[zfs-discuss] Re: Re: please remove my ignorance of raiding andmirroring

2006-10-01 Thread Anton B. Rang
I was perhaps slightly hasty; RAID-5 is more efficient than a 2-disk mirror for reads, but RAID-10 (striping & mirroring) can match (or slightly exceed) its efficiency for small reads. In both cases, there is a single disk accessed. With 4 disks, RAID-1+0 can service four independent reads concu

Re: [zfs-discuss] Re: Fastest way to send 100gb ( with ZFS send )

2006-10-01 Thread Al Hopper
On Sun, 1 Oct 2006, Darren J Moffat wrote: > Matthew Ahrens wrote: > > Anantha N. Srirama wrote: > >> You're most certainly are hitting the SSH limitation. Note that > >> SSH/SCP sessions are single threaded and won't utilize all of the > >> system resources even if they are available. > > > > You

Re: [zfs-discuss] Re: Fastest way to send 100gb ( with ZFS send )

2006-10-01 Thread Darren J Moffat
Matthew Ahrens wrote: Anantha N. Srirama wrote: You're most certainly are hitting the SSH limitation. Note that SSH/SCP sessions are single threaded and won't utilize all of the system resources even if they are available. You may want to try 'ssh -c blowfish' to use the (faster) blowfish enc