Storage Subsystem Firmware Features Overview; Supported Operating Systems - Western Digital Ultrastar Serv60+8 User Manual

User Guide
2.1 Storage Subsystem Firmware Features Overview
The enclosure services functionality is compatible with the SES-3 (SES3r14) standard. The enclosure
implements the Standalone Enclosure Services Process model described in the SES standard. The logical
enclosure services process is called the SEP.
The primary expander in the IOM is the only expander that presents a SCSI target, and it is the main device
for gathering information from the system for presentation to hosts. The SEP services SES control page
operations. All control operations follow a synchronous completion model, i.e. the SEP will send SCSI status
only when the requested operation has completed, or to notify the host that the requested operation
cannot be performed. Typical SES control operations include:
• Requesting LED flash patterns
• Recording predicted or known component failures
• Requesting power cycle of one or more drives
• Perform a code download. All firmware in programmable components in the storage subsystem may be
updated via SES.
SES Status
The SEP services SES status pages. All status operations follow a non-blocking completion model, i.e. the
SEP returns the last known status, rather than blocking the completion of the SCSI operation while doing an
immediate polling operation. The SES status is updated every 0.5s. Typical SES status operations include:
• FRU and drive presence, health information, and entity names
• SAS topology maps
• Report sensor readings: temperatures, fan speeds, voltages, currents, etc.
Autonomous Behavior
The SEP autonomously manages enclosure power and thermal characteristics. This is done dynamically
as needed to stay within the allowed operational envelope of power consumption, thermal heating, and
ambient temperature in the data center. This management can include the use of one or more mitigating
actions:
• Raise and lower the cooling fans.
• Enable or disable activity safeguards which limit enclosure activity to reduce power consumption or
heat generation.
• Enter a self-healing thermal offline state in which some or all enclosure components are powered off.
The enclosure operates visual indicators. These indicators can be set or cleared via host request, or
autonomously by the enclosure if it detects fault conditions. The enclosure provides non-volatile memory
that records enclosure serialization and branding information. The SEP records event log entries to non-
volatile memory.
2.2 Supported Operating Systems
Table 25: Compatible Operating Systems

2.1 Storage Subsystem Firmware Features Overview

OS Support
Microsoft® Windows
2. System Management Overview
2012 R2 x64 Server
2016 R1 x64 Server
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