On 01/11/2023 02:09 AM, Simon Matter wrote: > What I usually do is this: "cut" the large disk into several pieces of > equal size and create individual RAID1 arrays. Then add them as LVM PVs to > one large VG. The advantage is that with one error on one disk, you wont > lose redundancy on the whole RAID mirror but only on a partial segment. > You can even lose another segment with an error on the other disk and > still have redundancy if the error is in another part. > > That said, it's a bit more work to setup but has helped me several times > in the decades ago. > > But is your strategy of dividing the large disk into individual RAID1 arrays also applicable to SSDs? I have heard, perhaps incorrectly, that once a SSD fails, the entire SSD becomes unusable which would suggest that dividing it into multiple RAID1 arrays would not be useful?