Toshiba XG6 1024GB NVMe SSD Review

Posted 11 October 2018 17:11 CET by Jeremy Reynolds

OakGate Platform – ‘Fresh out of Box’ Tests

These tests provide a highly consistent basis for comparing solutions.  The sequence of tests begins with a purge of the drive to ensure that it starts in a FOB state.

The tests cover all of the essential IO performance characteristics.

Sequential Writes

This test performs 20 seconds of Sequential Write IOs for each combination of Queue Depths 1, 4, and 32, and IO Sizes of 4K, 128K, and 1024K.  IO traffic is limited to an IO Range of 1GB (which is equivalent to a test file size of 1GB).

Here are the results for the Toshiba XG6 –

 

 

Here is a comparison of the 128K, Queue Depth 32, Sequential Write performance with the other products I have tested to date –

A stunningly impressive result, and the fastest we have seen, which exceeds Toshiba’s specification of 3,000 MB/s.

Please note that NVMe drives are tested with an IO Size of 128K.

Let’s also have a look at how the Sequential Writes Power Consumption compares, but to do this fairly we must divide the average MB/s by the average Milliwatts to get a value for the effective work done.  Here is the result –

You can see that the Toshiba XG6 has an outstanding level of power efficiency.  Toshiba seems to have a magic wand when it comes to power efficiency as they are way ahead of the other manufacturers.

Sequential Reads

The test performs 20 seconds of Sequential Read IOs for each combination of Queue Depths 1, 4, and 32, and IO Sizes of 4K, 128K, and 1024K.  IO traffic is limited to an IO Range of 1GB.

Here are the results for the Toshiba XG6 –

Here is a comparison of the Sequential Read performance with the other products I have tested to date –

 

This is an excellent result, which exceeds Toshiba’s specification of 3,180 MB/s.

Random Writes

The test performs 20 seconds of Random Write IOs for each combination of Queue Depths 1, 4, 32 and 128 and IO Sizes of 4K, 16K, and 32K.  IO traffic is limited to an IO Range of 1GB.

Here are the results for the Toshiba XG6 –

 

Here is a comparison of the 4K, Queue Depth 1, Random Write performance with the other products I have tested to date –

This is an excellent result.

Let’s have a look at the Latency Distribution for the 4K, QD 1 performance –

 

This graph shows the Latency for every IO that was performed in the 20 seconds of traffic.  It shows the Number of IOs (IO Count) that fell within a particular period of Time (Microseconds).  The red line plots the Time against the Percentage of total IOs performed.

You can see that the Toshiba XG6 achieves an outstanding level of consistency and 99.9% of all IOs have a Latency of 20 Microseconds or less.

Random Reads

The test performs 20 seconds of Random Read IOs for each combination of Queue Depths 1, 4, and 32, and IO Sizes of 4K, 16K, and 32K.  IO traffic is limited to an IO Range of 1GB.

Here are the results for the Toshiba XG6 –

 

Here is a comparison of the 4K, Queue Depth 1, Random Read performance with the other products I have tested to date –

This is an outstanding result and second only to the remarkable result achieved by the Adata SX8200.

4K Random Mixed Reads/Writes

The test performs 20 seconds of 4K Random Mixed Reads/Writes for each combination of Queue Depths 1, 4, and 32, and Read/Write ratios of 0/100, 30/70, 50/50, 70/30, and 100/0.  IO traffic is limited to an IO Range of 1GB.

Here are the results for the Toshiba XG6 –

 

Here is a comparison of the 4K Mixed Random 50% Read/50% Write, Queue Depth 1 performance, with the other products I have tested to date –

An excellent result.


Now let’s head to the next page, to look at the results for the Oakgate Sustained Write and Recovery Tests…..