Support statement regarding 4K sector disks and Symantec System Recovery (SSR).
|Article:TECH143704|||||Created: 2010-11-08|||||Updated: 2013-11-14|||||Article URL http://www.symantec.com/docs/TECH143704|
This article explains the current support statement for 4K sector (including 'Advanced Format' or '512E') disks and Symantec System Recovery (SSR). This article also applies to Backup Exec System Recovery (BESR) 2010 and earlier.
Currently SSR does not support 'native' 4K sector disks as a backup source (i.e. the drive being backed up). These drives can be used as a backup destination (note limitations mentioned below).
Please refer to the Microsoft support policy for more information: http://support.microsoft.com/kb/2510009.
Use the following steps to determine if your disk is using native 4K sector size or if it is an advanced format/512E disk:
- From a command prompt (run as administrator), run the following command: FSUTIL FSINFO NTFSINFO X: (where X: represents the drive you are checking)
- The following update may need to be installed in order to get the desired output from running the above command: http://support.microsoft.com/kb/982018
- If the ouput of both Bytes Per Sector and Bytes per Physical Sector are 4096, the disk is native 4K - SSR can only use this as a backup destination
- If the output of Bytes Per Sector is 512 and the output of Bytes per Physical Sector is 4096, the disk is advanced format/512E - SSR can use this as a backup source and destination
Limitations when using 4K sector disks as backup destinations:
- Drives will not be listed in the SSR user interface (UI) under Advanced--Drives
- Drives will not be listed in the SSR UI under Tasks--Options--External Drives. This means an alias cannot be used for the drive. Hence, if the drive letter for the drive changes (i.e. due to plug in/out), the backup destination will be reported as unavailable and backups may fail
The screenshot below shows an example of what the FSUTIL output would be when using an advanced format/512 disk:
SSR does not support native 4K disks as a backup source. They are however supported as a backup destination (note limitations above). Note that SSR currently does not display native 4K disks in it's user interface (hence, they cannot be selected for backup).
SSR does support advanced format/512E disks as both backup source and destination.
For more information, please refer to http://support.microsoft.com/kb/2510009.
SSR does not detect external hard disk of size > 3TB as a source drive for the backup
Article URL http://www.symantec.com/docs/TECH143704