400-AHLU Dell 2TB 7.2K RPM SAS-12GBPS 512E SFF 128MB Hard Disk Drive | Refurbished

The Dell 400-AHLU is a hard disk drive designed for enterprise-level storage systems. It offers a large storage capacity of 2 terabytes (TB) and has a spinning speed of 7,200 revolutions per minute (RPM). This hard disk drive is equipped with a Serial Attached SCSI (SAS) interface that supports a data transfer rate of up to 12 gigabytes per second (GB/s). Additionally, it utilizes 512-byte emulation (512e) technology, which allows the drive to emulate the older 512-byte sector size while still using a larger, more efficient 4K sector size. In this article, we will discuss the various features and specifications of the Dell 400-AHLU hard disk drive.

Capacity and Form Factor

The Dell 400-AHLU offers a storage capacity of 2TB, which is equivalent to 2000 gigabytes (GB). This large capacity makes it an ideal choice for data-intensive applications such as video editing, data analytics, and cloud computing. The drive has a Small Form Factor (SFF) design, which means it has a smaller physical size compared to standard 3.5-inch hard drives. This makes it suitable for use in compact servers and storage systems where space is limited.

Spinning Speed and Latency

The 7,200 RPM spinning speed of the Dell 400-AHLU is considered to be the standard speed for enterprise-level hard disk drives. This high spinning speed allows the drive to read and write data at a faster rate, which results in improved overall system performance. Additionally, the drive has a low latency rate of 4.16 milliseconds (ms), which means it can access data quickly.

SAS Interface and Data Transfer Rate

The Dell 400-AHLU hard disk drive is equipped with a Serial Attached SCSI (SAS) interface. SAS is a high-speed data transfer protocol that is commonly used in enterprise-level storage systems. The SAS interface supports a data transfer rate of up to 12 gigabytes per second (GB/s), which is significantly faster than the previous generation SAS interface. This high data transfer rate allows for fast and efficient data transfer between the hard disk drive and the host system.

512e Technology

The Dell 400-AHLU hard disk drive utilizes 512-byte emulation (512e) technology. This technology allows the drive to emulate the older 512-byte sector size while still using a larger, more efficient 4K sector size. This means that the drive can maintain compatibility with older systems that were designed to work with the smaller sector size. At the same time, it can take advantage of the larger sector size, which offers improved performance and data reliability.

Buffer Size and Cache

The Dell 400-AHLU hard disk drive has a buffer size of 128 megabytes (MB). The buffer, also known as the cache, is used to temporarily store data that is frequently accessed by the system. This allows the drive to access frequently used data quickly, which results in improved system performance. The cache size is also important for applications that require large amounts of sequential read and write operations.

Reliability and Durability

The Dell 400-AHLU hard disk drive is designed to be reliable and durable. It has a Mean Time Between Failures (MTBF) rate of 1.4 million hours, which means that the drive is expected to operate reliably for a long time. Additionally, the drive is equipped with various features that improve its durability, such as shock resistance and thermal monitoring. These features help to ensure that the drive can withstand the rigors of enterprise-level use.