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Forum Discussion
ReadyNAS: lost data after removing a drive : case #17927967
Details are in the support case. A friend was interested in the build quality of the and removed one the drives and put it back. I experienced errors (in the support case) which I managed to resolve b...
Trusting all of your data to one device, be it a single hard drive or a single RAID device is NOT a backup. If something happens to the device holding all of your data, that is when you need your backup.
As for hard drives not failing withing 3 weeks of use, you as a Professional should know better. Any electronic device is more likely to fail early than later until it gets much older. You should have been trained in backup, backup, backup. That being said, organizations and individuals can make disastrous errors, re: the Danger situation documented in the referenced link by mdgm. The customers of carbonite who thus lost the data they thought was backed up also learned a lesson - never trust your data to a single device -especially if it is in the cloud.
Although not an IT professional, I worked with and beside many in my 35+ year career in accounting and they were almost paranoid about maintaining multiple backups. When I first started they liked to tell the story of one company location that performed a task that corrupted their A/R and billing database, so they removed the corrupted disk, loaded the backup and repeated the operation which corrupted the only copy left - the backup. They failed to copy over their original from the backup. The company then had a policy of never running from a backup. If the original is corrupted, copy over the original from the backup and then, only then proceed.
When I copy data onto my NAS, regardless of source, I never erase the original until after the first backup of my NAS. Please always think of RAID as a convenience so you don't have to start from scratch in case of a disk failure and restore everything from the backup as a best case scenario, not as an absolute.
Keep working with tech support and hopefully they can recover your data. If they do, consider it a near miss.
While I have never experienced a second drive failure during a resync, I know from the number of posts that it is real and can happen. I have have drives give me months of warning about increasing errors, allowing time to make plans to replace the failing drive, and I have had drives fail suddenly overnight with no warning whatsoever. I have had drives fail after years of service and I have had drives fail within the first month of service. In fact the first drive I lost in an NAS was suddenly overnight with no warning less than 30 days after the the setup of my first NAS with only two drives.
Also tell every one to keep their bleeping hands off your NAS.
As for hard drives not failing withing 3 weeks of use, you as a Professional should know better. Any electronic device is more likely to fail early than later until it gets much older. You should have been trained in backup, backup, backup. That being said, organizations and individuals can make disastrous errors, re: the Danger situation documented in the referenced link by mdgm. The customers of carbonite who thus lost the data they thought was backed up also learned a lesson - never trust your data to a single device -especially if it is in the cloud.
Although not an IT professional, I worked with and beside many in my 35+ year career in accounting and they were almost paranoid about maintaining multiple backups. When I first started they liked to tell the story of one company location that performed a task that corrupted their A/R and billing database, so they removed the corrupted disk, loaded the backup and repeated the operation which corrupted the only copy left - the backup. They failed to copy over their original from the backup. The company then had a policy of never running from a backup. If the original is corrupted, copy over the original from the backup and then, only then proceed.
When I copy data onto my NAS, regardless of source, I never erase the original until after the first backup of my NAS. Please always think of RAID as a convenience so you don't have to start from scratch in case of a disk failure and restore everything from the backup as a best case scenario, not as an absolute.
Keep working with tech support and hopefully they can recover your data. If they do, consider it a near miss.
While I have never experienced a second drive failure during a resync, I know from the number of posts that it is real and can happen. I have have drives give me months of warning about increasing errors, allowing time to make plans to replace the failing drive, and I have had drives fail suddenly overnight with no warning whatsoever. I have had drives fail after years of service and I have had drives fail within the first month of service. In fact the first drive I lost in an NAS was suddenly overnight with no warning less than 30 days after the the setup of my first NAS with only two drives.
Also tell every one to keep their bleeping hands off your NAS.
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