Hi
I just created a RaidZ using 3x 3TB internal drives using this command…
sudo zpool create Ocean raidz /dev/disk4 /dev/disk0 /dev/disk1
It appeared on my desktop as a 6TB drive, as expected. When I ran the command 'diskutil list' i got the following output…
----
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *3.0 TB disk0
1: EFI 209.7 MB disk0s1
2: ZFS 3.0 TB disk0s2
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *3.0 TB disk1
1: EFI 209.7 MB disk1s1
2: ZFS 3.0 TB disk1s2
/dev/disk4
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *3.0 TB disk4
1: EFI 209.7 MB disk4s1
2: ZFS 3.0 TB disk4s2
----
Is this a normal output? It appears that ZFS is present on slice2 of each disk, and there's an EFI on slice1.
I've read that it's preferable for ZFS to use the entire disk rather than a partition, so I specified zpool to use the entire disk in the zpool create command. This doesn't seem to have happened. I'm confused.
How do I get it to use the entire disk? After this, I tried creating 1 partition of 'free space' in Disk Utility but it still has the EFI partition and nothing else.
I'm sure I can delete the EFI partitions for each disk, but I'm not sure how, or even if it's safe to do so. I was under the impression that zpool creates a master EFI for the entire Raidz?
Puzzled.