topic Re: Question Performance EF280 in EF & E-Series, SANtricity, and Related Plug-ins

Question Performance EF280

ITSystemsQAM — Wed, 04 Jun 2025 12:35:20 GMT

Hello,

we have an EF-280 wit 48 SSD Disks.

We created 2 Volumes - Raid 6 - workload: other workload

"each" shelf one volume

directoly connected to DataCore Server (Windows) via 32 GB FC

These volumes are in an diskpool on Datacore served to ESXi Hosts

We got 150 MB/s and ~ 2000 IO/s

On other existing storages - like QNAP with SSD via ISCSI to Datacore -> ESXi - we got around 20.000 IO/s

So - what is wrong in our configuration ?

Thank you

Re: Question Performance EF280

kkemnitz — Tue, 30 Apr 2019 15:42:42 GMT

It's possible that you are experiencing performance degradation as a result of delayed ACK being enabled on the host-side. This is referenced in the KB available at https://kb.netapp.com/app/answers/answer_view/a_id/1074155/~/performance-degradation-with-data-assurance-enabled-volumes-and-iscsi-. Can you try following the steps to disable delayed ACK and verify if performance has improved?

Re: Question Performance EF280

ITSystemsQAM — Thu, 02 May 2019 07:26:54 GMT

Hello,

we are using the FC Adapter directly connected to the Datacore Server.

We do not use ISCSI

So - should we test this ?

Re: Question Performance EF280

kkemnitz — Thu, 02 May 2019 12:33:08 GMT

I apologize, as I overlooked that statement earlier in the initial post. Please disregard my post about iSCSI.

Re: Question Performance EF280

kkemnitz — Thu, 02 May 2019 18:31:25 GMT

Has a support case for this issue also been initiated with DataCore?

Re: Question Performance EF280

elementx — Wed, 15 May 2019 02:52:25 GMT

If you haven't contacted Support (best way forward), you could create a small disk and present it directly to a non-Datacore FC client, and perform IO from it.

Maybe also check clients and FC switches for errorrs or other problems with the ports/cables involved.