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HP Array Configuration Utility -- Expand Function - - Taking to long

I have a HP ML370 G4  running Windows 2003 Standard. I currently have 4x 146GB u320 hard drives in raid-5. My company just purchased two additional u320 to expand the array. I opened the HP Array Configuration Utility and selected the expand function. To expand the array to see the 284GB of additional space.  This expand is running online and at high priority. How long will this process take? Right now it's been running for 72 hours and its still running? I'm able to access all my shares on the array ok still. Is this normal? How will I know when this is complete?
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compdigit44
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compdigit44
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andyalderSaggar makers bottom knockerCommented:
4 GB per hour is the standard referred in all the documentation although that was written for 7.2K disks so you may get better if you have 10K or 15K ones. It takes a long time since it has to preserve redundancy and not reduce performance as seen by the user. The rebuild rate setting also affects expansion rate but don't change it now or it may start again from scratch.
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andyalderSaggar makers bottom knockerCommented:
I calculate 4.5 days but that is based on the 4GB/h and the current size of the logical disk that has to be spread from 4 disk array to 6 disk array and it assumes a light user load. You could do it in a tenth of the time at the sacrifice of a coule of hours redundancy but that isn't the way it is designed.

When you open the ACU you should get a warning that expansion is taking place, you can verify that because you cannot select an option to change the stripe size of a logical disk for example. The array diagnostic utility under the same menu will tell you for sure but it's in text format and sometimes needs an interpreter.
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compdigit44Author Commented:
When I open the ACU and click on the yellow warning message it states: An expansion is currently running .......... After this process finishes will the array automatically see the space on the 2 new drives or is there another step I need to do yet?
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andyalderSaggar makers bottom knockerCommented:
After that finishes you can either expand the current logical drive or create a new one on the remaining space. If the data is on a seperate logical disk than the OS then you can expand that logical disk, if it is on the same logical drive it is best to create another so as to avoid trying to expand the C: drive which has to be done offline with a third party utility since diskpart.exe can't expand the boot drive. Don't convert C: to dynamic in the hope of that allowing expansion because it doesn't and the 3rd party tools won't expand dynamic disks.
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compdigit44Author Commented:
I plan on using Computer Managment expand the reset of the disk space. How long will this provess take?
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andyalderSaggar makers bottom knockerCommented:
Don't use computer management to expand, it means you have to convert to dynamic which is not reversible. Use diskpart.exe, then it can stay basic. Doesn't take long since it just has to extend the filesystem, maybe half an hour. Should be done without any load so it is advisable to pull the NIC cables out and stop most of the application services like Exchange or SQL.
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compdigit44Author Commented:
Diskpart.exe is part of the windows 2003 resource kit correct?
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andyalderSaggar makers bottom knockerCommented:
With 2000 it was in the resource kit but If I remember correctly it's installed by default in 2003.
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compdigit44Author Commented:
what would the syntax look like???
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andyalderSaggar makers bottom knockerCommented:
http://support.microsoft.com/kb/325590

Has it finished expanding yet?
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compdigit44Author Commented:
Nope, it's still running...This is on a file server so users are accessig it so this is probably slowing thing down....I have about 60 users in my enviroment.

Thanks,
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Computer101Commented:
Forced accept.

Computer101
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