Here are the results of the hdparm
pi@nas:~ $ sudo hdparm -Tt /dev/sda /dev/sda
/dev/sda:
Timing cached reads: 1562 MB in 2.00 seconds = 781.32 MB/sec
Timing buffered disk reads: 252 MB in 3.01 seconds = 83.76 MB/sec
/dev/sda:
Timing cached reads: 1484 MB in 2.00 seconds = 742.32 MB/sec
Timing buffered disk reads: 252 MB in 3.51 seconds = 71.87 MB/sec
pi@nas:~ $ sudo hdparm -Tt /dev/sdb /dev/sdb
/dev/sdb:
Timing cached reads: 1478 MB in 2.00 seconds = 739.55 MB/sec
Timing buffered disk reads: 272 MB in 3.41 seconds = 79.79 MB/sec
/dev/sdb:
Timing cached reads: 1488 MB in 2.00 seconds = 743.97 MB/sec
Timing buffered disk reads: 252 MB in 3.36 seconds = 74.98 MB/sec
pi@nas:~ $ sudo hdparm -Tt /dev/sdc /dev/sdc
/dev/sdc:
Timing cached reads: 1482 MB in 2.00 seconds = 740.93 MB/sec
Timing buffered disk reads: 272 MB in 3.13 seconds = 86.82 MB/sec
/dev/sdc:
Timing cached reads: 1500 MB in 2.00 seconds = 750.39 MB/sec
Timing buffered disk reads: 252 MB in 3.42 seconds = 73.72 MB/sec
pi@nas:~ $ sudo hdparm -Tt /dev/sdd /dev/sdd
/dev/sdd:
Timing cached reads: 1446 MB in 2.00 seconds = 722.77 MB/sec
Timing buffered disk reads: 252 MB in 3.26 seconds = 77.19 MB/sec
/dev/sdd:
Timing cached reads: 1470 MB in 2.00 seconds = 734.73 MB/sec
Timing buffered disk reads: 252 MB in 3.27 seconds = 76.98 MB/sec
It’s a little slow but nothing big came up.