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Seagate ST32107WC Wide SCA disk performance (Rebadged Conner CFP2107E)

aperezbios
Oct 19th, 2025 (edited)
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  1. $lsscsi
  2. [2:0:0:0] disk ATA Samsung SSD 870 2B6Q /dev/sda
  3. [10:0:4:0] disk CONNER CFP2107E 2.14GB 1524 /dev/sdb
  4. $dmesg | grep -i -e "Direct-Access" -e wide
  5. [ 1.452790] scsi 2:0:0:0: Direct-Access ATA Samsung SSD 870 2B6Q PQ: 0 ANSI: 5
  6. aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs
  7. [ 32.962078] scsi 10:0:4:0: Direct-Access CONNER CFP2107E 2.14GB 1524 PQ: 0 ANSI: 2
  8. [ 32.984086] scsi target10:0:4: wide asynchronous
  9. [ 32.987589] scsi target10:0:4: FAST-10 WIDE SCSI 20.0 MB/s ST (100 ns, offset 8)
  10. [ 35.622845] scsi target10:0:4: FAST-10 WIDE SCSI 20.0 MB/s ST (100 ns, offset 8)
  11. $sg_inq /dev/sdb
  12. standard INQUIRY:
  13. PQual=0 PDT=0 RMB=0 LU_CONG=0 hot_pluggable=0 version=0x02 [SCSI-2]
  14. [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=2
  15. SCCS=0 ACC=0 TPGS=0 3PC=0 Protect=0 [BQue=0]
  16. EncServ=0 MultiP=0 [MChngr=0] [ACKREQQ=0] Addr16=0
  17. [RelAdr=0] WBus16=1 Sync=1 [Linked=0] [TranDis=0] CmdQue=1
  18. length=36 (0x24) Peripheral device type: disk
  19. Vendor identification: CONNER
  20. Product identification: CFP2107E 2.14GB
  21. Product revision level: 1524
  22. $sg_readcap /dev/sdb
  23. Read Capacity results:
  24. Last LBA=4194303 (0x3fffff), Number of logical blocks=4194304
  25. Logical block length=512 bytes
  26. Hence:
  27. Device size: 2147483648 bytes, 2048.0 MiB, 2.15 GB
  28. $dd if=/dev/sdb of=/dev/null bs=1M status=progress iflag=direct
  29. 195035136 bytes (195 MB, 186 MiB) copied, 30 s, 6.5 MB/s^C
  30. 198180864 bytes (198 MB, 189 MiB) copied, 30.7644 s, 6.4 MB/s
  31.  
  32. $dd if=/dev/sdb of=/dev/null bs=512k status=progress iflag=direct
  33. 194510848 bytes (195 MB, 186 MiB) copied, 30 s, 6.5 MB/s^C
  34. 197132288 bytes (197 MB, 188 MiB) copied, 30.5215 s, 6.5 MB/s
  35.  
  36. $dd if=/dev/sdb of=/dev/null bs=256k status=progress iflag=direct
  37. 104071168 bytes (104 MB, 99 MiB) copied, 16 s, 6.5 MB/s^C
  38. 106168320 bytes (106 MB, 101 MiB) copied, 16.4065 s, 6.5 MB/s
  39.  
  40. $dd if=/dev/sdb of=/dev/null bs=128k status=progress iflag=direct
  41. 25952256 bytes (26 MB, 25 MiB) copied, 4 s, 6.5 MB/s^C
  42. 28049408 bytes (28 MB, 27 MiB) copied, 4.34539 s, 6.5 MB/s
  43.  
  44. $dd if=/dev/sdb of=/dev/null bs=256k status=progress iflag=direct
  45. 32505856 bytes (33 MB, 31 MiB) copied, 5 s, 6.5 MB/s^C
  46. 33554432 bytes (34 MB, 32 MiB) copied, 5.21424 s, 6.4 MB/s
  47.  
  48. $dd if=/dev/sdb of=/dev/null bs=128k status=progress iflag=direct
  49. 32505856 bytes (33 MB, 31 MiB) copied, 5 s, 6.5 MB/^C
  50. 38010880 bytes (38 MB, 36 MiB) copied, 5.88537 s, 6.5 MB/s
  51.  
  52. $dd if=/dev/sdb of=/dev/null bs=64k status=progress iflag=direct
  53. 71434240 bytes (71 MB, 68 MiB) copied, 11 s, 6.5 MB/s^C
  54. 77529088 bytes (78 MB, 74 MiB) copied, 11.9532 s, 6.5 MB/s
  55.  
  56. $dd if=/dev/sdb of=/dev/null bs=32k status=progress iflag=direct
  57. 12976128 bytes (13 MB, 12 MiB) copied, 2 s, 6.5 MB/s ^C
  58. 19038208 bytes (19 MB, 18 MiB) copied, 2.94336 s, 6.5 MB/s
  59.  
  60. $dd if=/dev/sdb of=/dev/null bs=16k status=progress iflag=direct
  61. 38961152 bytes (39 MB, 37 MiB) copied, 6 s, 6.5 MB/s^C
  62. 39796736 bytes (40 MB, 38 MiB) copied, 6.13355 s, 6.5 MB/s
  63.  
  64. $dd if=/dev/sdb of=/dev/null bs=8k status=progress iflag=direct
  65. 17350656 bytes (17 MB, 17 MiB) copied, 3 s, 5.8 MB/s^C
  66. 18268160 bytes (18 MB, 17 MiB) copied, 3.16293 s, 5.8 MB/s
  67.  
  68. $dd if=/dev/sdb of=/dev/null bs=4k status=progress iflag=direct
  69. 6877184 bytes (6.9 MB, 6.6 MiB) copied, 2 s, 3.4 MB/s^C
  70. 8257536 bytes (8.3 MB, 7.9 MiB) copied, 2.40252 s, 3.4 MB/s
  71.  
  72. $dd if=/dev/sdb of=/dev/null bs=2k status=progress iflag=direct
  73. 5644288 bytes (5.6 MB, 5.4 MiB) copied, 3 s, 1.9 MB/s^C
  74. 6625280 bytes (6.6 MB, 6.3 MiB) copied, 3.52302 s, 1.9 MB/s
  75.  
  76. $dd if=/dev/sdb of=/dev/null bs=1k status=progress iflag=direct
  77. 3985408 bytes (4.0 MB, 3.8 MiB) copied, 4 s, 996 kB/s^C
  78. 4276224 bytes (4.3 MB, 4.1 MiB) copied, 4.29345 s, 996 kB/s
  79.  
  80. $dd if=/dev/sdb of=/dev/null bs=512 status=progress iflag=direct
  81. 1021440 bytes (1.0 MB, 998 KiB) copied, 2 s, 510 kB/s^C
  82. 1508864 bytes (1.5 MB, 1.4 MiB) copied, 2.96256 s, 509 kB/s
  83.  
  84. $
  85.  
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