Can you run multiple drives off a SATA port?
By default, basic SATA supports a point-to-point connection, for example between a server and a disk drive. However, you can run multiple SATA disk drives off of a single SATA port if port multipliers are used.
Port multipliers enable a SATA controller port to fan-out to multiple SATA devices. When a port multiplier is used, for example, in a storage enclosure or disk shelves, a single SATA port and cable can access multiple SATA disk drives. With the emergence of SAS and co-existence of SAS and SATA, you will start to hear more about SAS and SATA port multiplexers, multipliers, expanders and switches to facilitate connectivity between servers and storage arrays. These components are also found inside of storage systems between server and the storage controller and between storage controllers and disk drives.
Vendors to watch or learn more about if you are interested in SAS and SATA components include Broadcom, Intel, LSI Logic, PMC-Sierra and SiliconStor.
Dig Deeper on Primary storage devices
Related Q&A from Greg Schulz
When cloud durability is added to the mix, cloud providers are able to tout a high number of nines of availability. Continue Reading
Cloud storage can be less expensive from a cost-per-gigabyte perspective, but it's important not to lose sight of other benefits as a value ... Continue Reading
Using solid-state in the cloud can boost performance, but first be sure you look past cost per gigabyte and are aware of any constraints from ... Continue Reading