IBM Marine Radio DS4700 Manuale Utente
having all the right or all the left power cables plug into the same power circuit
enables the DS4000 devices in the configuration to power on simultaneously
during an unattended restoration of power.
enables the DS4000 devices in the configuration to power on simultaneously
during an unattended restoration of power.
Note: Do not overload the circuits that power your storage subsystem and
storage expansion enclosures. Use additional pairs of ac power
distribution units (PDUs) if necessary. Refer to Table 17 on page 26 for
information on storage subsystem power requirements. Contact your IBM
service representative for additional information if needed.
distribution units (PDUs) if necessary. Refer to Table 17 on page 26 for
information on storage subsystem power requirements. Contact your IBM
service representative for additional information if needed.
v
Before any planned system shutdown or after any system additions, removals, or
modifications (including firmware updates, logical drive creations, storage
partitioning definitions, hardware changes, and so on), complete the following
tasks:
modifications (including firmware updates, logical drive creations, storage
partitioning definitions, hardware changes, and so on), complete the following
tasks:
1. Save the storage subsystem profile
2. Save the storage subsystem configuration
Make sure that you save the files in a location other than in the logical drives that
were created for the storage subsystem.
were created for the storage subsystem.
For more information on how to complete these tasks, check the DS4000
Storage Manager online help or the Storage Manager guide for your operating
system.
Storage Manager online help or the Storage Manager guide for your operating
system.
v
During any maintenance or attended power-up procedure, carefully follow the
power-up sequence listed in “Powering on the storage subsystem” on page 119.
Check that each component of the subsystem is powered-on in the proper order
during this entire power-up procedure to ensure the controller will be able to
optimally access all of your storage subsystems.
power-up sequence listed in “Powering on the storage subsystem” on page 119.
Check that each component of the subsystem is powered-on in the proper order
during this entire power-up procedure to ensure the controller will be able to
optimally access all of your storage subsystems.
v
The storage subsystem supports simultaneous power-up to the system
components; however, you should always follow the power-up sequence listed in
“Powering on the storage subsystem” on page 119 during any attended power-up
procedure.
components; however, you should always follow the power-up sequence listed in
“Powering on the storage subsystem” on page 119 during any attended power-up
procedure.
v
A storage system in an optimal state should recover automatically from an
unexpected shutdown and unattended simultaneous restoration of power to
system components. After power is restored, call IBM support if any of the
following conditions occur:
unexpected shutdown and unattended simultaneous restoration of power to
system components. After power is restored, call IBM support if any of the
following conditions occur:
– The storage subsystem logical drives and subsystems are not displayed in the
DS4000 Storage Manager graphical user interface (GUI).
– The storage subsystem logical drives and subsystems do not come online.
– The storage subsystem logical drives and subsystems seem to be degraded.
Storage subsystem components
The storage subsystem has the following removable components. These
components, called customer replaceable units (CRUs), are accessible from the
front or back of the storage subsystem.
components, called customer replaceable units (CRUs), are accessible from the
front or back of the storage subsystem.
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Up to sixteen 2 or 4 Gbps fibre channel or SATA Enhanced Disk Drive Modules
(E-DDMs)
(E-DDMs)
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Two RAID controllers
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Two ac power supply and fan units (Models 70A, 70H, 72A, and 72H)
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Two dc power supply and fan units (Models 70S, 70T, 72S, and 72T)
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Two battery units
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SFP modules
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Bezel
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IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide