Browse Definitions :
Definition

SATA 2 (SATA II)

Definition - What is SATA 2.0?

SATA 2 (sometimes spelled SATA II or SATA 2.0) is a marketing term to describe products that use a revised version of the Serial Advanced Technology Attachment (SATA) standard. SATA defines the interface for the connection between the computer's motherboard and a hard drive, tape drive or other storage device. SATA 2 features include:

Hot plugging - the ability to remove and change a drive while the computer is running.

Staggered Spin Up - the ability to start disk drives in sequence, instead of all at once, to even out the power load when the system is first started. 

Native command queuing - improves the performance and efficiency of SATA drives. Normally commands will arrive at a disk to read or write from different locations on the disk. When commands are executed in the order they arrive, a great deal of mechanical overhead is created because the read/write head is constantly being repositioned. SATA II drives use an algorithm to determine the most efficient order to execute commands, reducing mechanical overhead and improving performance.

Port multipliers - allows up to 15 drives to be connected to a SATA controller with a port multiplier. Although this is far less than the number of drives that can be connected using Fibre Channel or Serial Attached SCSI (SAS), this improvement makes  it much easier to build disk enclosures using SATA drives.

Port selectors - allows two hosts to be connected to one drive. This is useful because it creates a redundant connection to the disk drive. This way, if one of the hosts has a failure, the second host can take over so access to storage is maintained. This type of redundancy is essential for enterprise environments.

 

Learn more:

What are the differences between SATA I and SATA II?

Learn more about SATA II features and how to leverage its capabilities.

To find out which hard drives use SATA 2.0, visit DesktopReview.com.

This was last updated in September 2011

Start the conversation

Send me notifications when other members comment.

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • California Consumer Privacy Act (CCPA)

    The California Consumer Privacy Act (CCPA) is legislation in the state of California that supports an individual's right to ...

  • compliance audit

    A compliance audit is a comprehensive review of an organization's adherence to regulatory guidelines.

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

SearchSecurity

  • spear phishing

    Spear phishing is an email spoofing attack that targets a specific organization or individual, seeking unauthorized access to ...

  • bridge

    A bridge is a class of network device that’s designed to connect networks at OSI Level 2, which is the data link layer of a ...

  • browser isolation

    Browser isolation is a cybersecurity model for web browsing that can be used to physically separate an internet user’s browsing ...

SearchHealthIT

SearchDisasterRecovery

  • disaster recovery team

    A disaster recovery team is a group of individuals focused on planning, implementing, maintaining, auditing and testing an ...

  • cloud insurance

    Cloud insurance is any type of financial or data protection obtained by a cloud service provider. 

  • business continuity software

    Business continuity software is an application or suite designed to make business continuity planning/business continuity ...

SearchStorage

  • business impact analysis (BIA)

    Business impact analysis (BIA) is a systematic process to determine and evaluate the potential effects of an interruption to ...

  • RAID (redundant array of independent disks)

    RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks to ...

  • dedicated cloud

    A dedicated cloud is a single-tenant cloud infrastructure, which essentially acts as an isolated, single-tenant public cloud.

Close