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Your Complete Guide to SAS Drives

Storage drives are highly essential for servers. Whether you use SSD, hard drives, or other storage medium, your drive should interact with other parts of the system. There are different connection types for promoting communication. Depending on your purpose, you can choose between SATA and SAS connections. Let us now talk about SAS drives.

Learn more about SAS drives:

SAS or Serial-Attached SCSI is a type of solid-state drive providing you with a flash-based storage solution. It is a caching device intended to use the same slot as the HDD. The interface of SAS can be used for linking to the computer. You can choose between 3.5” and 2.5″ SAS drives. Common bandwidths available with SAS drives range from 3Gbps to 12Gbps.

If you have disk arrays or enterprise-grade servers with high workloads (that need high I/O and availability), you can use SAS SSDs. Other applications of SAS SSDs are high-end computing, data analytics, transaction processing, and server virtualization.

Drive makers offer SAS drives that have different options. High-quality SAS drives come with a high capacity, and you can use them for read-intensive application workloads. They can provide you with a single drive to write in a day. On the contrary, SAS drives with a comparatively low capacity can deal with write-intensive workloads.

The main purpose of SAS drives is to refine diversity in configurations and connectivity. It includes 4 wires to connect though they are separated into multiple cables. However, they do not have parallel designs, and every cable comes with outgoing and incoming wires. Due to the detachment, SAS drives can be connected in various ways. It leads to serial connections between multiple devices.

Are there any demerits of SAS drives?

Compared to SATA, the SAS drive will retain less data. So, you have to purchase more hardware parts to deal with the desired storage capacity. Besides, per unit of SAS costs much higher, especially if you need multiple SSDs. Still, advantages like improved connectivity and speed have made SAS drives more popular.

How do SAS SSDs differ from SATA?

The data transfer speed with SAS drives is comparatively faster. On the contrary, SATA or serial ATA helps with dual-port operation. It develops features for higher reliability like data integrity, higher signal quality, and error correction.

SAS SSDs need stronger signal voltage and transmit data efficiently with better data integrity. Unlike SATA, SAS works with more than one data path, high availability, and better data-path redundancy.

If your server has a SAS interface, you need both SATA and SAS drives. Moreover, servers that are integrated with ATA are compatible with SATA drives. SAS backplane modifies the signal while plugging in the SATA drive. So, the disk controller of the server will manage the drive and improve the reliability of SATA.

Most commonly, companies need high-quality, speedy SAS SSDs for higher data tiers. But, SATA SSDs have slower speeds though their cost is comparatively low. These differences between the drives will help you make the right choice.