Seagate 6450, 6451 manual Physical dimensions, Seek time, Multisegmented cache buffer

Page 15

Medalist Pro 6450/6451 Product Manual, Rev. B

7

 

 

 

1.4 Physical dimensions

The mounting dimensions are shown in Figure 6 on page 23.

Height, max

1.027 inch (26.09 mm)

Width, max

4.025 inches (102.2 mm)

Depth, max

5.787 inches (146.99 mm)

Weight

1.5 lb (0.68 Kg)

1.5 Seek time

Seek value is the interval between the time the actuator begins to move and the time the head has settled over the target track. Seek time is a true statistical average of at least 10,000 measurements of seek time. All measurements are taken under nominal conditions of temperature and voltage with the drive mounted horizontally. The specifications in the table below are defined as follows:

∙Track-to-track seek time is the average of all possible single-track seeks in both directions.

∙Average seek time is measured by executing seeks in both directions between random cylinders.

∙Full-stroke seek time is half the time needed to seek from track 0 to the maximum track and back to track 0.

Track-to-track

Average/typical

Full-stroke

Average

seek time (typ)

seek time

seek time (typ)

latency

2.0 msec seek

9.5 msec read

20.0 msec seek

5.58 msec

2.5 msec read

10.0 msec write

22.0 msec read

 

3.5 msec write

 

23.5 msec write

 

Note. Host overhead varies between systems and cannot be specified. Drive internal overhead is measured by issuing a no-motion seek. Overhead is typically less than 0.5 msec.

1.6 Multisegmented cache buffer

The Medalist Pro ST36450A and ST36451A drives are available with a 512-Kbyte, multisegmented cache buffer that improves performance by reducing access times.

Read look-ahead.The drive uses the read segments to store additional logical sectors, after the last requested sector, into a buffer before the computer requests the additional sectors. The cache buffer stores data

Page 14 Page 16
Image 15
Page 14 Page 16
Contents Product Manual Page Product Manual Page Contents Configuring and mounting the drive Appendix. Timing diagramsATA interface Figures Medalist Pro 6450/6451 Product Manual, Rev. B Introduction Capacity PerformanceEnergy-efficiency Drive specification ST36450A ST36451A Quick specification chartVoltage tolerance including noise +12V Specifications Standard configurationFormatted capacity Functional specifications Physical organizationST36450A ST36451A Physical dimensions Seek timeMultisegmented cache buffer Start and stop times Typical power-up and power-down sequenceAuto-park Power-up sequencePower-down sequence Power specifications Power managementSleep mode Active modeIdle mode Standby modePower consumption Environmental specifications 1.13.1 Ambient temperatureInput noise Shock and vibration Temperature gradientAltitude Relative humidityAgency listings Overall A-weighted Value IdleAcoustics ReliabilityFCC verification Electromagnetic Compliance for the European UnionPage Sicherheitsanleitung Handling and static-discharge precautions Configuring and mounting the drivePart Description Part number I/O cable and connectorPower connector Part DescriptionOptions jumper block ConnectorsConfiguration Settings Master/slave configurationAlternate capacity jumper Cable-select optionRemote LED connection Mounting the drive Connecting cable-selected drivesMounting dimensions Medalist Pro 6450/6451 Product Manual, Rev. B ATA Interface ATA Interface connector pin assignmentsATA interface connector pin assignments Command name Parameters used Command setCA, CB Word Description Value Identify drive command ECHWord Description Value Word Description Value Feature Value Set Features command EFHUpper 5 bits PIO and DMA Data-Transfer ModesAutomatic Reallocation Standby timer timeout periodSleep command 99H, E6H Sector Count Register contents Corresponding timeout periodSynchronous DMA Transfer Signal Line Definitions Signal Line Definitions New Definitions Old DefinitionsProtocol Rules Field/Bit Description Error RegisterTime Description Min Max Appendix. Timing diagramsProgrammed I/O timing with Iordy TKR Sustained Synchronous DMA burst Time Description ModePage Page

6451, 6450 specifications

The Seagate 6450 and 6451 series represent a significant advancement in storage technology, designed specifically for high-performance computing demands. With an emphasis on reliability and speed, these models cater to enterprise-level applications, making them an ideal choice for data centers and organizations that require robust storage solutions.

One of the standout features of the Seagate 6450 and 6451 is their capacity. Both models provide extensive storage options, ranging from several terabytes to accommodate large data sets. This capability ensures that organizations can store vast amounts of information without the need for frequent upgrades, a crucial aspect for businesses that experience exponential data growth.

In terms of performance, the Seagate 6450 and 6451 series are built on cutting-edge SATA and SAS interfaces, providing exceptional data transfer speeds. This rapid throughput is essential for applications that require quick access to stored data, such as databases, virtualized environments, and enterprise applications. The drives offer improved IOPS (input/output operations per second), which enhances overall system responsiveness.

Reliability is another hallmark of the Seagate 6450 and 6451 series. With advanced error detection and correction technologies, these drives ensure data integrity, minimizing the risk of data loss. The series is also designed to operate continuously in high-demand environments, featuring robust construction and durability that meet the rigorous standards expected in enterprise settings.

Moreover, the energy efficiency of the Seagate 6450 and 6451 drives is noteworthy. They incorporate technologies that help reduce power consumption while maintaining performance. This is particularly important for organizations looking to reduce their carbon footprint and operational costs.

Additional features include comprehensive data security measures, such as built-in encryption support, which protects sensitive information from unauthorized access. These drives also come equipped with various management tools that facilitate monitoring and optimization of performance, making it easier for IT administrators to maintain their storage systems.

In summary, the Seagate 6450 and 6451 series are engineered to meet the evolving needs of the data-driven world. With impressive storage capacities, high-speed performance, steadfast reliability, and energy efficiency, they are invaluable assets for any enterprise aiming to maximize their data management capabilities.
Top Page Image Contents