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System Overview: Dell PowerEdge 2550 Systems Service Manual
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System Overview: Dell™ PowerEdge™ 2550 Systems
Service Manual
The system, which has single or dual Intel® Pentium® III
microprocessors, is an ultra-slimline,
full-featured, rack-mounted server. The system provides a robust, reliable,
rack-optimized platform on which both large and small customers can deploy their
mission-critical applications.
This section describes the system’s major hardware and software
features, provides information about the indicators and controls on the system's front
panel, and discusses connecting external devices.
The system offers the following major features:
- One or two Pentium III microprocessors.
This microprocessor incorporates new instructions and data types as well as a technique
called single instruction, multiple data (SIMD) that allows the microprocessor to process
multiple data elements in parallel, thereby improving overall system performance.
256KB of SRAM level 2 (L2) cache is on die and runs at the microprocessor's core speed.
Math coprocessor functions are provided by the microprocessor. A separate and external
math coprocessor chip is not used or required.
The first screen of the System Setup program lists the microprocessor speed, front-side
bus (processor bus), and the L2 cache size. For more information, see "Using the System Setup Program."
- Front side bus with an external bus speed of 133 MHz.
- Support for symmetric multiprocessing (SMP) is available by installing a second Pentium
III microprocessor. SMP greatly improves overall system performance by dividing
microprocessor operations between the two independent microprocessors. To take advantage
of this feature, you must use an operating system that supports SMP, such as Microsoft®
Windows NT® Server 4.0 (or later version) or Novell® NetWare® 4.2 (or later version).
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NOTE: If you decide to upgrade the
system by installing a second microprocessor, you must order a microprocessor upgrade kit
from Dell. Not all versions of the Pentium III microprocessor work properly as a second
microprocessor. The upgrade kit from Dell contains the correct version of the
microprocessor for use as a second microprocessor as well as instructions for performing
the upgrade. Both microprocessors must have the same part number, revision (or
stepping) code, internal operating frequency, and cache size. |
- A minimum of 128 MB of system memory, upgradable to a maximum of 4 GB
by installing matched pairs of 64-, 128-, 256-, 512-MB, or 1-GB registered synchronous
dynamic RAM (SDRAM) dual in-line memory modules in the four sockets on the system board.
- A BIOS that resides in flash memory and can be upgraded if required.
- Up to five 1-inch hot-pluggable SCSI hard-disk drives.
- A power supply distribution board to accommodate up to two independent power supplies.
One power supply is standard; a second can be added to make the system redundant.
- A single 1.44-MB 3.5-inch diskette drive.
- An IDE CD-ROM drive.
The system board includes the following features:
- Three full-length 64-bit, 33-MHz PCI slots, located in a
removable expansion-card cage.
- An integrated Intel 82559 10/100-Mbps NIC, which provides an Ethernet interface.
- A Gigabit 64-bit/66-MHz PCI Ethernet controller.
- An integrated Adaptec AIC-7899 Ultra3 160/m SCSI host adapter that provides
two SCSI channels and supports up to five SCSI hard-disk drives (four 1-inch
hard-disk drives via a SCSI backplane board and one 1-inch hard-disk drive via the
peripheral bay). The SCSI backplane automatically configures SCSI ID numbers and SCSI
termination on individual hard-disk drives, greatly simplifying drive installation.
- An optional integrated RAID controller.
- An integrated VGA-compatible video subsystem with an ATI RAGE XL video controller. This
video subsystem contains 8 MB of SDRAM video memory (nonupgradable). Maximum resolution is
1600 x 1200 x 16.7 million colors (noninterlaced).
- An integrated National Semiconductor PC97317 super I/O controller that controls the
bidirectional parallel port, two serial ports, keyboard, mouse, and diskette drive. The
parallel port can be set to operate in the following modes via the Parallel Mode option in
the System Setup program: output-only (AT-compatible), bidirectional (PS/2-compatible).
- Integrated server management circuitry that monitors operation of the system fans as
well as critical system voltages and temperatures. The integrated server management
circuitry works in conjunction with the Dell OpenManage™ Server Agent software.
- System board support for the Dell OpenManage™ Remote Assistant software when the
optional Dell OpenManage Remote Assistant Card II (DRAC II) is installed, which provides
additional local and remote server management.
- PS/2-style keyboard and mouse ports, dual USB ports, and two 9-pin serial ports.
Standard systems include a combined 3.5-inch diskette drive and an IDE CD-ROM drive
installed in an externally accessible bay and a SCSI hard-disk drive installed in slot 0.
The following software is included in the system:
- Video drivers for displaying many popular application programs in high-resolution modes.
For more information on these drivers, see “Using the Dell OpenManage Server
Assistant CD” in the User's Guide.
- SCSI device drivers that allow the operating system to communicate with devices attached
to the integrated SCSI subsystem. For more information on these drivers, see
"Installing and Configuring SCSI Drivers" in the User's Guide.
- The System Setup program, which can be accessed at system boot
to quickly view and change the system configuration information.
- Enhanced security features, including a system password and a setup password, are
available through the System Setup program.
- Diagnostics for evaluating the system's components and devices. For information on using
the system diagnostics, see “Using the Dell OpenManage Server Assistant CD”
in the User's Guide or “Running the Dell
Diagnostics.”
The system includes the following service features to make
troubleshooting and repair easy and effective, in most cases without tools or service
aids:
- Dell Diagnostics, which checks for hardware problems (if the system
can boot).
- Embedded server management hardware, which monitors temperatures and
voltages throughout the system and notifies you if the system overheats, if a system
cooling fan malfunctions, or if a power supply fails.
- Optional redundant, hot-pluggable power supplies.
- Optional redundant, hot-pluggable RAID hard-disk drives.
The system chassis simplifies removing and replacing system
components. You can replace microprocessors or memory modules without removing the system
board. The Dell-designed SCSI backplane board and hard-disk drive carriers eliminate the
extensive cabling and drive configuration usually required for a SCSI subsystem.
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| Microprocessor
type |
dual Intel
Pentium III microprocessors with a minimum internal operating frequency of 933 MHz |
| Front side bus |
133 MHz |
| Internal cache |
256KB of SDRAM internal to
microprocessor |
| Math coprocessor |
internal to microprocessor |
|
| Bus types |
PCI bus |
| Expansion slots |
three full-length dedicated 64 bit 33 MHz PCI slots: PCI1 through PCI3 |
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| DIMM sockets |
four 72-bit wide, 168-pin sockets |
| DIMM capacities |
64-, 128-, 256-, 512-MB, or 1-GB
registered SDRAM DIMMs; must be certified for 133-MHz operation |
| Minimum RAM |
128 MB |
| Maximum RAM |
4 GB (using 1-GB registered SDRAM DIMMs) |
| External cache |
none |
|
| Diskette drive |
3.5-inch, 1.44-MB diskette drive included
with standard system |
| Tape drive |
20 GB and higher (optional) |
| SCSI hard-disk drives |
up to four slots in hard-disk drive bay
support formatted capacities of 9 GB and higher |
| SCSI devices |
an internal SCSI backplane provides a
physical connection, hot-plug capability with RAID controller, termination, and automatic
configuration for up to five internal SCSI hard-disk drives; an integrated Adaptec Ultra3
AIC-7899 SCSI host adapter |
| CD-ROM drive |
24X enhanced IDE CD-ROM drive included
with standard system |
|
| Serial |
two 9-pin connectors |
| Parallel (bidirectional) |
25-pin connector |
| Video |
15-pin connector |
| PS/2-style keyboard |
six-pin mini-DIN connector |
| PS/2-compatible mouse |
six-pin mini-DIN connector |
| USB |
two USB-compliant 4-pin
connectors |
| Ethernet |
two RJ45 connectors for
connection to the integrated NIC (Intel 82559 10/100-Mbps Ethernet controller) and Gigabit
Ethernet controller |
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| Video type |
integrated ATI-RAGE XL PCI
video controller; VGA connector |
| Video memory |
8-MB SDRAM |
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| Hot-pluggable DC
power supply: |
| Wattage |
330 W (each supply) |
| Heat
dissipation |
1580 BTU/hr (maximum) |
| Input
voltage |
100 to 240 V at 50–60 Hz
autoranging |
Output
voltages
and maximum
current |
+5 VDC at 35 A
+3.3 VDC at 10 A
+12 VDC at 18 A
–12 VDC at 0.8 A
–5 VDC at 0.3 A
+5 Vfp (volts flea power) at 1.2 A |
| Backup battery |
3-V CR2032 lithium coin cell |
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| Rack mount (2U): |
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| Height |
8.4 cm (3.3 inches) |
| Width |
42.4 cm (16.7 inches) |
| Depth |
66.8 cm (26.3 inches) |
| Weight |
15.87 kg (35.0 lb) minimum
configuration
24.94 kg (55.0 lb) maximum configuration |
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| Temperature: |
| Operating |
10°C to 35°C (50°F to
95°F) |
| Storage |
–40°C to 65°C
(–40°F to 149°F) |
| Relative humidity: |
| Operating |
8% to 80% (noncondensing) 10%
per hour gradient |
| Storage |
5% to 95% (noncondensing) |
| Maximum vibration: |
| Operating |
0.25 G (half-sine wave) at a
sweep of 3 to 200 Hz for 15 minutes |
| Storage |
0.5 G at 3 to 200 Hz for 15
minutes |
| Maximum shock: |
| Operating |
six consecutive shock pulses
in the positive and negative x, y, and z axes (one pulse on each side of the system)
at 41 G for 2 milliseconds |
Storage
(non-operational) |
six consecutive shock pulses
in the positive and negative x, y, and z axes (one pulse on each side of the system) at 71
G for 2 milliseconds |
| Altitude: |
| Operating |
–16 to 3048 m (–50
to 10,000 ft) |
| Storage |
–16 to 10,600 m (–50
to 35,000 ft) |
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