Very helpful thanks! On 12/17/2014 04:52 AM, Justin Sherrill wrote: > Short answer: yes, set up swapcache on the SSD and you'll benefit. > That's the goal of swapcache. See the swapcache man page for a guide > on how large to make your partition, and use the rest for / or however > you want to arrange it. > > For the heck of it, instead of swapcache, you could create them as two > Hammer volumes - the SSD as the master, the USB disk as the slave - > and mirror the master to the slave. The mirroring process will not > slow the disk writes, but that will limit you to the size of the SSD. > You'd be able to put a generous history policy on the USB disk and > save a good amount of file history in the extra space. That may not > be what you want. > > > > On Tue, Dec 16, 2014 at 6:05 PM, PeerCorps Trust Fund > <[email protected]> wrote: >> Dear All! >> >> I have set up a gigabit LAN and have been testing the use of a laptop as a >> file server/NAS over NFS. The server in question has a 2 terabyte external >> hard disk attached via USB 2.0. The laptop itself has a 120 gigabyte SSD >> installed as its main drive. My question is whether there might be a way to >> use Dragonfly's swapcache on the SSD in order to get the maximum speed out >> of the network to transfer files to the laptop's SSD while it writes to the >> external drive simultaneously in the background? Is there a way to for >> example increase the size of the swapcache to say 50 gigabytes and route the >> writes to it (and possibly other disks mounted elsewhere)? >> >> I've tested writes directly over the LAN to the SSD and it tops out at >> around 120 megabytes per second...which is phenomenal. However when writing >> to the disk I get speeds of around 18-22 megabytes per second. Not horrible, >> but quite a substantial difference. >> >> Any tips would be extremely appreciated. >> >> M
-- Michael L. Wilson International Project Coordinator PeerCorps Trust Fund - Tanzania
