DAS
Direct-attached storage (DAS) refers to a digital storage system directly attached to a server or workstation, without a storage network in between. It is a retronym, mainly used to differentiate non-networked storage from SAN and NAS.
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Highlights
Find out why solid-state drives (SSDs) are rapidly becoming a major factor in enterprise data storage arrays, and what you need to know about the multifaceted technology. Learn about SSD trends and future directions in this tutorial.
Vendors and analysts see SAS 2.0 taking over the enterprise, but some users see a lower-cost way to boost data storage performance in the new SATA 3.0 specification.
Promise Technology Inc., a supplier of sophisticated RAID storage solutions for enterprise and SMB customers, announced that NEC has selected Promise Technology’s SuperTrak 6G RAID controller cards for its 6Gb/s SAS server platforms.
IBM adds solid-state drive support to Data Facility Storage Management Subsystem (DFSMS); will add SSD-specific data placement and monitoring capabilities to software.
Storage admins will explore EMC's Symmetrix V-Max, and watch for updates on Clariion and solid-state drives at EMC World 2009 this week, although the economy could hurt attendance.

Once again Greg reviews some of the major storage related announcements during the last month, including the Sun saga with advice on what to do about it if you are considering buying from Sun and finally an alternative “Cow Economics” view of the IT vendors.
MAID and spin-down storage systems play into recent green IT and consolidation trends, and analysts predict most storage systems will one day offer the power-saving features.
Analysts say MAID is still not fully employed in data centers. But regulations mandating more power savings will help drive the technology, as will the rise of persistent data.










