32-bit support is a sore spot caused by differences in how Solaris and Linux do memory allocations. Expect to see it fixed in the next 6 months. That aside, >9

32-bit support is a sore spot caused by differences in how Solaris and Linux do memory allocations. Expect to see it fixed in the next 6 months. That aside, >99% of memory used by ZFS on many systems is used for cache. It does not need that to operate, but like all filesystems, it performs better with more cache.