File Copy Performance with Microsoft Robocopy
Microsoft's Robocopy, a CLI directory replication command, gradually replaced the older xcopy. It's multi-threaded, has a ton of options, and generally outperforms vanilla Windows copy operations. Best of all, it's built right in to Redmond's operating system. Especially useful for network copy operations and backups, Robocopy doesn't stop to ask you one hundred questions while it copies over your music collection, either.
The reality of benchmarking file copy performance is that you need something fast to move data from and fast hardware to move it to. This is most important with SSDs. It doesn't matter if your drive can write sequentially at 500 MB/s if the source files are hosted on a USB 2.0-attached external hard drive. We're copying our test files from an Intel SSD DC S3700 to the drives in the chart below, taking source speed out of the equation.
There are 9065 files comprising the 16.2 GB payload. Some of the files are huge (up to 2 GB), while others are best described as tiny. On average, that's around 1.8 MB per file. The files are a mix of music, program, pictures, and random file types.
It's fair to say that this chart would look much different if we were copying from a hard drive to a SSD. Even if the disk drive's sequential throughput wasn't a bottleneck, it'd still choke on the smaller files.
The A110 blows the competition's doors off. Taking just 44 seconds to copy the payload translates to a scorching 378 MB/s. Although that raw figure doesn't necessarily sound impressive in light of the synthetic results we've generated, the way we're running this test, in addition to its composition, make the benchmark a challenge.
- SanDisk A110 256 GB: Introducing The M.2 SSD Form Factor
- More On M.2 And SanDisk's Fancy PCIe Adapter Card
- Results: Sequential Performance
- Results: Random Performance
- Results: Tom's Hardware Storage Bench v1.0
- Results: Tom's Hardware Storage Bench v1.0, Continued
- Results: PCMark 7 And PCMark Vantage
- Results: File Copy Performance
- Results: Power Consumption
- PCI Express-Attached M.2: Ready For Prime Time