Compaq ProLiant 1200 Manual page 10

ECG0094/1197
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The Compaq DLT Library (Figure 5) provides unattended, automated backup. It has a cable
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management arm to prevent cable crimping or loss; high-capacity fans for significant cooling
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headroom, even for future higher speed drives; the ability to detect contaminated heads and notify
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the system administrator; a robotic mechanism and face plate of Teflon-impregnated polycarbonate
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to reduce drive and cartridge wear while minimizing the chance of contaminating the cartridge in
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the drive; and drive redundancy capabilities, with online drive replacement to eliminate downtime.
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Figure 5: Interior view of the DLT Library showing the robot and magazines with tapes.
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For more information about the Compaq DLT Library, see technology brief 272A/0797, Compaq
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DLT Library Technology.
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Power
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Compaq's power supply and power management technologies implement the latest developments to
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help ensure consistent, properly regulated power to the server
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the event of a complete external power failure. The design and testing phases of power supply
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development include rigorous testing to help ensure superior performance.
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On the Compaq ProLiant 6000, 6500, and 7000 servers, power supplies can be arranged in an n+1
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. . configuration, where n equals the number of power supplies required to run the system. Power
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supplies share the load; one can fail without a loss of power to all components.
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With n+1 redundancy of hot plug power supplies, a system can quickly be brought back to a
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. . redundant configuration, without having been shut down. The power rails and control signals are
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isolated: In 98 percent of hot plug power supply failure events, other power supplies are not
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. . affected by the failure of one.
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Eliminating Single Points of Failure (cont.)
and to help prevent data loss in