Toshiba PX04SMB160 SAS 1600GB Enterprise SSD Review – The SAS Awakens

SNIA IOPS Test

IOPS performance will typically vary greatly depending on
the nature of the IO traffic, including the mixture of Read and Write
operations, and the mixture of Block Sizes (the size of the IO operation’s data
packet, also referred to as IO Size). This test is designed to benchmark the
IOPS performance profile for random IO operations for 56 different combinations
of Read/Write mix % and Block Sizes when in a Steady State, which are of
interest to most users.

All of the SNIA’s test specifications define a ‘required’
set of parameters that must be run for the test and then allow the operator to
elect to run additional tests with different parameters of their choice. It is
the mandatory test with the required parameters that we run. Note that all of
the mandatory SNIA tests must be conducted with fully random data

As previously mentioned, a key principle of SNIA testing is
to provide a consistent basis for comparing different solutions from different
manufacturers.

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Here are the results –

SNIA IOPS Test – Power Efficiency Mode – Single Port

Toshiba PX04SMB160 SAS 1600GB Enterprise SSD Review - The SAS Awakens

Here you can see a visual confirmation that Steady State
Convergence was determined at the end of Round 5 (note that steady state
convergence is calculated from the 4K line).

 

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Toshiba PX04SMB160 SAS 1600GB Enterprise SSD Review - The SAS Awakens

Toshiba PX04SMB160 SAS 1600GB Enterprise SSD Review - The SAS Awakens

Here is a 3D and tabular presentation of the results. Users
can simply refer to the grid to obtain the R/W mix and Block Size value of
interest.  For example, Online Transaction Processing applications
typically run at a Block Size of 8K and a Read/Write Mix of 65/35, and users
can quickly understand how the device might perform under Steady State for
these access characteristics.

You can see that the 4K 100% Read IOPS result is 194,825 and
that the 4K 100% Write IOPS result is 95,017.  Even in ‘Power Efficiency and
Single Port’ mode, these are significantly better than for any SAS or SATA
drive we have previously tested – very impressive! 


SNIA IOPS Test – Maximum Performance Mode – Single Port

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Toshiba PX04SMB160 SAS 1600GB Enterprise SSD Review - The SAS Awakens

 

Toshiba PX04SMB160 SAS 1600GB Enterprise SSD Review - The SAS Awakens

Toshiba PX04SMB160 SAS 1600GB Enterprise SSD Review - The SAS Awakens

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In Maximum Performance mode we see significantly improved
write performance and a marginal increase in read performance.  For example 4K
100% writes has increased from 95,017 to a massive 124,319 IOPS.


SNIA IOPS Test – Product Comparison

For interest we present a comparison of the 4K 100% Writes
and Reads results with those of the other Enterprise SSDs we have tested –

Toshiba PX04SMB160 SAS 1600GB Enterprise SSD Review - The SAS Awakens

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An outstanding level of 4K random write performance, which
leaves other SAS and SATA drives well behind.

 

Toshiba PX04SMB160 SAS 1600GB Enterprise SSD Review - The SAS Awakens

..and an outstanding level of random read performance,
beaten only by Intel’s NVME PCIe drives.  Please see the Myce/OakGate Random Reads
test below as the PX04SMB reads more quickly in Dual Port operation.

 


Now let’s
head to the next page, where we look at the results of the SNIA Write
Saturation Test…..

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