at 7,500 rpm, and presumably that accounts for the difference.
How Enterprises Are Attacking the IT Security EnterpriseTo learn more about what organizations are doing to tackle attacks and threats we surveyed a group of 300 IT and infosec professionals to find out what their biggest IT security challenges are and what they're doing to defend against today's threats. Download the report to see what they're saying.
Infographic: The State of DevOps in 2017Is DevOps helping organizations reduce costs and time-to-market for software releases? What's getting in the way of DevOps adoption? Find out in this InformationWeek and Interop ITX infographic on the state of DevOps in 2017.
Digital Transformation Myths & TruthsTransformation is on every IT organization's to-do list, but effectively transforming IT means a major shift in technology as well as business models and culture. In this IT Trend Report, we examine some of the misconceptions of digital transformation and look at steps you can take to succeed technically and culturally.