2.7TB RAID Volume can only partition 2.1TB

[Guest cmcnamee@gmail.com]

Hi Folks, I admit I am most likely doing something wrong. I have a new

server with 2.7TB RAID 5 volume (spread among 7 500GB disks), I have a

100GB

NTFS boot partition and a 2TB NTFS data partition. I have 743GB of

unallocated space left within the RAID container that is recognized by

the

windows Disk Management utility. If I right click the 743GB of

unallocated

space the create partition option is grayed out. If I delete the 2TB

data

partition I see two sections of unallocated space (2TB & 743GB) rather

than

one large section unallocated space.

 

Could anyone point me to what I am doing wrong here?

-Curt

[Guest John Toner [MVP]]

Re: 2.7TB RAID Volume can only partition 2.1TB

 

I would guess that your partition is not a GPT disk. MBR disks do not

support partitions larger than 2TB. See the following for more details:

 

http://www.microsoft.com/whdc/device/storage/GPT_FAQ.mspx

 

To convert a disk from MBR to GPT, this is a destructive process. You would

need to delete all partitions on the disk, convert to GPT, then re-create

any partitions (and restore data as needed).

 

Regards,

John

 

Visit my blog: http://msmvps.com/blogs/jtoner

 

<cmcnamee@gmail.com> wrote in message

news:1190912463.287021.106440@o80g2000hse.googlegroups.com...

> Hi Folks, I admit I am most likely doing something wrong. I have a new

> server with 2.7TB RAID 5 volume (spread among 7 500GB disks), I have a

> 100GB

> NTFS boot partition and a 2TB NTFS data partition. I have 743GB of

> unallocated space left within the RAID container that is recognized by

> the

> windows Disk Management utility. If I right click the 743GB of

> unallocated

> space the create partition option is grayed out. If I delete the 2TB

> data

> partition I see two sections of unallocated space (2TB & 743GB) rather

> than

> one large section unallocated space.

>

> Could anyone point me to what I am doing wrong here?

> -Curt

>

[Guest WorkingHard]

Re: 2.7TB RAID Volume can only partition 2.1TB

 

Your disk controller will most likely not create virtual disks larger than 2

TB.

<cmcnamee@gmail.com> wrote in message

news:1190912463.287021.106440@o80g2000hse.googlegroups.com...

> Hi Folks, I admit I am most likely doing something wrong. I have a new

> server with 2.7TB RAID 5 volume (spread among 7 500GB disks), I have a

> 100GB

> NTFS boot partition and a 2TB NTFS data partition. I have 743GB of

> unallocated space left within the RAID container that is recognized by

> the

> windows Disk Management utility. If I right click the 743GB of

> unallocated

> space the create partition option is grayed out. If I delete the 2TB

> data

> partition I see two sections of unallocated space (2TB & 743GB) rather

> than

> one large section unallocated space.

>

> Could anyone point me to what I am doing wrong here?

> -Curt

>

[Guest cmcnamee@gmail.com]

Re: 2.7TB RAID Volume can only partition 2.1TB

 

On Sep 27, 10:42 am, "John Toner [MVP]" <jto...@DIE.SPAM.DIE.mvps.org>

wrote:

> I would guess that your partition is not a GPT disk. MBR disks do not

> support partitions larger than 2TB. See the following for more details:

>

> http://www.microsoft.com/whdc/device/storage/GPT_FAQ.mspx

>

> To convert a disk from MBR to GPT, this is a destructive process. You would

> need to delete all partitions on the disk, convert to GPT, then re-create

> any partitions (and restore data as needed).

>

> Regards,

> John

>

> Visit my blog:http://msmvps.com/blogs/jtoner

>

> <cmcna...@gmail.com> wrote in message

>

> news:1190912463.287021.106440@o80g2000hse.googlegroups.com...

>

> > Hi Folks, I admit I am most likely doing something wrong. I have a new

> > server with 2.7TB RAID 5 volume (spread among 7 500GB disks), I have a

> > 100GB

> > NTFS boot partition and a 2TB NTFS data partition. I have 743GB of

> > unallocated space left within the RAID container that is recognized by

> > the

> > windows Disk Management utility. If I right click the 743GB of

> > unallocated

> > space the create partition option is grayed out. If I delete the 2TB

> > data

> > partition I see two sections of unallocated space (2TB & 743GB) rather

> > than

> > one large section unallocated space.

>

> > Could anyone point me to what I am doing wrong here?

> > -Curt

 

John, that is exactly the problem. Thank you so much for your help.

I have to split my original RAID volume into two volumes (100GB Boot &

2.6TB data). The 100GB volume will be recognized as a regular MBR

disk in windows, however the 2.6TB volume will become a GPT disk and I

should be good to go.

 

Thanks again for your help!

-Curt

[Guest Mathieu CHATEAU]

Re: 2.7TB RAID Volume can only partition 2.1TB

 

Hello,

 

think about chkdsk time & defrag & Disaster recovery...

 

 

--

Cordialement,

Mathieu CHATEAU

http://lordoftheping.blogspot.com

 

 

<cmcnamee@gmail.com> wrote in message

news:1190912463.287021.106440@o80g2000hse.googlegroups.com...

> Hi Folks, I admit I am most likely doing something wrong. I have a new

> server with 2.7TB RAID 5 volume (spread among 7 500GB disks), I have a

> 100GB

> NTFS boot partition and a 2TB NTFS data partition. I have 743GB of

> unallocated space left within the RAID container that is recognized by

> the

> windows Disk Management utility. If I right click the 743GB of

> unallocated

> space the create partition option is grayed out. If I delete the 2TB

> data

> partition I see two sections of unallocated space (2TB & 743GB) rather

> than

> one large section unallocated space.

>

> Could anyone point me to what I am doing wrong here?

> -Curt

>

[Guest Ben]

Re: 2.7TB RAID Volume can only partition 2.1TB

 

On Sep 27, 10:42 am, "John Toner [MVP]" <jto...@DIE.SPAM.DIE.mvps.org>

wrote:

> I would guess that your partition is not a GPT disk. MBR disks do not

> support partitions larger than 2TB. See the following for more details:

>

> http://www.microsoft.com/whdc/device/storage/GPT_FAQ.mspx

 

Aren't these three statements true? If so, you could setup a MBR

style partition as long it was a Dynamic Volume and had correct

cluster size.

 

a) Maximum size of dynamic volume is "maximum volume size of the file

system used to format the volume."

(http://technet.microsoft.com/en-us/library/bb457110.aspx)

 

 

b) Maximum size for NTFS volume is 2^32 clusters (minus a cluster).

Some examples:

For 64 KB cluster, max size of NTFS volume is 256 TB.

For 4 KB cluster, max size of NTFS volume is 16 TB.

(http://www.microsoft.com/windowsserversystem/storage/

getstorfacts.mspx)

 

 

c) Maximum size of Basic volume is 2TB regardless of cluster size.

(http://technet.microsoft.com/en-us/library/bb457110.aspx)

[Guest John Toner [MVP]]

Re: 2.7TB RAID Volume can only partition 2.1TB

 

The following is from

http://www.microsoft.com/windowsserversystem/storage/getstorfacts.mspx

 

---

Maximum size of a dynamic volume - 2 TB for simple and mirrored (RAID-1)

volumes. Up to 64 TB for spanned and striped (RAID-0) volumes. (2 TB per

disk with a maximum of 32 disks per volume.) Up to 62 TB for RAID-5 volumes.

(2 TB per disk with a maximum of 32 disks per volume and 2 TB used for

parity.)

---

 

Just making a disk dynamic does not bypass the limits of MBR.

 

Regards,

John

 

Visit my blog: http://msmvps.com/blogs/jtoner

 

"Ben" <blargg27@gmail.com> wrote in message

news:1190928581.448573.109080@w3g2000hsg.googlegroups.com...

> On Sep 27, 10:42 am, "John Toner [MVP]" <jto...@DIE.SPAM.DIE.mvps.org>

> wrote:

> > I would guess that your partition is not a GPT disk. MBR disks do not

> > support partitions larger than 2TB. See the following for more details:

> >

> > http://www.microsoft.com/whdc/device/storage/GPT_FAQ.mspx

>

> Aren't these three statements true? If so, you could setup a MBR

> style partition as long it was a Dynamic Volume and had correct

> cluster size.

>

> a) Maximum size of dynamic volume is "maximum volume size of the file

> system used to format the volume."

> (http://technet.microsoft.com/en-us/library/bb457110.aspx)

>

>

> b) Maximum size for NTFS volume is 2^32 clusters (minus a cluster).

> Some examples:

> For 64 KB cluster, max size of NTFS volume is 256 TB.

> For 4 KB cluster, max size of NTFS volume is 16 TB.

> (http://www.microsoft.com/windowsserversystem/storage/

> getstorfacts.mspx)

>

>

> c) Maximum size of Basic volume is 2TB regardless of cluster size.

> (http://technet.microsoft.com/en-us/library/bb457110.aspx)

>