Large object writes can get delayed

For large objects (greater than three segments), the write does not complete until both:

• Slower site is within three segments of completing.
• Faster site has completed.

There is a compromise between competing objectives:

• If either site is available for the entire write the write must succeed.
• Writes should proceed at the speed of the fastest site.

Both requirements cannot be met without an "infinite" amount of memory on the Accesser Node.