|the Fastest in-production
shipping SSDs - © |
||Earlier versions of this document
only listed the single fastest rackmount SSD in each u-size (1U, 2U etc) - but
there were some disadvantages in that method. So instead this now includes a
mini list of the most important companies and product lines in this
market space which covers a range of different interfaces and architectures.
You'll have to look at each vendor's own offerings to get the exact
specifications - but these are the vendors who are positioning themselves as the
companies to beat in terms of latency and throughput.
Speed has a different value in
rackmount SSDs - where the raw latency and IOPS may be outweighed by user
preferences about the exact design and consequences of the differing FT
RAM SSDs in this form
factor see the hybrid
SSDs and other nvm SSDs in this form factor see the
|PCIe SSD cards
||See also:- the
|Memory technology, generation level
(2, 3 or upcoming 4), the number of lanes and the API integration with critical
apps are some of the vital filters in assembling any list of really fast PCIe
SSDs. And that's before you get you controller architecture.|
RAM SSD category - the
fastest PCIe SSD is PMC's
. This RAM SSD in PCIe form factor has a x8 lane, PCIe
3.0 host interface - 16GB capacity - rated at over 10 million IOPS.
the flash based PCIe SSD category - the fastest flash based PCIe SSD (at the
time of writing - September 2015) is
is the fastest according to either IOPS or latency when compared to any of
the previous industry leaders in this category listed in these pages.
||Although the 3.5" form factor
was at the sharp end of SSD performance in earlier phases of
- it is no longer a launchpad for new high speed products. Although you will
find some older legacy 3.5" SSDs which were fast at the time they were
launched - they are mostly EOL - or simply available for old designs. Instead
you'll get better results by installing one or more smaller SSDs in a 3.5"
||fastest 2.5" flash
In the 2.5" form factor - the 2 interfaces with
claims for the "fastest 2.5 inch SSD" are
2.5" NVME PCIe
SSDs and 12Gbps SAS.
Here are examples of some of the faster products in these categories2.5" PCIe SSD
fastest contenders include :-
- is a
2TB eMLC NVMe Gen3 x4 PCIe SSD with 581K / 681K sequential R/W IOPS (Over
300K IOPS in 66% Read/33% Write mix)
2.5" SAS SSD fastest
contenders include several products with 12Gbps line rates:-
SN200 - offers upto 500K mixed R/W IOPS (PCIe 3.0 x4) or 240K mixed R/W
IOPS (2x2 NVMe 1.2).
many real life applications - particularly in arrays of such SSDs - the factors
which contribute to higher performance (higher power consumption and bigger RAM
cmake such SSDs bad citizens. Therefore some of these SSDs have pre-selectable
electrical power settings (in watts) which also impact the performance.
250K / 86K R/W IOPS, 1,000MB/s write speed.
|| The question arises - what kind of
interfaces are available for 1.8" SSDs? |
At the time of writing
this I'm unaware of any 1.8" PCIe SSDs.
That leaves the speed
race to SAS SSDs. .
||This form factor is becoming a
surprising hotbed of innovation and (surprisingly) even speed.|
Technologies - low capacity SSD implemented using MRAM instead of flash.
Kingston - enterprise M.2
flash SSD using SSD controller from by
|SSDs on a chip
||This section will be
updated soon with details of the fastest BGA PCIe SSDs.|