Re: FC Performance vs SAS

So yes this is a technically unsupported environment. However 4GB fiber cards ARE supported for direct attach as are 16GB Fiber cards. And 8G cards are supported for DS8xxx models direct attach. So it's probable that this works just fine but as IBM did not take the time to test it, that makes it unsupported.

So while this is NOT something we would implement for our customers or recommend let's don't throw the poor customer under the bus because someone else 'did a bad thing' here.

I would focus on the issues mentioned such as disk response time and such. Assure multiple paths are configured as well although from a pure performance standpoint we do NOT see fiber path utilization as an issue hardly ever. Mostly they never even touch 1G even when the system is doing significant I/O.

E1D was not a popular box for IBM i though I don't think that is an issue here.


- Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 12/6/2018 11:34 AM, Diego Kesselman wrote:

Direct connect->No SAN Switches?

If so it's unsupported

El jue., 6 de dic. de 2018 10:32, Holger Scherer <hs@xxxxxxx> escribió:

Direct, no VIOS.
dRAID5 over 24*300G 15k (it wasn't me :-)
V5000 is at level 7.8.1.5

As it was not me who setup the box i am checking for more details.
Server is a E1D and both FC Cards are mounted in Slots C3,C4
which are only 32Bit DMA capable...
-h

Am 06.12.2018 um 16:49 schrieb Joe Wood <wood3875@xxxxxxxxx>:

Is VIOS in play, what level?

Direct connect or Fibre San Switch?

What code level and raid config is on V5000?

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