As the title says, I’m trying to get the opinion of the community with regards to mirror the boot pool.
I understand the intent and I like to principle behind it. Nowadays the investment of having an additional SSD for a boot pool is minimal.
I understand is not much trouble to replace a failed boot drive and restore a system if a proper backup has been performed. But with a mirror, I wouldn’t have to take the system offline at all until I get a replacement drive and that by itself is more valuable than the price of an extra SSD.
However, I read somewhere that this arrangement doesn’t work like most people think it does. When a drive is about to fail, it produces multiple I/O errors which will then expand to the mirror drive. In this scenario the entire pool would be corrupted and the administrator would have to restore the system from the backup anyways (just as if the system had a single drive).
I honestly never had an SSD die on me so I don’t know if they die like a fuse (they are either good or bad, nothing in between) or if they produce errors on their way out. If the latter is true, then I see little value in mirroring the boot pool.
Opinions?
I understand the intent and I like to principle behind it. Nowadays the investment of having an additional SSD for a boot pool is minimal.
I understand is not much trouble to replace a failed boot drive and restore a system if a proper backup has been performed. But with a mirror, I wouldn’t have to take the system offline at all until I get a replacement drive and that by itself is more valuable than the price of an extra SSD.
However, I read somewhere that this arrangement doesn’t work like most people think it does. When a drive is about to fail, it produces multiple I/O errors which will then expand to the mirror drive. In this scenario the entire pool would be corrupted and the administrator would have to restore the system from the backup anyways (just as if the system had a single drive).
I honestly never had an SSD die on me so I don’t know if they die like a fuse (they are either good or bad, nothing in between) or if they produce errors on their way out. If the latter is true, then I see little value in mirroring the boot pool.
Opinions?