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From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
09-26-2014 07:15 AM
We are using NI 8266, 24TB RAID with PXIe 8384 in a PXIe 1075 chassis. The maximum data throughput which we are able to attain on this configuration is 832MB/s. We have an application requirement for increasing the data streaming throughput to 1.4 GB/s. We understand that 8266 supports this rate but due to usage in PXIe 1075 chassis, data throughput got restricted.
We would like to know if in place of using PXIe 8384, can we use a PCIe 8381 to work with this NI 8266 RAID on a Workstation PC with x8/x16 PCIe slot?
09-26-2014 10:18 AM
I don't think it's officially supported, but it has been tested and works. The PCIe-8381 and PXIe-8384 hardware architectures are basically identical, so the physical connection from host computer to RAID box is transparent to the host. The RAID behaves/communicates the same in both configurations.
robert
09-26-2014 11:05 AM
We happened to check the combination of PCIe 8381 with NI 8266, 24 TB RAID. It did work. But yet to verify for data throughput of 1.4 GB/s. Tomorrow, planned to benchmark it.
09-26-2014 11:11 AM - edited 09-26-2014 11:12 AM
Ah, yes...I neglected to answer the bandwidth part of your question. The PXIe-1075 is definitely the limiting factor in your current configuration. For maximum RAID bandwidth, the PXIe-1085 is required (4x more bandwidth per slot).
Switching to a PCIe-8381 directly in the host will bypass the PXIe-1075 and remove that bottleneck. You'll see a marked improvement.
robert
01-27-2015 08:41 AM
Hi Sundar,
I am very interested in the result of the benchmark, because I would like to try PCIe-8381 with 8266 as well, may I know the final result? thank you very much;