HP/HPE Hard Drive Inventory Record (Type 242)

Source: dmidecode, dmioem.c. No dumps of the data corpus hold the structure.

Describes an NVMe or SATA drive attached to the system directly, which the firmware has found at boot. Drives behind a storage controller, e.g. a Smart Array one, and the ones plugged in later are not described. The structure is decoded from Gen10 onwards, and the shortest structures end after the firmware revision, at 0x2A.

Table 1. HP/HPE Hard Drive Inventory Record structure
Offset Version Name Length Value Description

0x00

2.0+

Type

BYTE

242

HP/HPE Hard Drive Inventory Record indicator

0x01

2.0+

Length

BYTE

Varies

Length of the structure

0x02

2.0+

Handle

WORD

Varies

0x04

2.0+

Device Correlation Handle

WORD

HANDLE

Handle of the device correlation record (type 203)

0x06

2.0+

Drive Type

BYTE

ENUM

0: undetermined, 1: NVMe SSD, 2: SATA, 3: SAS, 4: SATA SSD, 5: NVMe managed by VROC/VMD

0x07

2.0+

Unique ID

QWORD

NUMBER

WWID of SATA drives, IEEE extended unique identifier of NVMe ones

0x0F

2.0+

Capacity

DWORD

NUMBER

Capacity in megabytes

0x13

2.0+

Power-On Hours

16 BYTEs

NUMBER

0x23

2.0+

Reserved

BYTE

Varies

0x24

2.0+

Power

BYTE

NUMBER

Power in watts, zero if unknown

0x25

2.0+

Form Factor

BYTE

ENUM

See below

0x26

2.0+

Health

BYTE

ENUM

0: OK, 1: warning, 2: critical, 0xFF: unknown

0x27

2.0+

Serial Number

BYTE

STRING

0x28

2.0+

Model Number

BYTE

STRING

0x29

2.0+

Firmware Revision

BYTE

STRING

0x2A

2.0+

Location

BYTE

STRING

0x2B

2.0+

Encryption Status

BYTE

ENUM

0: not encrypted, 1: encrypted, 2: unknown, 3: not supported

0x2C

2.0+

Capacity

QWORD

NUMBER

Capacity in bytes

0x34

2.0+

Block Size

DWORD

NUMBER

Size of a logical block in bytes

0x38

2.0+

Rotational Speed

WORD

NUMBER

Nominal speed in RPM, 0 if not reported, 1 for solid state drives

0x3A

2.0+

Negotiated Speed

WORD

NUMBER

Negotiated speed of the bus in Gbit/s, zero if unknown

0x3C

2.0+

Capable Speed

WORD

NUMBER

Fastest speed of the bus the drive is capable of in Gbit/s, zero if unknown
Table 2. Form factor
Value Meaning

0x02

3.5-inch

0x03

2.5-inch

0x04

1.8-inch

0x05

Smaller than 1.8-inch

0x06

mSATA

0x07

M.2

0x08

MicroSSD

0x09

CFast

0x20

EDSFF of unknown form factor

0x21

EDSFF 1U short

0x22

EDSFF 1U long

0x23

EDSFF E3 short

0x24

EDSFF E3 long