Helium scratch update

The NFS scratch file system (/nfsscratch) that was put in place has been working well enough to allow us to investigate alternative options for a more permanent scratch file system. That testing is entering the final phase and should last about another week to week and a half. We hope to have a permanent solution in place for /scratch in about two to three weeks. Additionally, we are planning on leaving /nfsscratch in place as it is more suitable for certain workloads than a parallel file system would be.