HP D5970A Server Controllers and Mass Storage Devices

HP D5970A - NetServer - LCII Manual

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  • HP D5970A | Server Controllers and Mass Storage Devices - Page 1
    (SCSI) and disk array controllers, tape backup solutions, and the range of supported RAID solutions. The paper also examines the newest offerings including I2O, Fibre Channel (FC), and Ultra2 SCSI where HP has provided industry-wide leadership in the development and acceptance of these standards. 1
  • HP D5970A | Server Controllers and Mass Storage Devices - Page 2
    you evaluate server system choices, will meet your needs now and in the future. If you have additional questions on related topics, there are many HP NetServer white papers and technology briefs that may be of interest to you as well. A detailed listing of these references and their URLs are
  • HP D5970A | Server Controllers and Mass Storage Devices - Page 3
    tape 80 drives, hard disk drives, scanners, 70 printers, disk array subsystems, and 60 CD-ROM drives. for cable length, transfer speed and maximum number of devices per bus. The continued evolution The server systems will be more scaleable. SCSI supports a maximum of 15 disks per channel while
  • HP D5970A | Server Controllers and Mass Storage Devices - Page 4
    adapts (or bridges) between PCI and SCSI and also provides RAID − HP FC HBA (Fibre Channel Host Bus Adapter) which adapts between PCI and FC − HP SCSI HBA which adapts between PCI and SCSI • Incorporated in an external storage unit − HP FC Array which adapts between FC and SCSI and also provides
  • HP D5970A | Server Controllers and Mass Storage Devices - Page 5
    a certain level of internal storage, usually selected as functions of user needs and costs. For example, a high-end server system might support a dozen internal hot-swap disk drives whereas an entry-level system might have only a couple of fixed internal drives. External storage can be rack-mounted
  • HP D5970A | Server Controllers and Mass Storage Devices - Page 6
    ZKLWHýSDSHU +3ý 1HW6HUYHUý $FFHVVRULHV 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. They complement other availability
  • HP D5970A | Server Controllers and Mass Storage Devices - Page 7
    do not protect from accidental or malicious destruction, theft, or site-wide problems like flood or fire. What kind of data protection is appropriate? Is revenue or profitability, or to the productivity of the employees? HP NetServer Solutions Hewlett-Packard has been supplying system solutions for
  • HP D5970A | Server Controllers and Mass Storage Devices - Page 8
    that the company will replace them for you if HP server management software indicates a problem-even if a failure has not yet occurred. typically performs better than the software RAID. The DAC can be programmed to support a hot spare drive configuration. With this X bad drive is replaced Hot
  • HP D5970A | Server Controllers and Mass Storage Devices - Page 9
    The necessity to create, test, and support unique drivers for every combination of I/O device and OS on the market HP was the founding company of the The split driver concept will reduce the number of drivers that must be written. OS vendors will write a single I2O-ready driver for each class
  • HP D5970A | Server Controllers and Mass Storage Devices - Page 10
    are used to build redundancy into configurations. Fibre Channel switches support a third topology, fabric, and are becoming widely available to treat storage as a utility that is shared between servers. Backup Solutions HP offers a full range of hardware and software products used to back up data
  • HP D5970A | Server Controllers and Mass Storage Devices - Page 11
    on local and remote servers. For example, if you have installed HP TopTools for Servers, then software agents automatically monitor the server system and failure analysis that warns of probable disk problem(s) HP SureStore tape backup devices support the "TapeAlert" feature that makes backups more
  • HP D5970A | Server Controllers and Mass Storage Devices - Page 12
    FFHVVRULHV For More Information For additional information about single server and multi-server high availability see several papers at: http://www.hp.com/netserver/products/cluster/more.htm For additional information about data protection schemes, see the RAID Levels Technology Brief at: http://www
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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. 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
O, Fibre Channel (FC), and Ultra2 SCSI where HP has
provided industry-wide leadership in the development and acceptance of
these standards.