Performance and Summary
Though clearly not in the same capacity or pricing realm as most drives in this line-up, we can still evaluate the speed of the 2big Dock against other fast devices. It's important to have really solid throughput due to the size of the drive, of course.
Starting with a simple sequential read and write test, we can get a feel for the drive's performance in a best-case scenario. Raiding a couple of 10TB drives introduces really solid sequential reading and writing speeds, but do be aware of the risk to data should one of the drives go down - there's no redundancy in this mode. Reformatting the pair into Raid 1 reduces the read and write speeds to 247MB/s and 234MB/s, respectively.
Our second test involves two scenarios; copying across a folder containing large files such as ISOs; and copying across a program folder full of various small files. Again, the virtues of Raid are evident, and the Thunderbolt 3 conduit, offering up to 40Gb/s of bandwidth, has ample room with which to let the drives max out their performance.
We also copied over a 53GB folder full of large files, imitating the kinds of workloads professional users may indulge in, and the LaCie copied over from a Samsung 960 Pro 500GB drive in just a shade over two minutes. Writing back to the SSD in a non-cached state took a hair under two minutes, translating to around 400MB/s in both directions.
Ingesting content is also an important consideration for the 2big Dock. To that end, we connected a SanDisk Extreme 500 external SSD and recorded large-file read and write transfer speeds of 394MB/s and 381MB/s, respectively.