PXIe-8821 Disk write speed

[Bazz]

Hi,

Need to stream data continuously from scope card to disk, sampling at 100M samples/sec.  I think the PXIe-1071 chassis is capable, but what speed can the PXIe-8821 controller write data to disk?

Thanks

[Machop]

it seems that it is 1,6Ghz, therefore you can do it!

[James-G]

Are the samples 8 bits or higher?  If they are 8 bits, then 100 MS/s is 100MB/s.  Otherwise it is 200MB/s.

Are you acquiring multiple channels?  The numbers above need to be multiplied by the number of channels.

Are you using the disk in the PXIe-8821 controller?  Did you order it with a hard drive or solid state drive?

[Bazz]

16bit data, one channel at high speed, so greater than 200MB/s.

[James-G]

200MB/s likely cannot be done with the 2.5" SATA hard drive option.  NI doesn't spec performance of the SSD, but the 250GB SSD option might be able to keep up.

[Bazz]

That is my thinking too.   Thanks.