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LaCie d2 Thunderbolt 3 10TB external drive Review

To test the drive we formatted it using the NTFS file system and tested it using the USB3.1 Type-C port.

Crystalmark is a useful benchmark to measure theoretical performance levels of hard drives and SSD’s. We are using V3.0.3.

The ATTO Disk Benchmark performance measurement tool is compatible with Microsoft Windows. Measure your storage systems performance with various transfer sizes and test lengths for reads and writes. Several options are available to customize your performance measurement including queue depth, overlapped I/O and even a comparison mode with the option to run continuously.

Use ATTO Disk Benchmark to test any manufacturers RAID controllers, storage controllers, host adapters, hard drives and SSD drives and notice that ATTO products will consistently provide the highest level of performance to your storage.

AS SSD is a great free tool designed just for benching Solid State Drives. It performs an array of sequential read and write tests, as well as random read and write tests with sequential access times over a portion of the drive. AS SSD includes a sub suite of benchmarks with various file pattern algorithms but this is difficult in trying to judge accurate performance figures.


LaCie quote a transfer rate of up to 240MB/s for the d2 Thunderbolt 3 which we were able to confirm with the ATTO benchmark. Under benchmarking the drive produced a read score of 241MB/s with writes coming in at 236MB/s. The drive’s write performance when dealing with 4K data is markedly better than the read.

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