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Forum Discussion
Some advice for a prospective buyer
I'm about to pull the trigger on purchasing a ReadyNAS Ultra4 with a few 2TB hard drives to fill it up, but was hoping if someone would be able to give me some advice and do some expectation managemen...
regarding recovery from failed hard drive, yes normally it is as simple as hot-pulling the bad drive, then (carefully) hot-inserting the new drive. Nas will then do a quick smart test, then start initialization of the drive followed by resyncing the array.
all that said, if a second drive fails while the raid is non-redundant, then you will of course lose the array and your data. This will happen for any raid-5 type device, as the array is only designed to withstand 1 drive failure.
As such, its often said that raid is never a substitute for backups, and seems you already aware by having external drives and burning to dvd.
Expansion is as simple as adding the new drive to an empty slot, or (carefully) hot-removing an older drive and hot-adding the larger replacement drive.
with all 4 drives used and the default x-raid2 mode, it will take replacement of 2 drives with a larger size in order to expand.
all that said, if a second drive fails while the raid is non-redundant, then you will of course lose the array and your data. This will happen for any raid-5 type device, as the array is only designed to withstand 1 drive failure.
As such, its often said that raid is never a substitute for backups, and seems you already aware by having external drives and burning to dvd.
Expansion is as simple as adding the new drive to an empty slot, or (carefully) hot-removing an older drive and hot-adding the larger replacement drive.
with all 4 drives used and the default x-raid2 mode, it will take replacement of 2 drives with a larger size in order to expand.
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