Quantum TRB730S
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The Quantum Trailblazer 730S was shipped as an Apple OEM hard disk, with a formatted usable capacity of 699MB
# sg_inq /dev/sdd standard INQUIRY: PQual=0 Device_type=0 RMB=0 LU_CONG=0 version=0x02 [SCSI-2] [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=1 SCCS=0 ACC=0 TPGS=0 3PC=0 Protect=0 [BQue=0] EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0 [RelAdr=0] WBus16=0 Sync=1 [Linked=1] [TranDis=0] CmdQue=0 length=54 (0x36) Peripheral device type: disk Vendor identification: QUANTUM Product identification: TRB730S Product revision level: 043C root@p3:~# dd if=/dev/sdd of=Apple_Quantum_TRB730S.img iflag=direct bs=1M status=progress 732954624 bytes (733 MB, 699 MiB) copied, 237.364 s, 3.1 MB/s 699+1 records in 699+1 records out 733061120 bytes (733 MB, 699 MiB) copied, 237.412 s, 3.1 MB/s
Performance characteristics
# dd if=/dev/sdd of=Apple_Quantum_TRB730S.img iflag=direct bs=1M status=progress 732954624 bytes (733 MB, 699 MiB) copied, 237.364 s, 3.1 MB/s 699+1 records in 699+1 records out 733061120 bytes (733 MB, 699 MiB) copied, 237.412 s, 3.1 MB/s # dd if=/dev/sdd of=fdasfasd iflag=direct bs=512k status=progress count=5000 32505856 bytes (33 MB, 31 MiB) copied, 9.07235 s, 3.6 MB/s 69+0 records in 68+0 records out 35651584 bytes (36 MB, 34 MiB) copied, 10.0855 s, 3.5 MB/s # dd if=/dev/sdd of=fdasfasd iflag=direct bs=256k status=progress count=5000 7340032 bytes (7.3 MB, 7.0 MiB) copied, 2.05697 s, 3.6 MB/s 40+0 records in 39+0 records out 10223616 bytes (10 MB, 9.8 MiB) copied, 2.93713 s, 3.5 MB/s # dd if=/dev/sdd of=fdasfasd iflag=direct bs=128k status=progress count=5000 14417920 bytes (14 MB, 14 MiB) copied, 4.02926 s, 3.6 MB/s 112+0 records in 111+0 records out 14548992 bytes (15 MB, 14 MiB) copied, 4.09741 s, 3.6 MB/s # dd if=/dev/sdd of=fdasfasd iflag=direct bs=64k status=progress count=5000 10747904 bytes (11 MB, 10 MiB) copied, 3.0168 s, 3.6 MB/s 215+0 records in 214+0 records out 14024704 bytes (14 MB, 13 MiB) copied, 3.9432 s, 3.6 MB/s # dd if=/dev/sdd of=fdasfasd iflag=direct bs=32k status=progress count=5000 17956864 bytes (18 MB, 17 MiB) copied, 5.00572 s, 3.6 MB/s 592+0 records in 591+0 records out 19365888 bytes (19 MB, 18 MiB) copied, 5.4119 s, 3.6 MB/s # dd if=/dev/sdd of=fdasfasd iflag=direct bs=16k status=progress count=5000 17907712 bytes (18 MB, 17 MiB) copied, 5.00046 s, 3.6 MB/s 1136+0 records in 1135+0 records out 18595840 bytes (19 MB, 18 MiB) copied, 5.20253 s, 3.6 MB/s # dd if=/dev/sdd of=fdasfasd iflag=direct bs=8k status=progress count=5000 9461760 bytes (9.5 MB, 9.0 MiB) copied, 3.00182 s, 3.2 MB/s 1323+0 records in 1322+0 records out 10829824 bytes (11 MB, 10 MiB) copied, 3.45521 s, 3.1 MB/s # dd if=/dev/sdd of=fdasfasd iflag=direct bs=4k status=progress count=5000 15458304 bytes (15 MB, 15 MiB) copied, 6.00086 s, 2.6 MB/s 4049+0 records in 4048+0 records out 16580608 bytes (17 MB, 16 MiB) copied, 6.43863 s, 2.6 MB/s # dd if=/dev/sdd of=fdasfasd iflag=direct bs=1k status=progress count=5000 3733504 bytes (3.7 MB, 3.6 MiB) copied, 4.00003 s, 933 kB/s 3689+0 records in 3688+0 records out 3776512 bytes (3.8 MB, 3.6 MiB) copied, 4.05073 s, 932 kB/s # dd if=/dev/sdd of=fdasfasd iflag=direct bs=512 status=progress count=5000 1897472 bytes (1.9 MB, 1.8 MiB) copied, 4.00043 s, 474 kB/s 3830+0 records in 3829+0 records out 1960448 bytes (2.0 MB, 1.9 MiB) copied, 4.13589 s, 474 kB/s