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System Overview

Dell™ PowerVault™ 715N Systems Service Manual

Overview Power Protection Devices
System Features Other Documents You Might Need
Service Features Technical Specifications

Overview

Your network attached storage (NAS) appliance enables you to easily add storage to a workgroup, small office, or small business network and offload the file management responsibilities from the server. The NAS appliance is a "headless" device, which means it has no keyboard, mouse, or monitor, but can be managed through the network or by using console redirection through a serial connection. The system offers the data security capabilities of general-purpose servers. 

This document provides basic information about the system features, service features, and specifications. 


System Features

The system offers the following major features:

The following software is included in the system:


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:

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 Laboratories (UL) safety-approved.


Other Documents You Might Need

The following documentation is included with your system:

You might also have one or more of the following documents:


Technical Specifications

Processor

Microprocessor type Intel Celeron microprocessor with an internal bus speed of at least 850 MHz or an Intel Pentium III microprocessor with an internal bus speed of at least 1 GHz
Math coprocessor internal to microprocessor


Expansion Bus

Bus types PCI bus
Expansion slots one 32-bit, 33-MHz slot

Memory

Memory module sockets two ECC PC-133  SDRAM DIMM sockets
Memory module capacities 128-, 256-, and 512-MB registered SDRAM DIMMs; must be rated for 133-MHz operation
Minimum RAM 256 MB for early systems with a SN1A system board, or 384 MB for later systems with a SN1B system board

Drives

IDE hard drives four 1-inch, internal hard drives with capacities of at least 40 GB

External Ports and Connectors

Serial   one 9-pin connector UART 16550-compatible
NIC two RJ-45 connectors for connection to internal embedded NICs (Intel 82559 10/100 Ethernet controllers)


Power

Wattage one 162-W power supply 
Input voltage 100- to 240-V at 47–63 Hz, autoranging
Output voltages
and maximum
current
+5 VDC at 15 A
+3.3 VDC at 8 A
+12 VDC at 8 A
–12 VDC at 0.1 A
+5 Vfp (volts flea power) at 1 A
Backup battery CR2032 3-V lithium coin cell


Physical

      Height 4.2 cm (1.6 inches)
      Width 42.5 cm (16.7 inches)
      Depth 46.3 cm (18.2 inches)
      Weight 9.5 kg (21 lb)  maximum configuration


Environmental

Temperature:
      Operating 10°C to 35°C (50°F to 95°F) at 10,000 feet above sea level
10°C to 40°C (50°F to 104°F) at sea level
      Storage –40°C to 65°C (–40°F to 149°F)
Relative humidity:
      Operating 20% to 80%, noncondensing
      Storage 5% to 95%, noncondensing 
Maximum vibration:
      Operating bottom only tested (negative z-axis) at 0.25 G zero-to-peak, at a sweep of 3 to 200 Hz at 0.5 octave per minute
      Non-operating all six sides tested (positive and negative x, y, and z axes) at 
0.5 G  (sinusoidal wave) zero-to-peak, at a sweep of 3 to 200 Hz at 0.5 octave per minute
Maximum shock:
      Operating half sine wave 31 G (bottom only tested) with pulse duration of 2.6 ms or less (20 inches/s [51 cm/s]) 
      Storage (non-operating
      half sine wave)
71 G (all six sides tested) with pulse duration of 2 ms or less (35 inches/s [89 cm/s]) 
Altitude:
      Operating –15.2 to 3,048 m (–50 to 10,000 ft)
      Storage –15.2 to 10,668 m (–50 to 35,000 ft)

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