Cisco CloudCenter: Get the Hybrid IT Advantage

Single Connector Attachment (SCA)

Definition - What does Single Connector Attachment (SCA) mean?

A Single Connector Attachment (SCA) is a small computer interface used for connecting peripheral devices such as disk drives or scanners to a personal computer (PC). It is a type of connection used for internal cabling of Small Computer System Interface (SCSI) schemes.

Techopedia explains Single Connector Attachment (SCA)

There are two different versions of the connector:
  • SCA-1: Outmoded; used a regular 68-pin data connector, 4-pin power connector and several configuration jumpers on a hard disk
  • SCA-2: Currently in use; has a single unified 80-pin connector with hot plugging
There are also two types of the SCA, which are single-ended (SE) and low voltage differential (LVD), that run at very high speeds over inexpensive twisted-pair copper cables.

The SCA uses the SCSI standards consisting of a standard port between peripheral devices and the computer. Although many SCSI connector types use separate cables, the SCA connects the drives directly into the system. Only one connector is used for power and data input/output (I/O) as well as signaling as opposed to using two cables for power and data with specific parameters to be set using jumpers on every drive. Likewise, the SCA allows the drives to configure parameters from the SCSI backplane.
Share this:

Connect with us

Email Newsletter

Join thousands of others with our weekly newsletter

The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.