Hello, I am currently wanting to add some more space to my current ZFS build, and have 5x3TB drives (WD green and seagate green) drives, can anyone give me the risk of raidz vs raidz2 vs raidz3 (I know that raidz = 1 lost disk, raidz2 = 2 lost disk and raidz3 = 3 disk lost, but how likely Im i going to get an error with 3 TB rebuild??), now I am going to setup a separate array and not put this with my current zpool (15x2tb in raidz2),
if raidz2 or raidz3 is better for 3tb disk, would i be better off just doing mirror dev with the 4 disk that I have now, and adding more mirrors until I get 8-10 disk then rebuilding it into a Raidz2 or Raidz3 zpool (move all data to external drives than back to the new 10 disk Raidz3 would give me 21 TB over 15 TB of storage
dev1
WDG 3TB
WDG 3TB mirror
dev2
SGG 3TB
SGG 3TB mirror
----------
total 6Tb usable, WDG 3TB not used until another drive purchesed
vs Raidz -5 drives
WDG 3TB
WDG 3TB
WDG 3TB
SGG 3TB
SGG 3TB
----------
total 12Tb usable,
vs Raidz2 -5 drives
WDG 3TB
WDG 3TB
WDG 3TB
SGG 3TB
SGG 3TB
----------
total 9Tb usable, mirrors should be faster than raidz2 with 4 drives right??
also if I use Mirror dev, I can mix drives as long as the mirror drives are the same size right?
dev1
WDG 3TB
WDG 3TB mirror
dev2
SGG 3TB
SGG 3TB mirror
dev
WDG 2TB
WDG 2TB mirror
dev
Samsung 1TB
Samsung 1TB mirror
----------
total 9Tb usable,
if raidz2 or raidz3 is better for 3tb disk, would i be better off just doing mirror dev with the 4 disk that I have now, and adding more mirrors until I get 8-10 disk then rebuilding it into a Raidz2 or Raidz3 zpool (move all data to external drives than back to the new 10 disk Raidz3 would give me 21 TB over 15 TB of storage
dev1
WDG 3TB
WDG 3TB mirror
dev2
SGG 3TB
SGG 3TB mirror
----------
total 6Tb usable, WDG 3TB not used until another drive purchesed
vs Raidz -5 drives
WDG 3TB
WDG 3TB
WDG 3TB
SGG 3TB
SGG 3TB
----------
total 12Tb usable,
vs Raidz2 -5 drives
WDG 3TB
WDG 3TB
WDG 3TB
SGG 3TB
SGG 3TB
----------
total 9Tb usable, mirrors should be faster than raidz2 with 4 drives right??
also if I use Mirror dev, I can mix drives as long as the mirror drives are the same size right?
dev1
WDG 3TB
WDG 3TB mirror
dev2
SGG 3TB
SGG 3TB mirror
dev
WDG 2TB
WDG 2TB mirror
dev
Samsung 1TB
Samsung 1TB mirror
----------
total 9Tb usable,
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