Testy rychlosti HDD

xeric:~/test# hdparm -i /dev/sda
/dev/sda:
Model=ST31000524NS, FwRev=SN11, SerialNo=9WK07HZM

xeric:~/test# hdparm -i /dev/sdb
/dev/sdb:
Model=WDC WD5002ABYS-50B1B0, FwRev=02.03B04, SerialNo=WD-WCASY7341465

Test samostatných disků:

xeric:~/test# hdparm -tT /dev/sda
/dev/sda:
 Timing cached reads:   13846 MB in  1.99 seconds = 6958.89 MB/sec
 Timing buffered disk reads:  284 MB in  3.01 seconds =  94.45 MB/sec

xeric:~/test# hdparm -tT /dev/sdb
/dev/sdb:
 Timing cached reads:   13750 MB in  1.99 seconds = 6911.38 MB/sec
 Timing buffered disk reads:  288 MB in  3.02 seconds =  95.21 MB/sec

Test RAID1 partitions, ve kterých jsou oba disky (defaultní parametry RAID):

xeric:~/test# hdparm -tT /dev/md3
/dev/md3:
 Timing cached reads:   14070 MB in  1.99 seconds = 7072.47 MB/sec
 Timing buffered disk reads:  252 MB in  3.01 seconds =  83.73 MB/sec

xeric:~/test# hdparm -tT /dev/md0
/dev/md0:
 Timing cached reads:   13742 MB in  1.99 seconds = 6907.00 MB/sec
 Timing buffered disk reads:  262 MB in  3.01 seconds =  87.03 MB/sec

Test LVM partitiony, která je na md4 (momentálně v md4 chybí 1 disk):

xeric:~/test# hdparm -tT /dev/vg_main/backup-disk 
/dev/vg_main/backup-disk:
 Timing cached reads:   13924 MB in  1.99 seconds = 6999.40 MB/sec
 Timing buffered disk reads:  272 MB in  3.01 seconds =  90.47 MB/sec