무난한 속도인 것 같습니다.

펌웨어 업글을 하면 속도가 안정적으로 올라갑니다.

반드시 firm up 하셔야 합니다.

[root@db etc]# sync && dd if=/dev/zero of=/data/dd_test bs=4k count=1000000 && sync
1000000+0 records in
1000000+0 records out
4096000000 bytes (4.1 GB) copied, 3.49175 s, 1.2 GB/s
[root@db etc]# sync && dd if=/dev/zero of=/data/dd_test bs=4k count=1000000 && sync
1000000+0 records in
1000000+0 records out
4096000000 bytes (4.1 GB) copied, 7.65104 s, 535 MB/s
[root@db etc]# sync && dd if=/dev/zero of=/data/dd_test bs=4k count=1000000 && sync
1000000+0 records in
1000000+0 records out
4096000000 bytes (4.1 GB) copied, 7.64985 s, 535 MB/s
[root@db etc]# sync && dd if=/dev/zero of=/data/dd_test bs=4k count=1000000 && sync
1000000+0 records in
1000000+0 records out
4096000000 bytes (4.1 GB) copied, 7.64724 s, 536 MB/s
[root@db etc]#