question on controller and HDD?

itdaddy

Hey raid gurus?

I am starting a project to resize a server raid set
from 1.5 total GBs to like 4-5 GBs..

say you have 6 raid drives and it is raid 6 setup.
can I just xxcopy the data to a usb drive and then
pull the existing drives out and exchange them with
larger drives, create the raid 6 set with 6 larger drives say
1TB each? so that is 1TB x 6 which is what 5 TBs total or is it only 4 TB max in size since it is raid 6? and will the controllers handle the size increase or does it even matte? wasnt sure if controller had a limit?
and any unforseen things I should look for when increasing my data raid sets? any gotchas I am missing:

summary:

1. xxcopy all data time stamped, permissions and data to usb drive
2. mark and pull out raid drives alll 6 of them
3. replace the removed drives with 6 1 TB drives
4. create raid 6 set with 6 drives
5. create the volumn and format it ntfs
6 xxcopy data from usb back over to new raid set?

is this it or am i limited on controller and 1TB size conflict? just wasnt sure. I do not think so But I dont know everthing
thanks everyone

gateway

I guess that depends on what redundancy you are trying to achieve and what raid controller you are using. Also dont forget that if you are increasing the size of the disks in such a big way, make sure you have a backup device that can handle the increase in data.

demonfurbie

RAID Calculator by ICC (International Computer Concepts)

should help you calculate size

make sure your backup is raided as well or you could loose it on the backup its self

itdaddy

thanks a lot dudes wow super calculator and yeh going to have to buy some 4tb usb drives sweet!