cannot extend ntfs disk from 2tb to 2.5tb

Question

_{Saturday, August 15, 2015 6:58 PM}

hi,

I have a NAS with RAID5 where I store my backups (I know raid5 is not the best choice, but the data is also stored in the cloud, so I am not really concerned about this.).

Over the years I have already performed the disk extension procedure a few times, because my backup LUN was full. At the moment, the iSCSI disk has a size of 2048GB. Since I only have about 50GB free space, I extended the LUN on my NAS and  according to the disk management tool of Win Server 2008 the free space is available, but I am not able to extend the existing volume and add the free space to my backup disk. the extend volume menu strip item is simply greyed out.

Since this https://technet.microsoft.com/en-us/library/cc938432.aspx states that

"For now, 2 terabytes should be considered the practical limit for both physical and logical volumes using NTFS."

I can only use 2TB NTFS disks. But what am I supposed to do now? Is there any way to bypass this restriction? Since I am using Windows Server Backup, I haven't figured out how to use another filesystem, cause windows backup formats the disk itself... and its also not possible to prune data from the incremental backup :(

hope somebody can help me

best regards

thomas

All replies (2)

_{Saturday, August 15, 2015 7:10 PM ✅Answered}

Hi

 i think disk has MBR disk partitions,and you need to convert it to GPT

Check this article for convert

https://technet.microsoft.com/en-us/library/cc725671.aspx?f=255&mspperror=-2147217396

_{Monday, August 17, 2015 1:30 PM}

As Burak said, the disk may be set a MBR in the first place, which has a 2TB limitation.

To convert to GPT, you will have to delete and re-create the disk. Backup data to another location first. 

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