Dell PowerVault 715N Instrukcja serwisowa - Strona 3
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Disk management through Dell OpenManage Array Manager.
Dell ActiveArchive™ snapshot software.
A
BIOS Setup utility
Diagnostics
for evaluating your system's components and devices. For more information about using the system
diagnostics, see your Installation and Troubleshooting Guide.
Service Features
The system includes the following service features to make troubleshooting and repair easy and effective, in most cases
without tools or service aids:
A temperature monitor that shuts down the system if the temperature exceeds the threshold setting.
System diagnostics, which checks for hardware problems.
PowerVault NAS Manager, which is used through a browser to monitor and manage the system.
A chassis and system board that simplifies removing and replacing components.
Microsoft Windows powered operating system online help (available through Terminal Services).
The system chassis simplifies removing and replacing system components. You can replace an expansion card, a
microprocessor, or DIMMs without removing the system board. The midplane board and hard- drive carriers eliminate the
extensive cabling and drive configuration usually required for a hard- drive subsystem.
Power Protection Devices
Devices are available that protect against power problems such as power surges, transients, and power failures. The
following subsections describe some of the devices.
Surge Protectors
Surge protectors are available in a variety of types and usually provide a level of protection commensurate with the cost
of the device. Surge protectors prevent voltage spikes, such as those caused during an electrical storm, from entering a
system through the electrical outlet. Surge protectors, however, do not offer protection against brownouts, which occur
when the voltage drops more than 20 percent below the normal AC line voltage level.
Line Conditioners
Line conditioners go beyond the overvoltage protection of surge protectors. Line conditioners keep a system's AC power
source voltage at a fairly constant level and, therefore, can handle brownouts. Because of this added protection, line
conditioners cost more than surge protectors—up to several hundred dollars. However, the devices cannot protect against
a complete loss of power.
Uninterruptible Power Supplies
UPS systems offer the most complete protection against variations in power because they use battery power to keep the
system running when AC power is lost. The battery is charged by the AC power while it is available, so once AC power is
lost, the battery can provide power to the system for a limited amount of time—from 15 minutes to an hour or so—
depending on the UPS system.
UPS systems range in price from a few hundred dollars to several thousand dollars, with the more expensive units
allowing you to run larger systems for a longer period of time when AC power is lost. UPS systems that provide only 5
minutes of battery power allow you to conduct an orderly shutdown of the system, but they are not intended to provide
continued operation. Surge protectors should be used with all UPS systems, and the UPS system should be Underwriters
for quickly viewing and changing the system configuration information.