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A Shopping Guide for Dell 2TB SAS Internal Hard Drives

SAS, which stands for Serial Attached SCSI, is a point-to-point serial interface that connects a hard drive to the motherboard of your computer. By purchasing a 2TB Dell SAS internal hard drive, you can expand the amount of storage space in your computer. Many affordable Dell 2TB SAS internal hard drives are available on eBay.

How do you choose the right hard drive?

The specs of the hard drive are determined by several factors, including:

  • Form factor: Hard drives come in two basic physical form factors. The 2.5-inch drive is primarily designed for smaller computers such as laptops, whereas the 3.5-inch drive is designed for larger computers such as desktops. Check the physical size of your system to determine the appropriate form factor.
  • Rotational speed: The rotational speed determines how quickly the disk can spin to reach its correct position. Higher rotational speeds reduce the amount of latency, meaning the slight delay between the time the hard drive receives commands and the time the information is actually accessed. The most common speeds are 7,200 RPM, 10,000 RPM, and 15,000 RPM.
  • Cache: The cache is a small amount of temporary memory that acts as a "buffer" between the hard drive and computer. Any data that's stored in the cache can be accessed much faster than the data on the hard drive. This can help to speed up operations.
What are some features of SAS hard drives?

Most new and preowned SAS hard drives feature something called tagged command queuing, which enables the computer to send multiple read and write requests at the same time. The drive will then decide which requests to fulfill first. SAS also supports multipath I/O, which allows for multiple physical paths between the CPU and hard drive. SAS has an error recovery and error reporting system as well. Check through the eBay selections to find a model that works for you.

What is an SAS hard drive?

SAS is a specialized interface, mostly used for enterprise-class computing in businesses or banks. Featuring a data transfer speed of up to 22.5 gigabits per second as of the release of SAS-4 in 2017, an SAS drive can operate quickly and reliably to fulfill the demands of a heavy workload at all times throughout the day. The typical SAS drive also has a very long life span of around 1.2 million hours, depending on the particular hard drive model, the environmental conditions, and temperature at which it's stored. The 1.2 million hours assumes a temperature of around 45 degrees Celsius or 113 degrees Fahrenheit. It has a maximum operating temperature of around 60 degrees Celsius or 140 degrees Fahrenheit.