Buffer - Buffers are holding areas for data shared by devices that operate at different speeds or have different priorities. A buffer allows a device to operate without the delays that other devices might impose.
Form Factor/Type - The physical size of the hardware components in your system. For example, the form factor for an HDD might be 2.5 inches or 3.6 inches.
Interface - An interface is the means by which two independent systems communicate. For HDDs, the interface refers to a connector that plugs your HDD into your computer so it can receive power or data.
SATA - Serial Advanced Technology Attachment. It's a type of interface that connects a storage device to your computer's motherboard — think of it like an umbilical cord because it allows data to flow between the two. SATA is measured by how fast data transfers to/from the device. There are three SATA speeds, SATA I (1.5Gb/s), SATA II (3.0Gb/s or ATA-300) and SATA III (6.0Gb/s or ATA-600).
Spindle speed - The rotational frequency of the hard drive platter, measured in revolutions per minute (RPM). Spindle speed affects how fast the hard drive delivers data.
Ideal for enterprise servers and storage, video surveillance, and other write-intensive applications, WD RE 7200 RPM Enterprise SATA hard drives offer high capacity, 64 MB cache, 4th generation vibration tolerance.
Industry’s highest capacity nearline drive WD RE SATA hard drives has high capacity to suit even the most demanding storage needs.
Highest performance for business-critical applications WD RE delivers 6 Gb/s transfer rates, sustained sequential data rates of up to 171 MB/s and high random I/O rates.
Designed for quality and reliability With a field-tested 1.2 million hour MTBF, this high performance drive delivers the highest level of reliability for 24 x 7 operation in up to 100% duty cycle applications.
Dual processor Twice the processing power to maximize performance.
Vibration protection Enhanced RAFF technology includes sophisticated electronics to monitor the drive and correct both linear and rotational vibration in real time. The result is a significant performance improvement in high vibration environments over the previous generation of drives.
Dual actuator technology A head positioning system with two actuators that improves positional accuracy over the data track(s). The primary actuator provides coarse displacement using conventional electromagnetic actuator principles. The secondary actuator uses piezoelectric motion to fine tune the head positioning to a higher degree of accuracy.
StableTrac The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking during read and write operations.
Multi-axis shock sensor Automatically detects the subtlest shock events and compensates to protect the data.
RAID-specific, time-limited error recovery (TLER) Prevents drive fallout caused by the extended hard drive error-recovery processes common to desktop drives.
NoTouch ramp load technology The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.
Thermal extended burn-in test Each drive is put through extended burnin testing with thermal cycling to ensure reliable operation.
Dynamic fly height technology Each read-write head’s fly height is adjusted in real time for optimum reliability.