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DASD

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- DASD, pronounced DAZ-dee (Direct access storage device), is a general term for magnetic disk storage devices. The term has historically been used in the mainframe and minicomputer (mid-range computer) environments and is sometimes used to refer to hard disk drives for personal computers. A redundant array of independent disks (RAID) is also a type of DASD.

The "direct access" means that all data can be accessed directly in about the same amount of time rather than having to progress sequentially through the data.

Learn more about Disk drives

Best practices for solid-state drive storage technology: SSD best practices center on identifying I/O-intensive applications so that data storage technology can provide the greatest benefit to IT organizations.
Tiered storage tutorial: Find out what tiered storage is, the key technologies behind it, and how tiered storage can lower operational costs while improving application performance.
Podcast: Solid-state drives entering enterprise storage environments: Jeff Janukowicz, research manager at IDC for solid-state drives and hard drive components, discusses the impact SSDs are expected to have at the enterprise level.
Product Roundup: Solid-state drives in enterprise arrays and servers: Most storage vendors have announced support for SSDs, but only EMC is shipping, and every vendor has a different approach. No wonder storage administrators are confused.
Storage vendors debate where SSDs go in storage infrastructure: Tier 1 storage will eventually consist of solid-state disk technology. But right now, some observers aren't sure that SSD is ready for the enterprise.

CONTRIBUTORS:	Maury Smith
LAST UPDATED:	13 Oct 2006

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More resources from around the web:

-	SearchStorage.com provides news about and selected links to more information about various forms of storage.
-	The Storage Guide at Tom's Hardware site provides an explanation about hard disk drives.

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