Seagate 4TB 7200rpm ST4000DX000 on Linux

I just got one of these, it's ripped out of a GoFlex drive.Had to use parted , delete mbr with a gpt table then create fs. This was using ext4 of the whole disk

/dev/sdd1            3845708808    200704 3650157272   1% /mnt

bonnie++ output (16G file, I have 8G mem)

Version  1.96       ------Sequential Output------ --Sequential Input- --Random-
Concurrency   1     -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
lwhx4g          16G   769  97 166652  25 72258  22  3324  88 194838 24 327.4  11
Latency             19333us     495ms     455ms   33401us 74877us     211ms
Version  1.96       ------Sequential Create------ --------Random Create--------
lwhx4g              -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
16 12650  18 +++++ +++ +++++ +++ +++++ +++ +++++ +++ +++++ +++
Latency               105us    1317us     370us     148us 45us     200us
1.96,1.96,lwhx4g,1,1320187623,16G,,769,97,166652,25,72258,22,3324,88,194838,24,327.4,11,16,,,,,12650,18,+++++,+++,+++++,+++,+++++,+++,+++++,+++,+++++,+++,19333us,495ms,455ms,33401us,74877us,211ms,105us,1317us,370us,148us,45us,200us