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Best performance is achieved when the access characteristics on each disk array have a balanced
workload. This happens when the two controllers have an equal number of disk arrays with active
paths to the disk units.
For additional SAS RAID controller information for the AIX operating system, see SAS RAID
controller for AIX.
For additional SAS RAID controller information for the Linux operating system, see SAS RAID
controller for Linux .
Removing a PCIe storage enclosure
Learn how to remove a PCIe storage enclosure from the system and remove it from the rack.
About this task
Depending on the feature of PCIe storage enclosure that you are working with, you might be able to
remove it from the system with the system powered on and the logical partitions active.
v
If you are removing a 58/88 PCIe storage enclosure, the system must be powered off to complete the
removal.
v
If you are removing any other PCIe storage enclosure, you can remove it either with the system
powered on and the logical partitions active or with the system powered off.
Related tasks
:
“Removing an enclosure from the rack” on page 112
This procedure provides you with general steps to help you physically remove an enclosure that is
mounted in a rack. Because methods for the attachment of enclosures to a rack vary by model, this
procedure provides only conceptual removal steps.
Removing a PCIe storage enclosure with the system powered on
Learn about removing a PCIe storage enclosure from a system with the system powered on.
Before you begin
Important:
To use this procedure to remove a PCIe storage enclosure from the system, the enclosure
must be a model that can be removed with the system powered on. Review the following information to
learn which options you have for removing your enclosure from the system:
v
If you are removing a 58/88 PCIe storage enclosure, you must use “Removing a PCIe storage enclosure
with the system powered off” on page 103 instead of this procedure.
v
If you are removing any other PCIe storage enclosure, you can remove it with the system powered on
by using this procedure.
Prerequisites:
Locate the hardware and hardware components that pertain to this procedure as follows:
v
Identify the PCIe storage enclosure being removed.
v
Identify the system or systems to which the PCIe storage enclosure is connected.
About this task
To remove a PCIe storage enclosure from the system with the system powered on, complete the following
steps:
1.
Record the feature code and serial number of the PCIe storage enclosure that you are removing. The
feature code and serial number appear on the front panel of the PCIe storage enclosure.
2.
Record the current date and time for use later in the procedure when checking for serviceable
events.
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Enclosures and expansion units
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Страница 148: ...Printed in USA ...