Role-Based User Accounts; Thermal Logic Management - HP BL685c - ProLiant - 4 GB RAM Management Manual

• Cooling—The OA makes sure there is sufficient cooling capacity for the server blade or
interconnect module.
• Location—If the enclosure is not fully populated, the OA makes sure that server blades, storage
blades, Active Cool fans, and power supplies are in the correct locations to receive the proper
cooling and to support the chosen power configuration. For example, if the administrator is
installing only two server blades, they must be in bays 1, 2, 9, or 10. Similarly, fans must go into
bays 4, 5, 9, and 10.
• Device—The OA indicates device failure or degraded health. Typically the corrective action will be
to replace a failed device.
The configuration logic powers up the interconnect modules first. The server blade is not powered up
until the Onboard Administrator has verified that the configuration is correct. If there is a configuration
issue, the Insight Display indicates what the issue is and possible remedies.

Role-based user accounts

The Onboard Administrator generates user accounts that can be configured to permit access to
information and control of specific device bays. User accounts can be configured to isolate multiple
administrative roles, each with different privilege levels:
• Administrator role can create or edit all user accounts in an enclosure.
• Operator role has full information access and control of permitted bays.
• User role has information access but no control capability.
The Onboard Administrator requires that users log in to the web GUI or CLI with an account and
password. The account can be a local account with the password stored on the Onboard
Administrator. Or the account can be a Lightweight-Directory Access Protocol (LDAP) account, where
the OA contacts the defined LDAP server to check user credentials.
Two-factor authentication provides tight security for the user management session to the OA. Rather
than requiring separate logins to multiple resources (to each enclosure or iLO 2 management
processor), the Onboard Administrator allows single-point access. Thus, the administrator can use a
single sign-on process to log in to the Onboard Administrator. Then the administrator can use the web
GUI to graphically view and manage the HP BladeSystem c-Class components within up to four linked
enclosures. For example, an IT administrator could automatically propagate management
commands—such as changing the enclosure power mode—throughout the linked enclosures.

Thermal Logic management

The Onboard Administrator retrieves thermal information from all of the server blades, power
supplies, Active Cool fans, and interconnect modules in the enclosure. In a c7000 Enclosure filled
with 16 half-height server blades, more than 150 temperature sensors provide data for maintaining
an optimal balance among cooling, acoustic levels, and power consumption. If the thermal load of an
enclosure increases, the Onboard Administrator's Thermal Logic features instruct the Active Cool fan
controllers to increase fan speeds to accommodate the additional demand.
Zone cooling is a Thermal Logic feature that minimizes power for the fan subsystem by varying the
fan speed in up to four zones to match the specific cooling needs of the server blades instead of
simply running all fans at the same speed.
Fan speed can be adjusted to reduce noise and power consumption and to compensate for airflow
differences within the enclosure. The performance of each subsystem is monitored, and any failures or
warnings are reported to the system log and Insight Control (when Simple Network Management
Protocol is enabled). The Onboard Administrator manages subsystem failure by taking appropriate
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