When reviewing the actual protection output of N+4/2, what does the number ''4'' represent?
It's OneFS FEC protection nomenclature for our 'hybrid' protection polices. More generally, it's written as:
N+M/b
where 'N' is the number of data stripe units in a stripe, 'M' is the number of FEC stripe units in a stripe, and 'b' is the number of stripe units in a stripe which are allowed to reside on the same node.
What defines FEC link aggregation mode?
References:
126
Isilon Administration and Management participant guide
In Isilon OneFS, what is a characteristic of CoW with snapshots?
With copy on write, as the name suggests, a new write to HEAD results in the old blocks being copied out to the snapshot version first.
Although this incurs a double write penalty, it results in less fragmentation of the HEAD file, which is better for cache prefetch, etc.
Typically, CoW is most prevalent in OneFS and is primarily used for small changes, inodes and directories.
Which OneFS networking option enables Isilon for DNS multitenant functionality?
Groupnets are designed to enable multi-tenant DNS support per access zone.
