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Vol. 4 No. 9 November 2005

Tape bulks up to keep pace with disk

Is the amount of data a tape can store more important than how fast it can write it? Judging by some of the new drives hitting the market, tape vendors seem to think so. From one generation to the next, tape platforms are routinely doubling in capacity, while their performance is increasing at a much lower rate. For example, Quantum's new DLT-V4, the successor to DLT VS160, has twice its predecessor's capacity at 160GB native, but has only increased its native throughput by 25%--from 8MB/sec to 10MB/sec. Similarly, Quantum's roadmap for the next generation of Super DLT drives, the DLT-S4, will see capacity swell by 166% to 800GB, while performance increases by only 67% to 60MB/sec. The ability to hold more data is particularly important for tape drives that ship with entry-level servers, says Mark O'Malley, Quantum's product marketing manager. That's because today, most entry-level servers can ship with several hundred gigabytes of internal disk drives. Furthermore, Quantum's market research shows that low-end server buyers have...

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Features in this issue

  • Quality Awards: What are the best midrange arrays?

    Midrange array users are a generally satisfied group, according to the latest Diogenes Labs-Storage magazine Quality Awards survey. While all midrange array vendors fared quite well in this third installment of our awards program, the vendor that snared top honors might surprise some people.

  • Easing away from ESCON

    by  Alex Barrett

    ESCON, the protocol that pre-dated FICON as a systems-to-storage connection, is incompatible with the newer FICON-based systems. This tip looks at various ways you can tackle this dilemma.

  • Secure your backups

    The headlines tell the story: Lost tapes can jeopardize the confidentiality of personal information and cause public-relations woes for those companies charged with safeguarding that data. Encryption can solve the problem, but implementing tape encryption isn't so easy, as performance issues could impact backup windows.

Columns in this issue