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Old January 8, 2018, 10:52 AM
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Default Intel® Rapid Storage Technology necessary for a single SSD?

I've just recently started seeing an error relating to iastor on my laptop that's preventing it from shutting down when I close the lid... so far the only thing that suggests I need it is a reference to Native Command Queuing.....

Has that functionality been replaced by stock W10 drivers?
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Old January 8, 2018, 11:00 AM
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I usually dabble with RST only when I use raid, otherwise I just keep the stock Intel drivers. But there is a setting in the power Management section when you configure the power plans to link/unlink sata power savings with the pcie link activity or something like that.
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Old January 8, 2018, 03:47 PM
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I thought RST was only for RAID?
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Old January 8, 2018, 04:46 PM
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According to the dell website it also adds NCQ to ahci...

Quote:
Features for AHCI-enables systems:
Advanced Host Controller Interface (AHCI) is an interface specification that automatically allows the storage driver to enable advanced SATA features, such as Native Command Queuing and Native Hot Plug on the SATA disks connected to your computer. The following features are supported on AHCI-enabled systems:
Native command queuing
Hot plug
Disk capacity greater than two terabytes (if that size is supported by the option ROM)
Password-protected disks
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Old January 8, 2018, 05:48 PM
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and what does NCQ add to an SSD's performance?
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Old January 8, 2018, 05:53 PM
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Quote:
Originally Posted by Mr. Friendly View Post
and what does NCQ add to an SSD's performance?
I honestly don't know, and I'm even wondering if that functionality isn't already covered by windows 10 on it's own... this is a 2cond gen i7/i5 chipset that was released well before W10.
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Old January 8, 2018, 06:02 PM
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In the case of SSD's, NCQ is used to try to keep the drive busy and not waiting on the CPU as much.

Edit: For anyone wondering, NCQ can save some needless head thrashing on spinning drives by allowing a read or write sequence that is more friendly to the mechanics.

Last edited by Valkyrie; January 13, 2018 at 10:49 AM.
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Old January 13, 2018, 01:53 PM
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sswilson, I'm interested to know if you found any advantage with RST in Win 10. I never tried it when I played around with 10, but did find some benefit in XP and 7..
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Old January 13, 2018, 01:55 PM
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I'm not even sure how I'd test for that....
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Old January 13, 2018, 02:00 PM
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Quote:
Originally Posted by Valkyrie View Post
sswilson, I'm interested to know if you found any advantage with RST in Win 10. I never tried it when I played around with 10, but did find some benefit in XP and 7..
For single disk systems the RST is an alternate SATA AHCI controller. Intel claims that it enhances performance and power management.

Intel states themselves: "Intel Rapid Storage Technology provides benefits to users of single drives as well. Through AHCI, storage performance is improved with Native Command Queuing (NCQ). AHCI also delivers longer battery life with Link Power Management (LPM), which can reduce the power consumption of the chipset and Serial ATA (SATA) hard drive."

The best person to answer this though with confidence would be AkG. Hopefully he stops by.
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