HP DL360 Drive technology overview
HP DL360 - ProLiant - G3 Manual
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UPC - 613326948835
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HP DL360 manual content summary:
- HP DL360 | Drive technology overview - Page 1
8 Improved performance and reliability with RAID 9 Advanced controllers ...9 Solid state drives for servers...9 HP solid state drive reliability requirements 10 NAND over provisioning and wear-levelling 10 Power loss protection ...10 Value, mainstream and performance SSDs 11 SSD performance - HP DL360 | Drive technology overview - Page 2
for entry-level servers. HP Midline drives provide larger capacity and greater reliability than Entry drives. HP Midline drives have improved resistance to rotational and operational vibration, so they are better suited than Entry drives for use in multi-drive configurations. For maximum flexibility - HP DL360 | Drive technology overview - Page 3
and electrically with HP ProLiant servers or storage products. This mechanical commonality extends to most SAS-based StorageWorks and HP Integrity server products as well. Thus, mixed HP Enterprise solutions can be supported by a common family of hard drives. Technological advances continue - HP DL360 | Drive technology overview - Page 4
their lower power and smaller size, have hastened this transition. By the end of 2010, all new enterprise class drives and all new 10k and 15k RPM drives will be SFF. HP expects to continue to develop 3.5-inch midline and entry class drives. Disk drive capacity The capacity of a drive, measured in - HP DL360 | Drive technology overview - Page 5
platters multiple platters per drive increased speed of platter rotation increased embedded processing power and memory incorporated into the drive increases. There drive failures occurring in a large population of drives in operation for one year. For example, a population of 100,000 drives - HP DL360 | Drive technology overview - Page 6
it ships remain reliable, meet customer requirements, and integrate seamlessly into HP server and storage systems. The HP processes also ensure continuous improvement in both current and future products and processes. The qualification process consists of four specific steps: 1. Selection evaluation - HP DL360 | Drive technology overview - Page 7
HP option kitting configuration sites. Product quality data is reviewed on a daily, weekly, and monthly basis. Interconnect technology Various interconnect technologies are used to connect one or more disk drives to a computer system interfaces for industry-standard servers 2nd Gen. SATA SAS SAS - HP DL360 | Drive technology overview - Page 8
.www2.hp.com/bc/docs/support/SupportManual/c01613420/c01613420.pdf. SAS-2 The SAS-2 interface supports a link speed of 6 Gb/s, or 600 MB/s, in each direction. SAS-2 controllers were first introduced with HP ProLiant G6 servers in 2009. The SAS-2 interface will support SAS and SATA drives; however - HP DL360 | Drive technology overview - Page 9
SCSI interfaces. For further details, see the technology brief entitled "HP Smart Array Controller Technology," at http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00687518/c00687518.pdf. Solid state drives for servers Solid state drives represent a new type of storage technology that is now - HP DL360 | Drive technology overview - Page 10
performance, this data is kept in high speed DRAM on the controller and periodically written to metadata regions in the NAND flash array itself. All HP ProLiant SSDs feature power loss protection, which ensures that in the case of power loss to the drive (including hot plug removal) all of this - HP DL360 | Drive technology overview - Page 11
is as good as or better than Enterprise class disk drives. SSDs are differentiated primarily by the read/write workload levels that they are able to support and their endurance, or expected service life. The current 2nd generation HP SSDs introduced in late 2009 are considered Enterprise mainstream - HP DL360 | Drive technology overview - Page 12
to higher shock and vibration (up to 1000G) Environments requiring drives with lower power consumption (2 watts) HP SSDs are designed for an operational life of over three years, the typical service life for a new server. The NAND memory used in SSDs has a relatively well understood lifespan that - HP DL360 | Drive technology overview - Page 13
Manual/c01613420/c01613420.pdf Technology brief Solid state drive technology for ProLiant servers http://h20000.www2.hp.com/bc/docs/support/SupportManu al/c01580706/c01580706.pdf HP Serial ATA Drives overview http://h18004.www1.hp.com/products/servers/proliants torage/serial/sata/index.html HP
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1
Abstract
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Introduction
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Categories of server disk drives
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Characteristics of disk drives
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Small form factor and large form factor disk drives
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Disk drive capacity
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Disk drive performance
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Reliability
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Drive qualification process
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Interconnect technology
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Serial Attached SCSI (SAS)
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SAS-2
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Second generation Serial ATA (SATA)
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Interconnect bandwidths and drive throughput
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Improved performance and reliability with RAID
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Advanced controllers
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Solid state drives for servers
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9
HP solid state drive reliability requirements
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NAND over provisioning and wear-levelling
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Power loss protection
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Value, mainstream and performance SSDs
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SSD performance
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Conclusion
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For more information
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Call to action
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Drive technology overview
technology brief, 3
nd
edition