MyDigitalSSD 128GB mSATA SuperCache 2 Caching SSD Review

Today’s review is of MyDigitalSSD’s SuperCache 2 mSATA 128GB SSD, and the FNet HybriDisk caching software.  A license key for the HybriDisk software is included with the purchase of the SuperCache 2.


How does a caching SSD work?  It works in conjunction with a hard drive disk (HDD) to create what the operating system sees as a single, combined storage partition.  A caching SSD utilizes specialized software to determine what programs, data, and/or files that the user accesses most frequently.  This “hot” data will be held in a dedicated “caching” partition on the SSD for much quicker access when called for.  Less frequently requested data will still reside on the HDD, until such time as it becomes frequently accessed enough to be moved to the SSD cache.  What is stored on the SSD cache is dynamic, and changes over time based on actual usage.

MyDigitalSSD caching SSD top view

Caching SSDs are even becoming much more prevalent in large data centers and enterprise storage systems, as much quicker access to frequently utilized data and routines is particularly beneficial for such usage scenarios.

Boot-up routines are the first and foremost example of what will be immediately moved to the cache and stay there.  Boot-up routines run each and every time you power on or reboot your computer.  Boot-up time is one area where we expect to see a significant improvement by utilizing a caching SSD and software.  We will utilize Greatis Software’s Bootracer to log boot times.  Our goal is to determine if the MyDigitalSSD SuperCache 2 and HybriDisk caching software can help a hard drive to attain SSD-like performance.


The MyDigitalSSD SuperCache 2 128GB mSATA SSD is a SATA III, 6 GB/s SSD in the standard 50mm mSATA form factor.  It features Toshiba MLC NAND, utilizing the Phison PS3109 controller.  The SuperCache 2 is rated for maximum read speeds of up to 550 MB/s, and maximum write speeds of up to 430 MB/s.

Power consumption is stated as less than 0.5w idle, and less than 0.9w active.  The SuperCache 2 supports RAID, TRIM and S.M.A.R.T.  It is reliability-rated for over 2,000,000 hours mean time between failures (MTBF), and features a three-year warranty.

The SuperCache 2 also features bit error monitoring and management, dynamic and static wear leveling, and dynamic bad block management.  The 128GB version of the SuperCache 2 is currently priced on MyDigitalSSD’s website at $99.99, including the FNet HybriDisk  caching software license key. The 128GB SuperCache 2 is currently available at Amazon for $99.99 (128GB) which is an excellent price. It is also available in capacities of 24GB, 32GB and 64GB.

Key features of FNet’s HybriDisk caching software include Smart-Swap Technology (SST), which customizes performance to align with the user’s usage patterns, and boot-up time reductions of up to 60%.  HybriDisk is easy to install, use and maintain.  The user can select the amount of SSD storage to be used manually, or go with the recommended default amount.  Full security of all data is maintained if the SSD fails or is removed; or in the event of a power interruption or outage.


MyDigitalSSD’s SuperCache 2 is in the standard 50mm mSATA form factor.  The SuperCache 2 arrives with a “SuperCache 2” label covering a large portion of the top side of the printed circuit board.  The label also states model number, “128GB mSATA 6G SSD” (6 GB/s), and a reminder that we are about to void the warranty when we remove the label for the next image.

MyDigitalSSD caching SSD top view sticker removed

Once we remove the label, we can see a pair of Toshiba 32GB MLC NAND modules, as well as the Phison PS3109 controller.

SuperCache 2 mSATA reverse seide2

In this image of the reverse side of the SuperCache 2 mSATA SSD, we can see the remaining two Toshiba 32GB MLC NAND modules.

In this next image, we have a close-up of one of the Toshiba 32GB MLC NAND flash memory modules.  Two on the top side of the PCB and the two on the reverse side give us a total of 4 X 32GB modules, for the total capacity of 128GB.  After formatting, we are left with 119GB of usable storage.

MyDigitalSSD caching SSD Toshiba NAND


Since our test system’s motherboard does not feature an mSATA slot onboard, it will be necessary for us to utilize a SATA III to mSATA adapter.  It simply occupies an unused PCI expansion bay cover slot, and allows us to insert our mSATA SSD into the circuit board’s mSATA slot and secure it to the board with the two screws provided.  After we attach our SATA power and data cables and secure the adapter into an unused expansion bay cover slot, we are ready for testing.

MyDigitalSSD caching SSD mSATA to SATA adapter

In the next images, we see the adapter with the mSATA SSD above it for size comparison, then the adapter with the mSATA SSD installed, and finally a close-up of the installed SuperCache 2 mSATA SSD.

mSATA adapter and mSATA SSD size comparisonmSATA adapter with mSATA SSD installed

mSATA adapter with mSATA SSD installed closeup


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    To see gains in write performance you must enable Maximized mode by un-checking the Enhanced Mode Button. We have told Fnet to please make it so there are options there instead of just un-checking enhanced mode. It will run at full SSD glory if you un-check that button. The reason there is no advantage in write performance while in enhanced mode is because it is actually writing to the HDD. You will see a huge difference in performance after un-checking that box.

    Hope you can update your review. Also SC2 drives can be used as boot drives for more experienced users.


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      The copy of the HybriDisk software supplied by MyDigitalSSD had the “enhanced mode” checked by default, and it could not be unchecked by the user. We re-downloaded it from the link on the product page and same result.
      MyDigitalSSD is more than welcome to supply an updated version of the software
      that allows the user to uncheck the “enhanced mode”
      and we will be more than happy to re-benchmark it.
      We also need to bear in mind that with caching solutions, the tradeoff of disabling enhanced mode can be a lower level of data protection in the event of a power interruption.

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    Also I don’t know what low density SSD you have available in your arsenal but I am pretty sure that the SC2 puts most low density SSD’s to shame both read and write in sustained and 4k. When you go down to the 64GB, 32GB, and 24GB most other SSD’s are in fact slower than an HDD. The Phison S9 controller is the only controller I know of that can deliver real SSD performance at low densities. The 128GB SC2 is the only example in the line slower than a 2.5″ counterpart while the other densities are in reality the only good option on the market for low density SSD..


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    And one more thing the whole point of this cache drive is to give people with mSATA ports the option of keeping their large spinner for storage while getting SSD speeds vs. their HDD. Both as a cache drive and boot drive. It is not meant to be the next fastest SSD in the world which for the average user doesn’t mean squat because they will definitely be able to tell the difference in speed vs an HDD but could not tell the difference in regular use between this SSD and the fastest SATA SSD around.


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    I am ordering today to try with my new Clevo W230st – will report once it gets here

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    Could you please post a link to Amazon for that “SATA III TO MSATA ADAPTER” ?

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