Sign in with
Sign up | Sign in
Your question
Solved

How do I remove the 2TB limit on my RAID5

Last response: in Storage
Share
September 25, 2013 7:33:51 AM

Hi guys,

I have an ASUS Rampage IV Extreme motherboard that I'm very sure has UEFI. I set it to RAID mode in the BIOS and managed to join my 4x3TB WD Green hard drives. I then proceeded to installing Windows 7 on the single partition created and I finished off by installing Intel Rapid Storage Technology enterprise (IRSTe). My problem is that, even though IRSTe and Disk Management are showing the total space and recognizing the RAID 5, I can't seem to change it to GPT or delete any volume, so that My Computer shows the 8TB instead of 2TB. In disk management, Format, Add Mirror and Delete volume are greyed out, and I know it is because my system files are on that Partition, only Properties and Help are available options on the unallocated space. What can I do to resolve this?

Thanks for your help.

More about : remove 2tb limit raid5

a c 324 G Storage
September 25, 2013 7:44:02 AM

Did you format them as GPT drives before building the RAID array? If not, I would break up and delete the array and start over.

All are connected to the 3Gbps black ports correct?

And you aren't running your OS off a Green drive or array of them are you? They are not great for RAID due to the rapid head parking and are rather slow for OS drives.
m
0
l
September 25, 2013 8:38:42 AM

RealBeast said:
Did you format them as GPT drives before building the RAID array? If not, I would break up and delete the array and start over.

All are connected to the 3Gbps black ports correct?

And you aren't running your OS off a Green drive or array of them are you? They are not great for RAID due to the rapid head parking and are rather slow for OS drives.


No, I did not, I couldn't find the option in the BIOS, and I don't know of any other way of doing so without installing the OS. Yes, hey are all connected to the 3Gbps black ports.

I am running the OS off the green drive. Like you said they are slow, but I will be stuck with that for a while until i buy an SSD.

Thanks for your reply, if you know of a way of formatting them as GPT drives before OS installation do tell.
m
0
l
Related resources
a c 76 G Storage
September 25, 2013 10:08:54 AM

If DM shows over 2TB volume, then it means there is nothing wrong with the RAID volume

You need to clean it with diskpart command

Run Command Prompt as Admin

Select the disk, then clean it

Once you clean it, go back to the DM re-partition

Do you need step by step procedure? If you do let me know
m
0
l
September 25, 2013 10:41:45 AM

FireWire2 said:
If DM shows over 2TB volume, then it means there is nothing wrong with the RAID volume

You need to clean it with diskpart command

Run Command Prompt as Admin

Select the disk, then clean it

Once you clean it, go back to the DM re-partition

Do you need step by step procedure? If you do let me know


Thank you, I managed to clean it, and thanks to your answer I managed to find out how to change the disk to GPT prior Windows installation. Only problem now, is that it's taking ages to format in disk part, about 1% since 2 hours ago. So if I run into any other problems, I will update.

Can I skip the formatting, after I GPT in disk part?
m
0
l
September 25, 2013 10:50:15 AM

This is how to GPT before Windows installation:
On the Windows Installation screen before selecting "Install Now"
•Shift and F10
•type " diskpart.exe " hit enter
•type " list disk " hit enter
•type " Select disk #" hit enter ( # refers to the disk number)
•type " clean " hit enter
•type " convert GPT " hit enter
•type " create partition primary
close the window.
m
0
l
a c 76 G Storage
September 25, 2013 10:57:17 AM

ksamba said:
FireWire2 said:
If DM shows over 2TB volume, then it means there is nothing wrong with the RAID volume

You need to clean it with diskpart command

Run Command Prompt as Admin

Select the disk, then clean it

Once you clean it, go back to the DM re-partition

Do you need step by step procedure? If you do let me know


Thank you, I managed to clean it, and thanks to your answer I managed to find out how to change the disk to GPT prior Windows installation. Only problem now, is that it's taking ages to format in disk part, about 1% since 2 hours ago. So if I run into any other problems, I will update.

Can I skip the formatting, after I GPT in disk part?


The format part is not a major issue, the rebuild time that you need to look at...
You can skip the formatting, but test the rebuild to see how slow/fast it rebuid

If it takes days then it is not good, because during rebuild another HDD failed you data is toasted.

Here is how to check it
Hot remove a raid member, wait for 20sec plug it back in
- A good raid5 engine it should automatically rebuild w/o user interfere
- See how fast it rebuild. If it's too slow you need to take a look at an alternative RAID engine
- While it rebuild, can you access your data? if you can not, then you have a not so good raid engine
m
0
l
September 25, 2013 11:38:37 AM

FireWire2 said:
ksamba said:
FireWire2 said:
If DM shows over 2TB volume, then it means there is nothing wrong with the RAID volume

You need to clean it with diskpart command

Run Command Prompt as Admin

Select the disk, then clean it

Once you clean it, go back to the DM re-partition

Do you need step by step procedure? If you do let me know


Thank you, I managed to clean it, and thanks to your answer I managed to find out how to change the disk to GPT prior Windows installation. Only problem now, is that it's taking ages to format in disk part, about 1% since 2 hours ago. So if I run into any other problems, I will update.

Can I skip the formatting, after I GPT in disk part?


The format part is not a major issue, the rebuild time that you need to look at...
You can skip the formatting, but test the rebuild to see how slow/fast it rebuid

If it takes days then it is not good, because during rebuild another HDD failed you data is toasted.

Here is how to check it
Hot remove a raid member, wait for 20sec plug it back in
- A good raid5 engine it should automatically rebuild w/o user interfere
- See how fast it rebuild. If it's too slow you need to take a look at an alternative RAID engine
- While it rebuild, can you access your data? if you can not, then you have a not so good raid engine


It did rebuild in a short time and I could access my data (without the disk and when it was rebuilding), thanks a bunch, I really appreciate it.
m
0
l

Best solution

a c 906 G Storage
September 25, 2013 8:17:35 PM

You also will need to install windows in efi/uefi mode which is what your original problem was I beleive.
Bootable partition otherwise are limited to 2tb.

http://rog.asus.com/forum/showthread.php?30520-RAMPAGE-...
Share
September 26, 2013 2:37:01 AM

popatim said:
You also will need to install windows in efi/uefi mode which is what your original problem was I beleive.
Bootable partition otherwise are limited to 2tb.

http://rog.asus.com/forum/showthread.php?30520-RAMPAGE-...


I already had UEFI, but my flash wasn't. I had to reformat it using "Rufus" to make it a "GPT partition scheme for UEFI computer".

Here is the tutorial:
http://www.eightforums.com/tutorials/15458-uefi-bootabl...

Thank you for the help.

m
0
l
!