Hard drive technologies

Hewlett-Packard HP understands the details of specific requirements for HP customers can refine their supply products to provide better facility and provides its customers. The major technologies are hard Small Computer System Interface (SCSI), Serial Attached SCSI (SAS) E also called Parallel ATA / IDE (ATA) and Serial ATA (SATA). The main factors that customers should consider the purpose of obtaining the best return on investment hard disk technology are reliability, robustness, price and performance.

These factors change very rapidly over time and to compete in the market, customers have to re-evaluate these factors on a regular basis. Workstation technologies used are parallel ATA hard drive (E / IDE) and SCSI. Initially it was called as SCSI SASI (Shugart Associates System Interface). Epilogue to promote wider adoption of the standard SASI, was standardized by American National Standards Institute ANSI.

Number of devices that can be supported by low-voltage differential SCSI LVD bus can reach up to sixteen. This means that a disk controller and fifteen units. HP SCSI hard drives are developed as fault-tolerant, reliable, robust and efficient. These HP hard drives are efficient and cost effective data storage media for business facilities or users who are focused on performance.

ATA was originally called IDE (Integrated Drive Electronics). ATA is the most widely used in business and personal computers at home. To make more generic ATA, which later revised as "Advanced Technology Attach." Each channel for 2 IDE hard drives. There was need for a new architecture for improve performance. The storage architecture that initially used the serial port was the success of Fibre Channel. The result has been in the markets for both SCSI and ATA evolved to follow suit. parallel evolution is the Serial ATA ATA. The objective of SATA technology is to overcome the limitations inherent to the IDE interface. Use high speed serial interface of 1.5 GB / s, offers great hot-plug capabilities and the topology of the tip point drop.

The SATA hard drives to remove the configuration of master and slave ATA devices and reduce wiring in relation to disk in the chassis. The main products the SATA drive provides more functionality compared to parallel ATA. SCSI parallel evolution is SAS (Serial Attach SCSI). Both SAS and SATA interfaces are compatible signal and protocol compatible. SAS users to deploy a data storage solution or the system can connect SATA devices on the same system. HP hard drives SCSI was developed as fault-tolerant, reliable, robust and efficient. These HP hard drives are efficient and cost effective data storage media for business facilities or users who are focused on performance.

There are many ways for the evaluation of hard drives for reliability. The best methods assessments are the AFR (annual failure rate) and MTBF (mean time between failures). The SCSI hard drives are designed and developed for running 24 / 7 service lifetimes of extended and more demanding working conditions. ATA hard drives are cost effective data storage medium for non-critical applications. ATA hard disk successor is the SATA drives that have the characteristics of business applications. And the successor to the SCSI hard drive is Serial Attached SCSI disks hard to have a system that is compatible with the Serial ATA hard drive.

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Shawn Paul (Marketing Manager)
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