Cisco Cisco MCS 7845-I3 Hoja De Datos
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Data Sheet
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High availability on the Cisco MCS 7835-I2 is achieved through the following mechanisms:
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Redundant hot-swap power supplies
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Hot-swap single-attachment-station (SAS) hard drives configured using Redundant Array of
Independent Disks (RAID) 1
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Redundant hot-swap fans
Memory
The Cisco MCS 7835-I2 supports up to 48 GB of double-data-rate 2 (DDR2) memory. The
increased processor performance coupled with DDR2 memory allows you to retrieve and process
information quickly and efficiently. DDR memory executes twice the number of operations per
cycle than traditional synchronous dynamic RAM (SDRAM) memory, effectively doubling the data
exchange rate between memory and processors.
Variable-Speed Fan Support
The Cisco MCS 7835-I2 includes variable-speed fans to reduce operating noise. Through the use
of temperature sensors within the server, the speed of the fans is adjusted to maintain the proper
cooling, reducing the noise generated by the fans by operating them only when required and at a
speed based upon the cooling requirements.
Advanced Connectivity Technology
The Cisco MCS 7835-I2 supports IBM’s new NetBAY Advanced Connectivity Technology products
that help reduce Keyboard/Video/Mouse (KVM) costs by linking administrators’ chain systems
together with Category 5 cable. In addition to reducing overall costs, Advanced Connectivity
Technology reduces bulk cable clutter, making servers accessible and serviceable in the rack.
Serviceability
Light Path Diagnostics
The Cisco MCS 7835-I2 is equipped with Light Path Diagnostics, which provides a central
information LED panel (visible without removing the cover) and individual LED lights throughout
the system on items such as memory dual in-line memory modules (DIMMs), peripheral-
component-interconnect (PCI) slots, power supplies, and CPUs. IT can quickly view system status,
and service personnel can pinpoint the specific failing component, helping reduce downtime and
service costs. Availability increases because nontechnical personnel can report error conditions
without removing the top cover and exposing vital components to further risk. If the system error
LED on the front of the server is on, one or more LEDs inside the server or on the power supply
will be on. These LEDs can help identify and locate problems with some server components. By
following the path of lights, you can quickly identify the type of system error that occurred. The
Cisco MCS 7835-I2 is designed so that any LEDs that are illuminated remain illuminated when the
server shuts down as long as the AC power source is good and the power supply can provide +5
VDC to the server.
Light Path Diagnostics provide indication of failures for the following conditions:
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One or both power supplies consuming power higher than maximum rating
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Power supply 1 failure
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Power supply 2 failure
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Error on voltage regulator module (VRM)