Compaq 4200 Family manual Raid

Page 52

 

Glossary GL–3

pluggable

A method of element replacement whereby the complete system remains

 

on-line during element removal or insertion. There is no data transfers

 

over the enclosure buses during removal or insertion of an element (the

 

bus is “quiesced”). No booting or loading of code is permitted except on

 

the element being inserted. User applications that are not dependent upon

 

the elements on the affected SCSI bus are not noticeably impacted.

 

See also hot-pluggable.

power supply

The enclosure element that develops that DC voltages for operating the

 

enclosure elements from either an AC or DC source.

quiesce

To make a bus inactive or dormant. For example, you must quiesce SCSI

 

bus operations when replacing an element without removing power.

 

See also pluggable.

rack

A floor-standing structure primarily designed for, and capable of,

 

supporting equipment. All racks provide for the mounting of panels. (per

 

EIA Standard RS-310-C).

RAID

Redundant array of independent disks. A set of storage techniques

 

devised to increase the performance and availability of a storage

 

subsystem.

redundant power

A capability of StorageWorks cabinet and enclosures to ensure there is no

configuration

single point of power failure. (1) For a cabinet two AC power sources and

 

two power conditioning units distributed primary and redundant AC

 

power to enclosure power supplies. (2) For an enclosure, the primary and

 

redundant enclosure power supplies ensure the DC power is available

 

even when there is a failure of one supply, one AC source, or one power

 

conditioning unit. Implementing the redundant power configuration

 

provides protection against the loss or corruption of data.

RETMA mounting

The repeating mounting pattern in a vertical mounting rail established by

pattern

Radio, Electronics, and Television Manufacturers Association, the

 

predecessor of the Electronics Industry Association (EIA).This pattern

 

repeats every 1.75 in and is referred to as a unit. Therefore, a 3U pattern is

 

5.25 inches; a 4U pattern is 7.00 inches, and so forth.

SCSI

Small computer system interface (SCSI). An ANSI interface which

 

defines the physical and electrical parameters of a parallel I/O bus used to

 

connect computers and a maximum of 16 bus elements.

SCSI bus

An unbroken path consisting of conductors (in cables or on backplanes)

 

and connectors. Every bus must have two terminators, one at each end.

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Contents Enclosure 4200 Family LVD Disk Enclosures Page Contents Appendix a Glossary Index List of Figures List of Tables About This Guide Introducing the EnclosureStarting the Enclosure O ModuleEnclosure Power and Cooling Appendix B, SpecificationsDisk Drives Replacing CRUsDocumentation Conventions DescriptionSymbol Related Documents Related PublicationsChapter Introducing the EnclosureDisk Enclosure Features Disk Enclosure Rear ViewPower Supplies Scsi BusesHigh Availability Data IntegrityEnclosure Layout Status Monitoring and DisplayEMU Element Replacement CRU Replacement MethodsMajor Elements Element FunctionsPower Supply-Dual Power Supply-SingleFan ModuleConnecting the Scsi Bus Cables Starting the EnclosureScsi Bus Cables Description Part Number Meters FeetLength Description Meters Feet Installing Scsi Bus Cables Applying PowerVerifying Operation Rear Status LEDs Module Module Power Protection Single-Bus ModuleScsi Bus Termination Scsi Bus ConnectorsStatus Displays Replacing an I/O Module Scsi Address MapSingle-Bus Module LED Displays Disk Enclosure Bay AddressesDisk Drives Typical 1-Inch Disk DriveDisk Status Status ReportingDisk LED Status Displays Fault Status Drive Power Drive BlankReplacing a Disk Enclosure Power and Cooling Power Supply and Fan Assembly ComponentsEnclosure Power Power OptionsFans Temperature SensingFan Interface Power Supply and Fan Status Displays Replacing a Power Supply or FanNonoperational Status Replacing CRUs Ordering a Spare CRUBasic Replacement Procedures Common Replacement ProceduresBefore starting the replacement procedure ESD ProtectionReplacing CRUs Installing a Drive Blank Replacing a Drive with a Drive BlankInsert the drive blank part-way into the enclosure Regulatory Notices FCC Class B CertificationDenmark Safety Demco Country-Specific CertificationsSpecifications Appendix BFigure B-1. Dimensions-Vertical Orientation Table B-2 Element Physical Specifications Table B-1Environmental Specifications Table B-3 Operating SpecificationsTable B-4 Shipping or Short Term Storage Specifications Power Supply without fanTable B-5 AC and DC Power Specifications Power SpecificationsAC Power Specifications Ambient temperature GlossaryEMU RAID Scsi ID Index Enclosure 4200 Family LVD Disk Enclosures User Guide Index

4200 Family specifications

The Compaq 4200 Family represents a pivotal line of desktop computers designed by Compaq, aimed at fulfilling the increasing demand for reliable, efficient computing solutions in both business and home environments in the late 1990s. This series offered a diverse array of models, catering to varying levels of performance and user requirements, ultimately setting a standard for its time.

One of the standout features of the Compaq 4200 series was its robust performance, achieved through the integration of Intel Pentium processors, which delivered superior speed and multitasking capabilities. This made the 4200 family ideal for running productivity software, database applications, and everyday tasks efficiently. Depending on the model, users could choose configurations with varying clock speeds, allowing for tailored performance to meet specific user needs.

The Compaq 4200 Family also incorporated advanced technologies that enhanced user experience. Among these was the implementation of a high-capacity hard drive, which provided ample storage space for documents, applications, and multimedia files. This was complemented by increased RAM options, ensuring smooth performance and the ability to run multiple applications simultaneously without significant lag.

Graphics capabilities were another notable feature of the 4200 series. Many models offered integrated graphics options, allowing users to engage in light gaming and multimedia tasks without the need for additional hardware. Furthermore, the inclusion of PCI slots enabled users to upgrade their systems with dedicated graphics cards, enhancing visual performance for more demanding applications.

For connectivity, the Compaq 4200 Family included a variety of ports, such as USB, serial, and parallel connections, allowing users to easily connect peripherals like printers, scanners, and external storage devices. The inclusion of a built-in modem facilitated internet connectivity, making it convenient for users to access online resources.

Another characteristic of the Compaq 4200 series was its user-friendly design. The systems were constructed with accessibility in mind, featuring easy-to-open cases for upgrades and repairs. Additionally, Compaq provided comprehensive support resources, thereby ensuring that users could easily troubleshoot and maintain their systems.

In conclusion, the Compaq 4200 Family was emblematic of its era, showcasing a blend of impressive performance, flexibility, and user-centric design. It served a wide range of users, from professionals in corporate environments to families requiring dependable home computing solutions, making it a significant player in the landscape of late 1990s computing technology.
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