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can't partition 4TB disk win 2008 R2

Hi

New Server, DL370 G7, 8TB of disks raided to about 6TB using raid 5. I created an 80gb disk for the system using the HP-Smartstart which appears to also have created a a 2TB disk at the same time as I didn't do this but I now have also a 4TB space I can't partition under windows and can't see how I go about getting access to it.

Greyed out menu - how do we partition this
Are we really still stuck with Max 2TB disks under windows 2008 R2 sp1, I was hoping for a nice big 6 TB disk.
Are there some tools so I can break it into usable partitions, nothing seems available with HP Smartstart tools or under windows.

TIA
Jo
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Jo Cox
Asked:
Jo Cox
1 Solution
 
andyalderSaggar makers bottom knockerCommented:
Boot Smartstart and run the array configuration utility (under maintenance). Delete current logical disks, create new logical disk (say 100GB) for OS and another for data. You will then have two "slices" through the array of disks, you can even pick different RAID levels for them although they are on the same set of spindles. Then re-run smartstart install.

You're limited to 2TB boot disk since server does not have UEFI firmware, but a 100GB* OS disk plus 5.9TB data disk should do.

* don't make it too small since you can't adjust by taking from D: and adding to C: if C: gets short of space.
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Miguel Angel Perez MuñozCommented:
Basic disk are limited to 2Tb. You must to convert your disk to GPT disk to create partition bigger than 2Tb.
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Jo CoxAuthor Commented:
That is pretty much what I have done.

I have an 80GB OS disk and the rest should be data but I can't get access to the data partition. The option to create a volume is greyed out!!

I the pic you can see I have a 2TB and 4 TB disk. I deally I'd like one 6TB volume.
I can create a 2TB Volume
I can't create any volumes in the 4TB space as it is all greyed out.
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Jo CoxAuthor Commented:
OK, GPT, good idea.
How?
All I have is a greyed out menu?
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andyalderSaggar makers bottom knockerCommented:
It's *not* what you have done. You have partitioned it in software under Windows; you have to partition it in hardware using the ACU instead so that Windows sees what it thinks are two physical disks.

Pity about the wasted time but you have to wipe it and start again with two logical disks.
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Jo CoxAuthor Commented:
Monsieur andyalder,
Not as far as I am aware. Smartstart asked me for a partition size for the OS, I requested 80GB (approx). This is what turned up under windows when it booted.

By the looks of things I'll be booting back from the Smartstart disk and repartitioning. But even if I end up with a 100 GB system and the rest as a 6TB which I then can't create a volume in in the same way as I can't create a volume in the existing 4TB.

Am I missing something really basic here.
Can I get a 6TB volume under windows 2008R2. Do I have to create 2TB partitions with smartstart so I end up with 3*2TB vols.
How can convert to GPT's to get larger volumes?
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andyalderSaggar makers bottom knockerCommented:
SmartStart isn't very clever; it does create a logical disk greater than 2TB and then partition it under Windows by default. This is no use at all as you are experiencing at the moment. (OK, you didn't create one large disk and partition it under Windows, but you let SmartStart do that)

You need to do the ACU bit before the install bit, sorry, I didn't write SmartStart.

Once you have two logical disks you can convert the second one to GPT after installing Windows on the smaller one, you can't convert the system disk to GPT.
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Jo CoxAuthor Commented:
OK, I think  got it, thanks for explanation.
We bought the server from Hardware.com who pre-built and configured it. They built the whole set of disks into a single partition raid5. As so I skipped the ACU config part.

So back to stage 1. I'll see if this works how we expect it to. Thanks Again
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noxchoCommented:
Does your motherboard support UEFI? If yes then you can install OS onto GPT drive and use the configuration as single HDD of 6TB and boot from it.
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andyalderSaggar makers bottom knockerCommented:
No it doesn't, I said that in my first post. That is why they have to use the simple workaround of having two logical disks on one set of spindles.
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Jo CoxAuthor Commented:
Mr andyalder

Quite right, all went as you explained.
Can't ask for more than that, very grateful.
Regards
Jo
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