Does Intel DC P3600 supports SGL?

[srama16]

Hi ,

We are using Intel DC P3600 800G drive in our storage array, does this SSD drive supports SGL feature?.

we are using intel SPDK while debugging we found the NVMe controller doesn't support SGL

(gdb) p ns->ctrlr->flags & SPDK_NVME_CTRLR_SGL_SUPPORTED

$1 = 0

Is there any setup or settings which we are missing to set the device to support SGL?

Please find the drive information below and let me know if you need more information.

# isdct show -a -intelssd 0

- Intel SSD DC P3600 Series CVMD714000AX800VGN -

AggregationThreshold : 0

AggregationTime : 0

ArbitrationBurst : 0

Bootloader : 8B1B0133

CoalescingDisable : 1

DevicePath : /dev/nvme0n1

DeviceStatus : Healthy

DirectivesSupported : False

EndToEndDataProtCapabilities : 17

EnduranceAnalyzer : Media Workload Indicators have reset values. Run 60+ minute workload prior to running the endurance analyzer.

ErrorString :

Firmware : 8DV101H0

FirmwareUpdateAvailable : The selected Intel SSD contains current firmware as of this tool release.

Thanks,

Subbu

[srama16]

Hi Nestor C,

I have gone through some of the Intel NVMe SSD drive products, I can see DC D3600 specification mentioned that it supports SGL. Can you please confirm the same?. Please find the below link for the DC D3600 spec.

https://www.intel.in/content/www/in/en/solid-state-drives/ssd-dc-d3700-d3600-brief.html Intel® SSD DC D3700 and D3600 Series Product Brief

Thanks

Subbu

[idata]

Hello Subburajr,

Actually, that information you found is correct, you can verify it in these links:

- https://simplecore.intel.com/newsroom/wp-content/uploads/sites/11/2016/03/SSD-Fact-Sheet_URL-update-... Intel News Fact Sheet

- https://www.intel.com/content/dam/www/public/us/en/documents/product-briefs/ssd-dc-d3700-d3600-brief... Product Brief- For each drive's specs, please http://ark.intel.com/compare/88740,88724 check this link.

Please let us know if you require further assistance.

Regards,

Nestor C

[srama16]

Hi Nestor C,

I couldn't understand, the earlier reply you said none of the Intel NVMe* drives supports SGL even the latest one too.

Now the previous reply you agree with that DC D3600 supports SGL, can you confirm which are all the models that supports scatter/gather (SGL) IO ?

Thanks

Subbu

[idata]

Hi Subburajr,

Just to explain to you about the previous posts, we want to clarify that we were referring to the data center drives "P" series, none of those support SGL and that includes the latest versions (DC P4500 and DC P4600).On the other hand, the data center NVMe* drives D3600 & D3700 seem to be the only ones with this feature support.We apologize for the confusion and hopefully, this information is helpful for you.Regards,Nestor C