List of Toshiba drive revision codes
This is a list of Toshiba drive revision codes. A drive revision is printed on the label of Toshiba 2.5" drives, as well as 3.5" drives based on Hitachi HDAs.
First block
The first block gives information on the drive itself, including its purpose and intended customer.
| Code | Customer/Purpose | Notes (including changes to label) | Example image |
|---|---|---|---|
| AAA | Standard | Exclusive to OEM models (e.g. TOSHIBA DT01ACA100) | |
| ARA | Retail | Exclusive to retail-rebranded models (e.g. TOSHIBA HDWL110). | |
| AAD | Dell | Adds Dell-specific numbering, such as a Dell serial number and DP/N. Adds QR code. Adds interface capacity, spindle speed and firmware version in a box similar to drives produced by Western Digital and Seagate for Dell. |
Second block
The second block indicates production revisions of the drive, including reprints and minor revisions to a production line. This block's meaning varies significantly across drives.
Firmware block
The last block of characters, separated by a forward slash, indicate the firmware revision. Prefixing letters often indicate drive generation and form factor/HDA.
This list will only include prefixes and suffixes for native Toshiba drives (which have firmware versions like "JU000A"). Native Hitachi rebranded drives use Hitachi firmware versioning style and will not be covered here. For those, the last three letters of the firmware will be indicated in the drive revision.
Prefixes
Post-2011
| L1 | L2 | Purpose |
|---|---|---|
| A | M | 2.5" 7 mm slim drives (e.g. TOSHIBA HDWK105) |
| X | 2.5" 9.5 mm drives (e.g. TOSHIBA HDWJ110) | |
| Y | 2.5" 15 mm thick drives (e.g. TOSHIBA MQ01ABB200) | |
| Z | 2.5" 9.5 mm video/surveiilance drives with STB DRM (e.g. TOSHIBA MQ01ABD050VS) | |
| D | S | 2.5" 7 mm slim 2-platter drives (e.g. TOSHIBA MQ01ABF100) |
| J | P | 2.5" 15 mm thick drives (MQ03 CMR) (e.g. TOSHIBA MQ03ABB300) |
| U | 2.5" 7 mm slim SMR drives (e.g. TOSHIBA HDWL110) | |
| T | 2.5" 9.5 mm 2-platter SMR drives (e.g. TOSHIBA MQ01ABD200) | |
| S | 2.5" 15 mm thick SMR drives (e.g. TOSHIBA MQ04ABB400) | |
| K | P | 3.5" Hitachi 1-platter HDA SMR drives (e.g. TOSHIBA HDWT720) |
| Q | 3.5" Hitachi 2 or 3-platter HDA SMR drives (e.g. TOSHIBA HDWD240) |
Suffixes
Suffixes indicate customer, similarly to the first block above.
| Code | Customer/Purpose | Notes (including changes to firmware) |
|---|---|---|
| A | Standard (used on both OEM and retail drives) | |
| C | HP? | Has been observed on HP drives. |
| D | Dell | Does not report attributes 02, 07, 08, C5, C6, DC, DE, DF, E0, or E2. Transfer Error Rate at F0 changed to Head Flying Hours, and F1 Total Host Writes and F2 Total Host Reads reported. All SMART statistics pertaining to missing attributes also removed. |
| R | Surveillance | Observed only on Hitachi HDA surveillance drives. |
| U | Retail/USB | Usually used on USB drives, but has been observed on SATA drives as well, where they might throttle the SATA interface to SATA 2 speeds. |