The enterprise market has seen a form factor transition of its own. While 2.5" SSDs are still immensely common, there's a lot of interest in PCIe solutions. |
The quick and easy way to get a PCIe SSD is to take a bunch of SSDs and RAID them together on a single PCIe card. You don't really get a performance benefit, but it does help you get a lot of performance without being drive-bay limited. This is what we typically see from companies like OCZ.
The other alternative is a native PCIe solution. In the aforementioned example, you typically have a couple of SATA SSD controllers paired with a SATA to PCIe RAID controller. With a native solution you'd skip the RAID controller entirely and just have a custom SSD controller that interfaces directly to PCIe. A native PCIe SSD is just an SSD that avoids SATA entirely, thus avoiding any potential bottlenecks. Today Micron is announcing its first native PCIe SSD: the P320h.
The P320h is Micron's first PCIe SSD as well as its first in-house controller design. You'll remember from our C300/C400/m4 reviews that Micron typically buys its controllers from Marvell and simply does firmware development in house. The P320h changes that. While it's too early to assume that we'll see Micron designed controllers for consumer drives as well, clearly that's a step the company is willing to take.
The P320h's controller is a beast. With 32 parallel channels and a PCIe gen 2 x8 interface, the P320h is built for bandwidth. Micron's peak performance specs speak for themselves: