Disc-o-tech

Article Abstract:

A buyer's guide to DVD and CD-rewritable drives is presented. Graphics professionals who work with large amounts of data find that durable, high-capacity storage has greatly dropped in price and that optical disks are ideal for intermediate backup. CD-ROM drives have reached speeds as high as 32x and cost less than 4x drives did several years ago, moving over 2MB of data per second. DVD (Digital Versatile Disk) is a new format that is currently primarily a read-only technology, but the first DVD-RAM drives are hitting the market. Key considerations include maximum single-side capacity, which will be greatly boosted by rewritable DVD formats; write-once recording speed, which is 2x in most CD-RW drives but 4x in a few Yamaha models; maximum read speed; buffer memory; the type of hardware interface used, such as SCSI or ATAPI; hardware mounting procedures; and dynamic optimal power calibration. Compatibility is also a major issue.

Design and construction, Disk drives, DVD drive, DVD drives, CD-ROM Drive, CD-ROM drives

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Maximum-security storage: when you want the fastest, safest storage around, you want RAID

Article Abstract:

RAID (Redundant Array of Inexpensive Disks) hard drive systems can offer significantly faster read/write performance and better fault-tolerance data security than single drive systems. RAID systems use either a special hardware controller or RAID controller software to tie multiple hard drives together. Data is written to different drives according to the controller scheme. Because multiple drive heads are involved in writing and reading data, access time can be improved significantly over single drive head systems. Also data security is enhanced by storing files across several different drives, so that if one drive fails, the others will have some or all of the data. RAID systems vary by configuration and price. RAID systems are designated Level 0-5 depending upon configuration, fault tolerance, speed and expense. Publishers tend to use Levels 0, 3 and 5.

Technology overview, RAID array system, RAID arrays, Fault tolerant computer systems, Fault tolerance (Computers), Technology Information

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Spinning the hits

Article Abstract:

A buyer's guide of industrial strength, optical jukeboxes is presented, including offerings from 16 different companies. Information presented includes list price, maximum storage capacity, average media swap time and bundled/optional software among other details. Prices range from $2,195 to $119,995. All of the optical jukeboxes covered have SCSI-2 connections as most large-capacity jukeboxes use a high-speed hardware interface to connect to a server or a host computer.

Computer storage devices

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