Linux: Comparativa caixa externa USB 2.0 i 3.0 amb hdparm

USB 2.0

/dev/sdc:
 Timing cached reads:   25366 MB in  2.00 seconds = 12699.41 MB/sec
 Timing buffered disk reads: 116 MB in  3.01 seconds =  38.60 MB/sec

/dev/sdc:
 Timing cached reads:   27466 MB in  2.00 seconds = 13750.05 MB/sec
 Timing buffered disk reads: 118 MB in  3.05 seconds =  38.71 MB/sec

/dev/sdc:
 Timing cached reads:   26534 MB in  2.00 seconds = 13282.15 MB/sec
 Timing buffered disk reads: 118 MB in  3.04 seconds =  38.82 MB/sec


USB 3.0

 /dev/sdc:
 Timing cached reads:   29370 MB in  2.00 seconds = 14703.78 MB/sec
 Timing buffered disk reads: 448 MB in  3.01 seconds = 148.63 MB/sec

/dev/sdc:
 Timing cached reads:   29162 MB in  2.00 seconds = 14599.85 MB/sec
 Timing buffered disk reads: 448 MB in  3.02 seconds = 148.40 MB/sec

/dev/sdc:
 Timing cached reads:   29672 MB in  2.00 seconds = 14855.88 MB/sec
 Timing buffered disk reads: 448 MB in  3.02 seconds = 148.44 MB/sec

Linux: Comprovar velocitat de transferència del disc dur

Tan senzill com fer:

root@debian:~# for i in 1 2 3; do hdparm -tT /dev/sda; done

canviant sda per la unitat que vulguem

Amb aquest bucle de 3 repeticions podrem fer-nos la idea de la velocitat del nostre disc dur.

Linux: Identificació de disc dur i informació

Tan senzill com (apt-get install hdparm):

root@debian:/home/buga# hdparm -i /dev/sda

(ha d'ésser executat amb privilegis de root)

Exemple de output:

/dev/sda:

 Model=TOSHIBA THNSNH128GBST, FwRev=HTRAN101, SerialNo=33BS105ZTE4Y
 Config={ Fixed }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
 BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=250069680
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio3 pio4 
 DMA modes:  mdma0 mdma1 mdma2 
 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 
 AdvancedPM=yes: unknown setting WriteCache=enabled
 Drive conforms to: Unspecified:  ATA/ATAPI-3,4,5,6,7
                                                                                                                                                                       

 * signifies the current active mode