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referencing qnap uk's video https://www.youtube.com/watch?v=B0wVCy7HQIk setting up QuTS hero on a TVS-h874 they recommend building the system pool on the SSD (if installed). they leave it setup as RAID1 by default. as its a system pool and my media will be stored on my spinning HDDs in RAID6 what happens if they system pool fails if i were to set it up as RAID0? will my data be gone on my HDD's also or can i just put new SSD's in and rebuild the NAS. is there a benefit to using RAID1 for the system pool. for reference im using 2x 2TB pci-e gen4 drives as the SSD's as i had them lying around from a previous pc Build
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If you set up the system pool as RAID 0 instead of RAID 1, the main risk is that if the SSDs fail, you won't have redundancy, and you'll lose the system pool. However, your data on the HDDs in RAID 6 would not be affected, as RAID 6 is independent of the system pool. You could replace the failed SSDs, reconfigure the system pool, and rebuild the NAS, but the process would require reinstalling QuTS Hero and reinitializing the system pool.
The benefit of using RAID 1 for the system pool is redundancy: it provides protection if one SSD fails. While RAID 0 gives you a little more speed and usable space, you risk total data loss on the system pool if an SSD fails, as there's no redundancy. For a NAS where uptime and data safety are important, RAID 1 is generally recommended for the system pool, especially if you're using it for system-critical tasks.
