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August 31, 2013
Synology DS413 Drive Crash
The house got struck by lightning a week ago (8/24/13). It crashed the Disk 2 drive in my Synology DS413 12 TB RAID Level 5 NAS. So, today I finally got around to ordering this new drive for it from www.newegg.com:
WD Green WDBAAY0030HNC-NRSN 3TB IntelliPower SATA 3.0Gb/s 3.5" Internal Hard Drive-Retail kit.
I attempted to repair Volume 2, but got an error message: "System Partition Failed". Then, it started a parity check. "Repairing (Checking parity consistency)..."
"Attention: Volume has crashed. Please go to "Storage Manager" for more info/"
http://www.synology.com/support/tutorials_show.php?q_id=485#t3.1
Posted by Rob Kiser on August 31, 2013 at 8:47 PM
Comments
"my Synology DS413 12 TB RAID Level 5 NAS"
RAID is redundancy, not a backup.
Posted by: Robert R. on September 1, 2013 at 3:28 AM
from serverfault.com/questions/2888/why-is-raid-not-a-backup
"In a RAID5 array, consisting of disks over 400Gb,
if you lose a disk there's something like a 75%
chance of having an unrecoverable read error
while the array is being rebuilt. Think about
that for a second and it becomes pretty obvious
why someone will always remind you that 'RAID is
not a backup'."
Posted by: Robert R. on September 1, 2013 at 3:34 AM
No, it is a backup. Because I store the files in multiple locations. It's not an off-site backup, but it is a backup.
Posted by: Rob Kiser 
on September 7, 2013 at 11:44 PM