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HP D7171A - NetServer - LPr Manual

Server controllers and mass storage devices.
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Description
The proper selection of controller and storage devices, as part of either a
single server or clustered system, enhances the system's performance and
availability. Storage capacity, data transfer rates and response times to user
requests depend upon the types of controller and storage devices. These
devices significantly impact traditional measurements of system performance.
Availability depends upon the architecture of storage within a server system
so that the data and applications can be both protected and available at a
level consistent with the criticality of the server environment.
Storage management concerns the tools used to monitor and predict the
storage environment. The proper tools can make storage management
intuitive and informative, ultimately reducing total cost of ownership. These
management tools, combined with the correct controllers and disks, can
accommodate eventual system growth in both user base and application
complexity.
Topics Covered
You should read this white paper to become better acquainted with the
important issues related to selecting controller and mass storage devices
including
Choices between various devices, such as controllers, tape backup
drives, and disk drives
Physical means of storage organization, i.e. internal, external,
rack-mountable
Storage topology to improve system availability and performance
Storage management
This paper reviews many of the storage solutions that are available for
HP NetServers including hard disk drive products, Small Computer System
Interface (SCSI) and disk array controllers, tape backup solutions, and the
range of supported RAID solutions. The paper also examines the newest
offerings including I
2
provided industry-wide leadership in the development and acceptance of
these standards.
O, Fibre Channel (FC), and Ultra2 SCSI where HP has
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   Summary of Contents for HP D7171A - NetServer - LPr

  • Page 1: Executive Summary

    ý 1 H W 6 H U Y H U ý $ F F H V V R U L H V 6HUYHUý&RQWUROOHUVýDQGý0DVVý6WRUDJHý'HYLFHV Executive Summary Description The proper selection of controller and storage devices, as part of either a single server or clustered system, enhances the system’s performance and availability.

  • Page 2

    ZKLWHýSDSHU ý 1 H W 6 H U Y H U ý $ F F H V V R U L H V By the time you’ve read this white paper, many of your questions about storage and controllers will have been addressed. Then the decisions that you make and the configurations that you select, as you evaluate server system choices, will meet your needs now and in the future.

  • Page 3

    ZKLWHýSDSHU ý 1 H W 6 H U Y H U ý $ F F H V V R U L H V Connectivity A SCSI interface is an independent and intelligent local I/O bus. Through this bus a variety of different devices and one or more controllers can communicate and exchange information.

  • Page 4

    ZKLWHýSDSHU ý 1 H W 6 H U Y H U ý $ F F H V V R U L H V Controllers Controllers (or adapters) are devices that manage the communication interface by adapting or bridging the data from one I/O bus to another. As an added benefit, controllers can also organize and protect the data stored on the disks through mirroring, duplexing and/or RAID techniques.

  • Page 5

    ZKLWHýSDSHU ý 1 H W 6 H U Y H U ý $ F F H V V R U L H V Internal versus External Storage Internal storage means that the drives are located within the server’s chassis. External storage allows the storage to be located in a “storage box”...

  • Page 6

    ZKLWHýSDSHU ý 1 H W 6 H U Y H U ý $ F F H V V R U L H V Backup System backup is an essential component of any mass storage strategy. Backup strategies provide for the reconstruction and recovery of lost operating environments and application data if the system should fail.

  • Page 7

    HP NetServer Solutions Hewlett-Packard has been supplying system solutions for demanding enterprise environments for over 20 years. This experience gives HP unmatched expertise in understanding and solving the needs you have for mass storage.

  • Page 8

    1988 by three academics from the University of California at Berkeley as a way to organize and protect stored data. Additional levels have since been developed to enhance performance and data redundancy. Hewlett-Packard NetRAID family controllers offer a choice of seven...

  • Page 9

    Operating system vendors began releasing the systems that provide support for I O in early 1998. Hewlett-Packard has launched the HP NetRAID-3Si disk array controller, the first in a line of HP NetServer products that will support the I O standard.

  • Page 10

    ZKLWHýSDSHU ý 1 H W 6 H U Y H U ý $ F F H V V R U L H V adapter (HBA) facilitates point-to-point connections. The addition of a hub changes the Fibre Channel topology from point-to-point to arbitrated loop (FC-AL) and increases configuration flexibility.

  • Page 11

    $ F F H V V R U L H V Integrated Management HP NetServer disk subsystems are completely integrated with Hewlett-Packard server management software, allowing you to monitor and manage disks on local and remote servers. For example, if you have installed HP TopTools for Servers, then software agents...

  • Page 12: For More Information

    Microsoft Cluster Server is a registered trademark of Microsoft Corporation. Microsoft Windows NT is a registered trademark of Microsoft Corporation. All other brand names are trademarks of their respective owners. Information in this document is subject to change without notice. ©Copyright Hewlett-Packard Company 1999. All Rights Reserved. Technical information in this document is subject to change without notice.

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