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Forum Discussion
kncomputers
Oct 07, 2025Aspirant
ReadyNAS212
We want to install new hard disk Toshiba N300 8TB in 2nd slot of our existing ReadyNAS212 with WD RED Plus 8TB. Need guidance so we shall not lost our data of existing WD RED 8TB
StephenB
Oct 07, 2025Guru - Experienced User
kncomputers wrote:We want to install new hard disk Toshiba N300 8TB in 2nd slot of our existing ReadyNAS212 with WD RED Plus 8TB. Need guidance so we shall not lost our data of existing WD RED 8TB
Best practice is to make sure you have a backup before manipulating disks. (FWIW, RAID is not enough to protect your data, so you should have a backup plan in place anyway).
The precise steps depend on whether you are wanting to expand capacity, or whether you are wanting to create RAID-1 redundancy. So please post back with your intent.
Personally I always test new disks in a Windows PC before installing them in the NAS. I'd rather detect out-of-the-box failures before I install them. I start with a full non-destructive test, followed by a full write-zeros test. I have had some drives pass one of these tests, but fail the other.
Toshiba allegedly has a diagnostic utility, but I am not seeing how to download it. Seatools might work, or you could try some other test tool.
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