striping with ZFS and SAN(AMS500 HDS)

There is a way to do striping with zfs?

I have Storage-SAN of HDS(AMS500), and I want to do striping on luns from the storage. I don't want any raid-5(because I have one on the disks in the HDS storage).

I only want to do strip on 2 luns(25GB each) that cames from different controllers.

Is striping on zfs those 2 luns is the best why to do it?

thanks.

[385 byte] By [shayberya] at [2007-11-27 1:55:32]
# 1
In general, zfs will stripe over all the storage in the storage pool.So just add the lun's.
robert.cohena at 2007-7-12 1:28:37 > top of Java-index,Solaris Operating System,Solaris 10 Features...
# 2

yes, but I test the preformance by writing 512MB in to the zfs, with 2 luns striped(each lun from diffrent controller and connected from diffrent port of the dual HBA).

also I test the by writing 512MB into zfs, with only one lun, BUT the preformance was the same.

that is why I am asking if there is a stripe in zfs?

I thougth the the preformace should be doubled!

shayberya at 2007-7-12 1:28:37 > top of Java-index,Solaris Operating System,Solaris 10 Features...
# 3

In theory yes. So I would have expected that to work.

Of course, zfs is supposed to be a "smart" volume manager.

Your not supposed to have to control factors like striping and concatenation.

You just tell it what storage is available and it works out the best way to lay it out.

So theres always a chance its trying to do something "smart" which doesnt turn out to be what you want.

You might have to take this up on the opensolaris zfs forums.

robert.cohena at 2007-7-12 1:28:37 > top of Java-index,Solaris Operating System,Solaris 10 Features...
# 4
there any chance to control it?there can I do concatination in zfs?
shayberya at 2007-7-12 1:28:37 > top of Java-index,Solaris Operating System,Solaris 10 Features...
# 5
Nope you can't control the layout. Its supposed to "just work".First thing I'd do is make sure the hardware really can do what you want.Make each lun a separate UFS filesystem.Then write to them simultaneously and see what aggregate throughput you get.
robert.cohena at 2007-7-12 1:28:37 > top of Java-index,Solaris Operating System,Solaris 10 Features...