Partitioning Question

I was told that on the bootable drive, slice 02 is reserved for system usage. Is this true?

In our deployment each server is equipped with a hardware RAID adapter. The current plan is to create the slices as follows:

c1t0d0s0 = swap 16386
c1t0d0s1 = /var 15366
c1t0d0s2 = / free

Does this work?

Please forgive if this is a silly question, I'm still brand new to solaris on sparc servers.

Slice 2 is a backup slice representing the entire Solaris partition / physical disk. Skip it and go on to slice 3.

Do NOT use slice 2 for ANY reason.

you can use a EFI label on the disk which don't use the slice2 as backup slice. but the better solution might be:

c1t0d0s0 /
c1t0d0s1 swap
c1t0d0s3 /var

Not sure booting EFI disks is supported though.

Another comment, slice 2 is probably just a legacy convention these days. I never tried it but I suspect manually setting it as a regular non overlapping slice should just work. I wouldn't recommend doing it though, being confusing for people used to the convention.