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Taking QoS implementation to a new level
This article is part of the Storage magazine issue of January 2013
An effective QoS implementation helps tunes data storage to meet the specific needs of applications. New tools that offer more automation are emerging to help. Practically every storage array vendor claims its box has quality of service (QoS) built in. To a degree, all these vendors are correct. The trouble, however, is how each one defines quality of service. If you define QoS as the features built into your array then, based on that loose definition, you have QoS capability. I checked Wikipedia for a common definition. The term QoS entered our vocabulary through telephony and networking technologies. The one sentence that caught my eye in the Wikipedia entry was, "Quality of service is the ability to provide different priority to different applications, users, or data flows, or to guarantee a certain level of performance to a data flow." This is probably the best description that can be applied to storage. The basic issue we've grappled with for decades is how to deliver the right storage performance to an application. ...
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Features in this issue
Solid-state storage vendors are touting "million IOPS" performance numbers. Here's what you need to know to see if those SSD performance benchmarks ring true.
Tiered data storage is now a storage best practice, accelerated by the use of solid-state storage. We survey how major vendors leverage solid-state to implement storage tiering.
NAS storage systems are the storage workhorses of most data centers; EMC's and Hitachi Data Systems' NAS entries lead a strong field in our satisfaction survey.
Convenience, preconfiguration and cost savings are among the reasons why our survey respondents say they're using converged systems.
Columns in this issue
Rich Castagna offers a list of five developments we all want to see in the data storage market in 2013 but probably won't. Why? Because vendors continue to drag their heels.
The Mayans blew it -- we're still here -- but storms like Sandy show that there's no replacement for a sound disaster recovery planning process.
ESG reviewed online file-sharing and collaboration apps to see if the market is finally maturing to a point where SMBs and enterprises alike can find a worthwhile IT investment.
An effective QoS implementation helps tunes data storage to meet the specific needs of applications. New tools that offer more automation are emerging to help.