Smart Response Technology
In computing, Smart Response Technology (SRT) (pre-launch name SSD Caching) is a proprietary caching mechanism introduced in 2011 by Intel for their Z68 chipset (for the Sandy Bridge–series processors), which allows a SATA solid-state drive (SSD) to function as cache for a (conventional, magnetic) hard disk drive.
SRT is managed by Intel Rapid Storage Technology software version 10.5 or later, and implemented in its device driver and the Z68 motherboard's firmware (option ROM). It is available only when the (integrated) disk controller is configured in RAID mode (but not AHCI or IDE modes) by implementing a style of RAID-0 striping. Write-back (Maximized mode) or write-through (Enhanced mode) caching strategy can be selected by the user. The maximum utilizable cache size on the SSD is 64 GB. Caching is done at the logical block addressing (LBA) level, not the file level.
Shortly before the announcement of the new chipset, Intel also introduced the Intel 311 (Larson Creek), a 20 GB single-level cell (SLC) solid-state drive, which it markets as suitable for caching. TRIM garbage collection is currently not supported for SRT caching devices, so the SSD's performance is solely maintained by its own firmware.
See also 
- Apple's Fusion Drive
- High-performance hybrid array
- Hybrid drive
- Intel Turbo Memory
- Microsoft ReadyDrive
- Microsoft ReadyBoost
- Intel Rapid Storage Technology
- Anand Lal Shimpi (May 11, 2011). "Intel Z68 Chipset & Smart Response Technology (SSD Caching) Review". AnandTech. Retrieved November 4, 2011.
- Intel® Smart Response Technology User Guide, Intel
- Allyn Malventano (May 11, 2011). "Intel Smart Response Technology: SSD Caching on Z68 Tested". PC Perspective. Retrieved November 5, 2011.
- Larsen Creek gets SLC NAND, 4 new Intel SSD series, Nordic Hardware
- Andrew Ku (May 11, 2011). "Intel SSD 311 (Larson Creek): Z68-Optimized". Tom's Hardware. Retrieved November 5, 2011.
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