3 ms·
The biggest advantage is storage space. You lose more potential storage space with mirroring since it's a 1:1, whereas as raidz1 across 4 drives would give you
by laumars 11y ago
The biggest advantage is storage space. You lose more potential storage space with mirroring since it's a 1:1, whereas as raidz1 across 4 drives would give you much more storage space but with the caveat that you can only lose 1 drive at a time before your entire pool is lost.
- i336_ 11y agoHmm. 15TB definitely sounds nicer than 10.... :D :D I fully intend to buy disks with widely spaced apart manufacturing dates, so theoretically this should be manageable. Now I get why 8 disks is recommended... you can make a mirrored pair of 4-disk raidz1s, you get >50% storage efficiency, and you can lose any two disks before it dies.