A peek within the ΔV kimono ...

What you see below is from a $5400USD list price machine on initial run through, pre-tuning. Please remember that as you look at these numbers. This is less than $1USD per usable GB. Will be formally introduced/announced soon. You can see one live at ohiolinuxfest this weekend (this exact machine as it turns out). This is a RAID6 unit. We could go RAID5 and increase performance, though running in a configuration we do not recommend.

root@dV3:~# df -h /big
Filesystem            Size  Used Avail Use% Mounted on
/dev/md0              5.9T   21G  5.9T   1% /big
root@dV3:~# bonnie++ -u root -d /big -f
[...]
Version 1.03b       ------Sequential Output------ --Sequential Input- --Random-
                    -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
dV3             16G           291317  52 160346  29           499531  35 589.6   1
                    ------Sequential Create------ --------Random Create--------
                    -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
              files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
                 16  6199  31 +++++ +++  4391  17  5649  31 +++++ +++  4290  23
dV3,16G,,,291317,52,160346,29,,,499531,35,589.6,1,16,6199,31,+++++,+++,4391,17,5649,31,+++++,+++,4290,23

buffered writes (2x system ram):

root@dV3:~# dd if=/dev/zero of=/big/big.file bs=1664k count=10k
10240+0 records in
10240+0 records out
17448304640 bytes (17 GB) copied, 51.5349 s, 339 MB/s

buffered reads (2x system ram):

root@dV3:~# dd if=/big/big.file of=/dev/null bs=1664k
10240+0 records in
10240+0 records out
17448304640 bytes (17 GB) copied, 30.8129 s, 566 MB/s