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Full Discussion: Determining Disk Speed
Top Forums UNIX for Dummies Questions & Answers Determining Disk Speed Post 302711137 by Corona688 on Friday 5th of October 2012 12:06:01 PM
Old 10-05-2012
The maximum transfer rate of SATA 2 is, ideally, around 300 megabytes per second. You're beating that by 30% in the real world so it really does look like you're getting SATA 3 speeds.

Just because a drive uses a SATA 3 port doesn't mean it's capable of its full 600 megabytes per second, of course. Whether you're reaching the true maximum speed of your drive, I can't say without knowing what it is and looking in its manual. The limits of your southbridge and memory are also important.

Last edited by Corona688; 10-05-2012 at 01:22 PM..
 

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ahci(7D)							      Devices								  ahci(7D)

NAME
ahci - Advanced Host Controller Interface SATA controller driver SYNOPSIS
sata@unit-address DESCRIPTION
The ahci driver is a SATA framework-compliant HBA driver that supports SATA HBA controllers that are compatible with the Advanced Host Con- troller Interface 1.0 specification. AHCI is an Intel-developed protocol that describes the register-level interface for host controllers for serial ATA 1.0a and Serial ATA II. The AHCI 1.0 specification describes the interface between the system software and the host con- troller hardware. The ahci driver currently supports the Intel ICH6/7/8/9, VIA vt8251 and JMicron AHCI controllers which are compliant with the Advanced Host Controller Interface 1.0 specification. Note that while the Intel ICH6/7/8/9, VIA vt8251 and JMicron AHCI controllers support standard SATA features, the ahci driver currently only supports hard disk, ATAPI SATA DVD, hotplug and NCQ (Native command queuing). Port multiplier and power management are not yet supported. CONFIGURATION
The ahci module contains no user configurable parameters. FILES
/kernel/drv/ahci 32-bit ELF kernel module (x86). /kernel/drv/amd64/ahci 64-bit ELF kernel module (x86). ATTRIBUTES
See attributes(5) for descriptions of the following attribute: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Architecture |x86 | +-----------------------------+-----------------------------+ |Availability |SUNWahci | +-----------------------------+-----------------------------+ SEE ALSO
cfgadm(1M), cfgadm_sata(1M), prtconf(1M), sata(7D) Advanced Host Controller Interface 1.0 Writing Device Drivers NOTES
To bind the ahci driver to your controller, choose the [AHCI] BIOS option. Note that booting is not supported if toggle exists between the [IDE] and [AHCI] BIOS options SunOS 5.11 22 Jan 2008 ahci(7D)
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