Dummy Intel Xeon X3440 testing on CentOS Linux 7 via the Phoronix Test Suite. Logical Volume: Processor: Intel Xeon X3440 @ 2.53GHz (8 Cores), Motherboard: Supermicro X8SIL v0123456789, Memory: 4 x 4096 MB DDR3-1333MHz Kingston, Disk: 500GB Logical Volume + 39 x 600GB MBF2600RC + 3 x 600GB HUC109060CSS600 + 2 x 600GB Seagate ST9600205SS OS: CentOS Linux 7, Kernel: 4.4.21-zfs-std-64 (x86_64), Compiler: GCC 4.8.5 20150623, File-System: tmpfs Threaded I/O Tester 0.3.3 Test: Read - Size Per Thread: 64MB - Thread Count: 8 MB/s > Higher Is Better Logical Volume . 13735.39 |==================================================== Threaded I/O Tester 0.3.3 Test: Write - Size Per Thread: 64MB - Thread Count: 8 MB/s > Higher Is Better Logical Volume . 8816.87 |===================================================== Threaded I/O Tester 0.3.3 Test: Random Read - Size Per Thread: 64MB - Thread Count: 8 MB/s > Higher Is Better Logical Volume . 10091.43 |==================================================== Threaded I/O Tester 0.3.3 Test: Random Write - Size Per Thread: 64MB - Thread Count: 8 MB/s > Higher Is Better Logical Volume . 8941.55 |=====================================================