Chapter 2. Architecture and technical overview
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HMC command to initiate a Remote Restart operation
This removes the requirement of VMControl for the PowerVM Remote Restart function.
Updated web browser support:
– Mozilla Firefox ESR 17 and 24
– Microsoft Internet Explorer 9 - 11
– Google Chrome 31
If you are attaching an HMC to a new server or adding a function to an existing server that
requires a firmware update, the HMC machine code might need to be updated to support the
firmware level of the server. In a dual HMC configuration, both HMCs must be at the same
version and release of the HMC code.
To determine the HMC machine code level that is required for the firmware level on any
server, go to the following website to access the Fix Level Recommendation Tool (FLRT) on
or after the planned availability date for this product:
https://www14.software.ibm.com/webapp/set2/flrt/home
FLRT identifies the correct HMC machine code for the selected system firmware level.
2.11.2 HMC RAID 1 support
HMCs now offer a high availability feature. The new 7042-CR8, by default, includes two HDDs
with RAID 1 configured. RAID 1 is also offered on the 7042-CR6, 7042-CR7, and 7042-CR8
models (if the feature was removed from the initial order) as an MES upgrade option.
RAID 1 uses data mirroring. Two physical drives are combined into an array, and the same
data is written to both drives. This makes the drives mirror images of each other. If one of the
drives experiences a failure, it is taken offline and the HMC continues operating with the other
drive.
HMC models
To use an existing HMC to manage any POWER8 processor-based server, the HMC must be
a model CR5, or later, rack-mounted HMC, or model C08, or later, deskside HMC. The latest
HMC model is the 7042-CR8. For your reference, Table 2-32 lists a comparison between the
7042-CR7 and the 7042-CR8 HMC models.
Table 2-32 Comparison between 7042-CR7 and 7042-CR8 models
Note: Access to firmware and machine code updates is conditional on entitlement and
license validation in accordance with IBM policy and practice. IBM may verify entitlement
through customer number, serial number electronic restrictions, or any other means or
methods that are employed by IBM at its discretion.
Feature
CR7
CR8
IBM System x® model
x3550 M4
x3550 M4
HMC model
7042-CR7
7042-CR8
Processor
Intel Xeon E5
Intel Xeon E5
Memory
4 GB
16 GB
DASD
500 GB
500 GB