topic Re: Hi I seen is how speed write data in eva and how speed re... in HPE EVA Storage

speed in eva

godfather-1 — Sun, 21 Oct 2012 09:57:38 GMT

plese say me what is speed read/Write in eva 8400?

tanks.

Johan Guldmyr — Sun, 21 Oct 2012 12:57:56 GMT

Host ports are all at 4Gb/s Fibre Channel.

Please define what you mean with read/write. There are a lot of "it depends".

godfather-1 — Mon, 22 Oct 2012 06:42:04 GMT

I seen is how speed write data in eva and how speed read data from eva.

please say me what speed copy od data on the eva.

tanks

Johan Guldmyr — Mon, 22 Oct 2012 06:58:57 GMT

Speed can be fast. Good enough?

Do you want to know how fast it is when it's maxed out?
Or when there's three disk shelfs.
SSD/SAS/FATA drives.
What kind of copy - windows file copy. dd. iozone. Ior or what kind of benchmark??
Which cache size?
Do you want iops, transfer rate, line rate
What is the size of a normal IO?
Speed from file server (with block storage from EVA) or from client behind a file server

So if you only look at fc connectivity then the max speed is 4Gb*$(amount of host/device ports) = 4*8=32Gbps = 3200MB/s.

Theoretical max.