Copy Performance on EVA4400 with FC disks

[JorisK]

Hi!

My setup:
One Blade c7000 rack with two Brocade 4/12 FC switches. Connected to the FC switch is one Proliant ML365 Windows 2003 server and one HP EVA 4400 Controller with FC disks.

I've set up a virtual disk on the EVA4400 and presented it to the Windows 2003 server.

How fast should i be able to copy from one LUN to another LUN? (in MB/s)

[Uwe Zessin]

There is no single 'correct' answer. It depends on the number of disk drives, the RAID level and the I/O pattern.

I've ran some similiar tests against an EVA4000 to show a sales colleague:
- pure sequential I/O with 16KB reads:
-- about 80 MB/sec if I recall correctly
- pure sequential I/O with 512 BYTE reads:
-- about 5 MB/sec

[JorisK]

Okay thanks,

But let's say it this way: I have a 10GB file on a Raid5 vdisk stored. When I copy that file to another raid5 vdisk, both vdisks in the same diskgroup that contains 25 FC disks, how fast should it transfer?

[IBaltay]

Hi,
maybe this numbers on slide 15 could help you:
http://www.scribd.com/doc/2233504/EVA-Overview,
as well as the spc-2 eva 8000 test at the storage performance council page:
http://www.storageperformance.org/results/b00004_HP_SPC2_executive-summary.pdf

[IBaltay]

and to be more eva 4400 specific here is the perf eva 4400 paper:
http://h71028.www7.hp.com/ERC/downloads/4AA1-8473ENW.pdf?jumpid=reg_R1002_USEN

[Uwe Zessin]

The numbers on slide 15 are as meaningful as the numbers I quoted: 0.

It depends on a number of different factors how many MB/S you get. What copy program, please? Does it do double-buffering? Is one large file being copied or many smaller ones? File fragmentation?

Again, there is no single number - try it out in _your_ environment.

[IBaltay]

one possibility is to measure the iopses/throughputs via the iozone or iometer benchmarks...

[Uwe Zessin]

No, Joris is looking after file copy speed.

So why not simply run a copy or two and measure with Windows perfmon?