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Review: Samsung 845DC PRO 400GB SATA SSD

Review: Samsung 845DC PRO 400GB SATA SSD

Sam ChenFebruary 13, 2015

3D V-NAND for the Datacenter

samsung-845dc-pro-400gb-sata-ssd-custom-pc-review-6As the biggest producer of NAND flash in the world, Samsung has been in the enterprise SSD space for a very long time, but unless you’re one of Samsung’s big partners, you probably had no idea.

Even as a SSD reviewer, I was quite stunned when I recently attended the Samsung SSD Global Summit when they showed off a vast selection of enterprise SSDs, most of which I hadn’t even heard of, yet would probably do well in the retail market. Of course, I’m sure Samsung thought the same thing as earlier this year, Samsung took a big leap forward into the retail enterprise SSD space by introducing their first ever enterprise SSD designed for the channel, the Samsung 845DC EVO.

While the Samsung 845DC EVO was a fantastic enterprise SSD for read centric type of workloads, being that it’s based off Samsung’s 19nm 3-bit MLC NAND, it wasn’t ideal for those interested in using the SSD for write-intensive applications. 3-bit MLC is not only significantly slower, but also significantly lower endurance than MLC, which meant it wasn’t really competitive against most competitor’s MLC based offerings.

In order to fill the gap, Samsung recently introduced the Samsung 845DC PRO, which would rely on Samsung’s latest innovation, 3D V-NAND, to produce a drive that was both high performance in write intensive workloads and also high endurance as well.

Samsung 845DC PRO Specifications

Model845DC PRO845DC PRO
Form Factor2.5″ 7mm SATA2.5″ 7mm SATA
Capacity400 GB800 GB
ControllerSamsung MDXSamsung MDX
NANDSamsung 24-layer 40nm 3D V-NANDSamsung 24-layer 40nm 3D V-NAND
Sequential Reads530 MB/s530 MB/s
Sequential Writes460 MB/s460 MB/s
4K Random Read92,000 IOPS92,000 IOPS
4K Random Write50,000 IOPS51,000 IOPS
InterfaceSATA 6GB/sSATA 6GB/s
Warranty5 Years, 10 Drive Writes Per Day (DWPD)5 Years, 10 Drive Writes Per Day (DWPD)

The Samsung 845DC PRO will come in only two capacities – 400GB and 800GB, and both capacities will only be available in the 2.5″, 7mm form factor. Today we have the opportunity to review the Samsung 845DC PRO 400GB model. According to the specs the 800GB model should perform slightly better, although not by much.

Internal hardware for the Samsung 845DC PRO will include a combination of the tried and true Samsung MDX controller along with some of Samsung’s 1st generation 24-layer 3D V-NAND. Since the Samsung 845DC PRO is an enterprise part, we also get onboard tantalum capacitors for full path power loss protection. We’ll go more in detail on the internals when we take a closer look at the drive.

Warranty on the Samsung 845DC PRO is 5 years at 10DWPD (Drive Writes Per Day) across the board. This means the 400GB drive is rated at a whopping 7,300 TBW (Tera Bytes Written) while the 800GB drive is rated at 14,600 TBW. Compare that to the mere 600TBW on the 960GB Samsung 845DC EVO. This puts the Samsung 845DC PRO in a very premium category of enterprise SATA SSDs designed for write intensive workloads.

Let’s take a closer look at the Samsung 845DC PRO.

About The Author
Sam Chen
Hardware and Technology Enthusiast. SSD Evangelist. Editor-in-Chief. You can find Sam's full biography here