Device Bay Requirements

Device Bay is not required for servers in this version of this guideline. However, if a Device Bay-compatible bay is implemented in a server, it must comply with the requirements in this section.

Device Bay is one solution to the problem of “surprise removal” of devices, providing a mechanism that combines well-defined notification mechanisms between the hardware and software with a physical interlock mechanism to prevent removal of a device without the corresponding hardware or software notifications. Server vendors should use Device Bay or other mechanisms, such as captive cables or other physical restraint mechanisms, to prevent accidental or surprise removal of devices without notifying the operating system of the operation.

Device Bay controller and devices, if present, meet Device Bay 1.0 and other requirements

Required

If implemented in a server, Device Bay capabilities must meet the following requirements:

• The system includes a Device Bay Controller (DBC) that complies with Device Bay Interface Specification, Version 1.0 or later. If the DBC is implemented as a USB device, it must comply with Universal Serial Bus Device Class Definition Device Bay Controllers, Version 1.0 or later.
  
  
• The system includes one USB port and one IEEE 1394 port for each Device Bay-capable bay in the system.

Any Device Bay peripherals provided with a server must meet the following requirements:

• Device complies with Device Bay Interface Specification, Version 1.0 or later.
  
  
• Device uses either the USB bus, IEEE 1394 bus, or both.
  
  
• If the device uses the USB bus, it must also comply with the relevant USB device class specifications.