moving disk(s) between controllers

[dannyb78]

Hi all,
I have a 8.1SVN installation on dedicated hardware, with E3300 CPU, 2GB of RAM, 4 2TB sata disks in RAIDZ full ZFS.
all 4 disks are connected to ICH7 integrated controller.
to increase the performance i'll move two disks to a new more performant controller.

What should I do to preserve my data?

 

[William Grzybowski]

What you mean?

Shutdown, move the disks, turn it back on...

 

[William Grzybowski]

Also, no that you probably are not getting any better performance until you upgrade your RAM, the ICH7 is unlikely to be the bottleneck...

 

[dannyb78]

RAIDZ will not go offline if I move 2 of 4 disks in the same pool? Or should I move one disk once, replacing it in GUI and resilvering the pool?

About my RAM system actually dont use swap so I suppose that this can be sufficient for my config. Anyway I'll be upgrading my RAM in near future.



thanks for helping me.

 

[dannyb78]

Wow

great job guys!!!

as you told I just swith off my nas, moved both disks and at poweron all was right working, with all volumes online and healty!

I'll let you know If this increased NSA perfomances. I needed one extra sata port for a service disk, in my mind using 2 ports instead of 4 may give me more free bandwidth.

If anyone is interested Asrock SATA3 pci ex card
http://www.asrock.com/mb/spec/card.asp?Model=SATA3 Card

is fully compatible with freebsd 8.2 ;)
Dont expect sata3 performance from this cheap controller, it's worst than a ICH10 integrated controller, but if you need two extra sata ports at low price you can look at this.

sorry for bad english :(

EDIT: transferring files from/to my desktop increased from 50MBs to 60MBs. same hardware but with G45/ICH10R (instead of G31/ICH7) perform more than 80MB/s, but my old P45 card has left us... RIP :'(