|  | IBM sold its HDD manufacturing to Hitachi, who continued to use the Travelstar name for notebook drives.
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IBM/Hitachi harddisk naming scheme
Hitachi harddisk names (on modern drives) are a set of letters and numbers that in fact tell a lot about the specifications of the drive. The designation follows the pattern:
| H | T | S | 72 | 60 | 60 | M | 9 | AT | 00 | 
| H | [t] | [T] | [rr] | [SS] | [ss] | [g] | [h] | [ii] | [??] | 
- the H is for Hitachi
- [t] is a single letter designating the drive type, like
- T = Travelstar
- D = Deskstar
- E = Endurastar
 
- [T] - S for Standard (vs A for Auto for example) - I don't know what this mean :)
- [rr] is the first two digits of speed in RPM, i.e. 54 for 5400 RPM.
- [SS] maximum disk size in model line.
- [ss] is two digits giving the size in GB. 100gig drives have a 10 here.
- [g] generation code
- [h] is the drives height in full millimeters, first digit, i.e. 9 for 9.5mm or some code for desktop: i.e. L - 1-inch form-factor.
- [ii] is a two digit code for the drives interface, like this:
- AT = IDE/ATA
- SA = IDE/SATA
- CE = IDE/ZIF
- CF = Compact Flash
- L3 = SCSI/Ultra320
- LF = FC-AL
 
- two numerical digits are following, might be some kind of revision, might be something else. Upd: for DeskStar 1st is buffer size (2 - 2MB 8 - 8MB) and 2nd is reserved.
Available drives from IBM or Lenovo
| 2.5" 9.5mm SATA | 
| Capacity | RPM | PartNr. | FRU | Manufacturer | Model | ThinkPad Models | 
| 40GB | 5400 |  | 39T2621 | Hitachi |  |  | 
| 40GB | 5400 |  | 39T2629 | Toshiba |  |  | 
| 40GB | 5400 |  | 39T2637 | Fujitsu |  |  | 
| 60GB | 5400 | 40Y8723 | 39T2623 | Hitachi |  |  | 
| 60GB | 5400 | 40Y8723 | 39T2631 | Toshiba |  |  | 
| 60GB | 5400 |  | 39T2639 | Fujitsu | MHV2060B | R60e | 
| 60GB | 5400 |  | 39T2703 | Hitachi | HTS541060G9SA00 | R60e | 
| 80GB | 5400 |  | 39T2625 | Hitachi |  |  | 
| 80GB | 5400 |  | 39T2633 | Toshiba |  |  | 
| 80GB | 5400 |  | 39T2641 | Fujitsu |  |  | 
| 100GB | 5400 | 40Y8721 | 39T2627 | Hitachi |  |  | 
| 100GB | 5400 | 40Y8721 | 39T2635 | Toshiba |  |  | 
| 100GB | 5400 |  | 39T2643 | Fujitsu |  |  | 
| 60GB | 7200 | 41N3012 | 39T2645 |  |  |  | 
| 100GB | 7200 | 41N3013 | 39T2649 | Hitachi |  |  | 
| 100GB | 7200 | 42T1021 | 42T1403 | Hitachi | HTS721010G9SA00 | T60 | 
| 100GB | 7200 |  | 27R2345 | Hitachi |  |  | 
| 100GB | 7200 |  | 27R2346 | Seagate |  |  | 
| 120GB | 5400 |  |  | Seagate | ST9120822AS | X61s | 2.5" 9.5mm PATA | 
| Capacity | RPM | PartNr. | FRU | Manufacturer | Model | ThinkPad Models | 
| 6GB | 4200 | 05K9237 | 05K9227 | SSD |  |  | 
| 6GB | 4200 | 05K9237 | 05K9228 | Hitachi |  |  | 
| 10GB | 4200 | 08K9510 | 08K9508 | SSD |  |  | 
| 10GB | 4200 | 08K9510 | 08K9531 | Hitachi |  |  | 
| 12GB | 4200 | 05K9238 | 05K9229 | SSD |  |  | 
| 12GB | 4200 | 05K9238 | 05K9230 | Hitachi |  |  | 
| 15GB | 4200 | 08K9588 | 08K9587 | Hitachi |  |  | 
| 15GB | 4200 | 08K9588 | 08K9585 | STD |  |  | 
| 20GB | 4200 |  | 08K9533 | Hitachi |  |  | 
| 20GB |  |  | 92P6375 | Hitachi |  |  | 
| 20GB | 4200 | 27L3439 | 27L3441, 08K9548 |  |  |  | 
| 20GB |  |  | 27L3427 | SSD |  |  | 
| 20GB |  |  | 27L4075 | SSD |  |  | 
| 20GB | 4200 | 08K9686 | 27L4286 | STD |  |  | 
| 20GB | 4200 | 08K9686 | 27L4385 | Fujitsu |  |  | 
| 20GB | 4200 | 08K9686 | 92P6327 | STD |  |  | 
| 20GB | 4200 |  | 92P6019 | Fujitsu | MHS2020AT | G40, G41 | 
| 20GB | 4200 |  | 92P6094 | Fujitsu | MHT2020AT | G40, G41 | 
| 20GB | 4200 |  | 92P6017 | Hitachi | DK23EA-20 | G40, G41 | 
| 20GB | 4200 |  | 92P6086 | Hitachi | IC25N020ATMR04 | G40, G41 | 
| 30GB |  | 08K9593 | 08K9590 |  |  |  | 
| 30GB |  | 08K9593 | 08K9592 | Hitachi |  |  | 
| 30GB |  |  | 08K9660 | Hitachi |  |  | 
| 30GB |  |  | 08K9656 | Diabo |  |  | 
| 30GB |  |  | 08K9564 | SSD |  |  | 
| 30GB |  |  | 27L4291 |  |  |  | 
| 30GB |  |  | 92P6330 | STD |  |  | 
| 30GB | 4200 |  | 92P6088 | Hitachi | IC25N030ATMR04 | G40, G41 | 
| 30GB | 4200 |  | 92P6096 | Fujitsu | MHT2030AT | G40, G41 | 
| 40GB | 4200 |  | 08K9683 | STD |  |  | 
| 40GB | 4200 |  | 08K9767 | Hitachi |  |  | 
| 40GB | 4200 |  | 92P6023 | Fujitsu | MHS2040T | G40, G41 | 
| 40GB | 4200 |  | 92P6098 | Fujitsu | MHT2040AT | G40, G41 | 
| 40GB | 4200 |  | 92P6021 | Hitachi | DK23EA-40 | G40, G41 | 
| 40GB | 4200 |  | 92P6090 | Hitachi | IC25N040ATMR04 | G40, G41 | 
| 40GB | 4200 |  | 92P6119 | Moraga | B | G40, G41 | 
| 40GB | 4200 |  | 92P6121 | Toshiba | Proteus | G40, G41 | 
| 40GB | 4200 | 08K9832 | 92P6332 | Hitachi | IC25N040ATMR04-0 |  | 
| 40GB | 5400 |  | 08K9758 | Toshiba |  | T30 | 
| 40GB | 5400 |  | 27L4384 | STD |  |  | 
| 40GB | 5400 | 08K9687 | 08K9599 |  |  |  | 
| 40GB | 5400 | 08K9816 | 92P6342 | STD |  |  | 
| 40GB | 5400 | 08K9816 | 13N6801 |  |  |  | 
| 40GB | 5400 | 08K9816 | 08K9834 | Hitachi |  | T30 | 
| 40GB | 5400 | 08K9816 | 92P6545 | Hitachi | HTS548040M9AT00 |  | 
| 60GB | 4200 |  | 08K9833 | Hitachi |  | T30 | 
| 60GB | 4200 |  | 92P6092 | Hitachi | IC25N060ATMR04 | G40, G41 | 
| 60GB | 4200 |  | 92P6122 | Moraga | C | G40, G41 | 
| 60GB | 4200 | 13N6706 | 13N6707 | Hitachi | IC25N060ATMR04-0 | R51 | 
| 60GB | 5400 | 08K9688 | 08K9700 |  |  |  | 
| 60GB | 5400 | 08K9688 | 92P6340 | STD |  |  | 
| 60GB | 5400 | 73P3357 | 13N6893 |  |  |  | 
| 60GB | 5400 |  | 92P6547 | Hitachi | HTS548060M9AT00 |  | 
| 60GB | 7200 |  | 13N6807 | Hitachi | HTS726060M9AT00 (Travelstar 7K60) | T41p, T42p, T43, T43p | 
| 60GB | 7200 |  | 92P6551 | Hitachi | HTS726060M9AT00 (Travelstar 7K60) |  | 
| 60GB | 7200 |  | 08K0889 | Hitachi | HTE726060M9AT00 (Travelstar 7K60) | R50 | 
| 60GB | 7200 | 13N6799 | 13N6807 | Hitachi | HTS726060M9AT00 | T41 | 
| 80GB | 4200 | 08K9869 | 08K9863 |  |  |  | 
| 80GB | 4200 |  | 92P6123 | Moraga | B | G40, G41 | 
| 80GB | 5400 | 13N6798 | 13N6805 | Hitachi | HTS548080M9AT00 | T41p, T42p, T43p | 
| 80GB | 5400 | 09N4273 | 92P6549 | Hitachi | HTS548080M9AT00 |  | 
| 80GB | 7200 |  | 39T2583 | Hitachi |  |  | 
| 100GB | 5400 | 40Y8716 | 39T2555 | Fujitsu |  |  | 
| 100GB | 5400 | 40Y8716 | 39T2559 | Toshiba |  |  | 
| 100GB | 7200 |  | 39T2585 | Hitachi |  |  | 
| 2.5" 12.5mm PATA | 
| Capacity | RPM | PartNr. | FRU | Manufacturer | Model | ThinkPad Models | 
| 18GB | 4200 | 05K9239 | 05K9231 |  |  |  | 
| 32GB | 5400 | 08K9511 | 08K9509 | SSD |  |  | 
| 48GB | 5400 | 08K9600 | 08K9599 |  |  |  | 
| 48GB | 5400 | 08K9600 | 92P6338 | STD |  |  | 
| 1.8" 9.5mm PATA | 
| Capacity | RPM | PartNr. | FRU | Manufacturer | Model | ThinkPad Models | 
| 20GB | 4200 |  | 92P6083 | Hitachi | DK14FA-20 | X40, X41, X41 Tablet | 
| 20GB | 4200 |  | 39T2541 | Hitachi | HTC426020G7AT00 | X40, X41, X41 Tablet | 
| 30GB | 4200 |  | 92P6140 | Hitachi |  | X40, X41, X41 Tablet | 
| 30GB | 4200 |  | 39T2543 | Hitachi |  | X40, X41, X41 Tablet | 
| 30GB | 4200 |  | 39T2747 | Toshiba |  | X60s | 
| 40GB | 4200 |  | 92P6085 | Hitachi | DK13FA-40 | X40, X41, X41 Tablet | 
| 40GB | 4200 |  | 39T2545 | Hitachi |  | X40, X41, X41 Tablet | 
| 40GB | 4200 |  | 39T2749 | Toshiba |  | X60s | 
| 60GB | 4200 | 73P3358 | 39T2547 | Hitachi |  | X40, X41, X41 Tablet | 
| 60GB | 4200 |  | 39T2751 | Toshiba |  | X60s | 
| 2.5" PATA (770 series) | 
| Capacity | RPM | PartNr. | FRU | Manufacturer | Model | ThinkPad Models | 
| 5.1GB |  | 11J8947 | 12J0449 |  |  | 770, 770E, 770ED, 770X, 770Z | 
| 8.1GB |  | 02K0517 | 02K0514 |  |  | 770, 770E, 770ED, 770X, 770Z | 
| 14.1GB |  | 02K0526 | 02K0525 |  |  | 770, 770E, 770ED, 770X, 770Z | 
| 2.5" PATA (380,385,560,570,600 series) | 
| Capacity | RPM | PartNr. | FRU | Manufacturer | Model | ThinkPad Models | 
| 1.08GB |  | 46H4208 |  |  |  |  | 
| 2.1GB |  | 73H9797 |  |  |  |  | 
| 2.1GB |  | 45H8783 |  |  |  |  | 
| 3.2GB |  | 02K0487 |  |  |  |  | 
| 4.0GB |  | 02K0501 |  |  |  |  | 
| 4.0GB |  | 05K8871 |  |  |  |  | 
| 5.1GB |  | 02K0506 |  |  |  |  | 
| 6.0GB |  | 05K9199 |  |  |  |  | 
| 6.4GB |  | 02K0518 |  |  |  |  | 
| 10GB |  | 36L9293 |  |  |  |  | 
| 12GB |  | 05K9200 |  |  |  |  | 
| 18GB |  | 37L2993 |  |  |  |  | 
| 2.5" SCSI-2 (PowerPC ThinkPads) | 
| Capacity | RPM | PartNr. | FRU | Manufacturer | Model | ThinkPad Models | 
| 540MB |  | 30H1388 |  |  |  | 820, 850, 860 | 
| 810MB |  | 30H1392 |  |  |  | 820, 850, 860 | 
| 1.2GB |  | 30H1467 |  |  |  | 820, 850, 860 |