HP EVA 4100 again?

Question

Iron

Hello.
I'm still digging with HP EVA, the worst is behind me. But there are questions that I can't find an answer to. I ask those who can advise.
EVA connects directly to the server via Direct Connect over 4Gb Fiber Channel. But at the same time, the speed of downloading and writing to disk does not exceed ~ 350 MB / s. Moreover, if the file size is more than 100 MB, then the speed drops, and after 1 GB of file size (I measure it with the CrystalDiskMark tester, where you can change it), it is already at the level of 150 MB / s and less. This is not enough, a conventional hard drive has a little less. Perhaps the fact that the speed drops depending on the file size directly depends on the size of the array cache. When it fills up, the speed drops.
Question - is it possible to somehow affect the speed? Virtual machines are made on the Vraid0 array. If two FC cables are connected, only one is used.
How can the data transfer rate be increased? It can't be that this is EVE's limit.
And oh yeah, does anyone know where to find SSSU manuals? The links that were provided on the HP forum in the support section have been missing for a long time.
Thank you for your attention.

Answer 1

>But at the same time, the speed of downloading and writing to disk does not exceed ~ 350MB / s

Well, we already have 3 gigabits, which in general can be considered ok.
Well, most likely the cache has ended, as you expect. It is necessary to look at the characteristics of the piece of iron.
Then you have the same speed on the HDD is not constant, but falls over time.
multipatch you can see an example here for windows server
https
://www.westcomp.ru/articles/14894/admsoft.ru/kak-vklyuchit-multipath-mnogoputnost-v-...
By default, there will be a mode in a circle, it will be necessary change.
But I'm not very sure that this will help in speed. Storage is necessary not for speed, but for the number of IOPS that it can process and withstand. Therefore, here to think about planning the distribution of data + additional purchases of SSD if you still need speed.
Knock on HP support, they should all give or indicate where to download.

Answer 2

Optimal array for virtual machines - raid1