The inner workings of this drive's SSD component shouldn't be too big of a surprise, given its RevoDrive name. We've already seen OCZ deliver impressive storage throughput with its RevoDrive 3 X2. However, the RevoDrive Hybrid is more akin to a RevoDrive 3 with a hard drive.
What's the difference? Through the use of a daughter-card, the X2 facilitates two times the capacity and higher performance via a quartet of second-gen SandForce SF-2200 controllers. The non-X2 version instead features two controllers. On the Hybrid, the daughter-card serves as a bypass for the 1 TB Toshiba MK1059GS.
Like the RevoDrive 3 and 3 X2, the Hybrid employs a PCIe-to-SAS SuperScale controller and OCZ's Virtual Controller Architecture (VCA) 2.0. You can read more about SuperScale and VCA 2.0 on page two of The OCZ RevoDrive 3 X2 Preview: Second-Gen SandForce Goes PCIe. However, due to the write-intensive nature of caching, OCZ uses a different firmware on its Hybrid and sets aside 28% of the on-board NAND for over-provisioning, whereas the RevoDrive 3 only has 7% of its memory set aside.
As a result, it's not advisable to use the SSD portion of the RevoDrive Hybrid like you would a 120 GB RevoDrive 3. When we open OCZ's Toolbox software, you can see the NAND flash array clearly labeled as a cache.
There are 16 memory packages on the drive itself, each of which contains two 8 GB dies. But, due to over-provisioning, only 93 GiB (100 GB) of space is available for caching.
That's the hardware story. It's the software level that defines the RevoDrive Hybrid's role as a caching device, though.
- Meet OCZ's RevoDrive Hybrid
- The Hardware: RevoDrive 3 And A 1 TB Hard Drive
- Software Side: Caching Powered By Nvelo's Dataplex
- Test Setup And Benchmarks
- SSD Caching: PCMark Vantage
- SSD Caching: Application Performance
- SSD Caching: Gaming Performance
- High Queue Depth Sequential Performance
- RevoDrive Hybrid: A Product Of Convenience?