My backup keeps failing with the following error message:
Request could not be performed because of I/O error
I was able to successfully perform a full backup initially but that’s it.
[reply=“Liz;d9345”]
This error usually comes from Windows and may happen due to various reasons:
[list]
[] Windows uses a transfer mode that the hardware device cannot.
[] OS is trying to get more IOPS from the HDD than the drive can provide.
[*] The drive is damaged, e.g., there is a bad spot on the disk.
[/list]
Unfortunately, there are not so many things we can do about it. However, you can try the following changes:
[list]
[] Decrease thread count to 2 in Tools > Options > Advanced.
[] Don’t run the backup in high load hours (non-working hours are recommended).
[*] In case the disk is External USB-drive, you can try to reinstall the Disk driver from Windows side: Go to Device Manager, right-click your device’s name, and select Uninstall. Keep your device connected. Restart the PC and Windows will attempt to reinstall the driver.
[/list]
If all of the measures above are taken, and the issue persists, it points to a hardware problem. As general suggestions, I can advise:
[list]
[] Check the S.M.A.R.T. status of the physical drive that is backed up, for example, with this tool - http://hdtune.com/
[] Check that drive’s partition file system integrity by executing in elevated CMD: chkdsk E: /f
[/list]
You might need to schedule a check on the next run if it cannot be performed immediately.
Also, you may want to check the drive by Victoria For HDD:
http://hardware-today.com/articles/hdds/victoria_performance_evaluation_testing_and_minor_hdd_repairs
It should work fine with SCSI devices and RAIDs.
If nothing helps, please open a case with our support team.
ok I will try this