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The Physical View |
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The Physical View displays the physical network of SSA disks connected to this adapter. Any other SSA adapters connected within the same SSA network(s) are also shown. Cluster Mode Only
The resources are presented in the same order as they are
viewed by this adapter. Each disk has a value known as a hop count.
This value is used by the SSA adapters to communicate with each disk
in the SSA network.
IBM SSA Adapters have two networks, or loops A and
B. Each network has two ports. The four ports, A1, A2, B1 and B2 and the hop
count from one of these ports dictates the position of a disk on the SSA
loop. The ports that are connected are shown on the adapter image.
Some SRN numbers contain the PAA address of a disk, where P is the port
number, and AA is the hop count, or address. See
the notes above the SRN table for more information.
The Physical view depicts the network connections from port
A1 to A2 and from B1 to B2. Each entry either describes an adapter, or a disk.
If there is a break in the SSA network, the Physical View will show a
red table row containing the word break. You should resolve this as
soon as possible. If you are using a PC server, go to the
Event Logger and
Analyse the log to find the problem. In building the Physical View, RSM has to gather a large amount of
information from the adapter, disks, and any SES aware enclosures found in the
SSA network(s). If the using system is under heavy load, or the SSA network is
busy, it make take some time to load. Disk Resource Attributes:
Disk icon: The
colour indicates the current usage of
the disk. Note purple means the disk is a member of an array Serial Number: The unique identifier of
the disk. Status: The disk status, see the
status list for a list of valid states.
Size: The capacity of the disk, in gigabytes
PFA Predictive Failure Analysis (PFA)
All IBM SSA drives have a built in predictive failure mechanism.
The allows the drive to predict failures, some time before they occur. If a
disk has logged a PFA event, this column will contain the
PFA Icon. Contact your service representative
if this occurs.
Note:
Note:
Adapter Resource Attributes:
Adapter Icon: This icon depicts the position
of other SSA adapter(s) in the SSA network.
Cluster Mode Only.
Serial Number: The unique identifier of this adapter.
Service Mode
You can Set Service Mode on a disk by selecting the disk serial number from the Physical View. On the Disk View select the action Set Service Mode. This effectively removes the disk from the SSA network, the network is now running as two strings, one from each port. The open loop events which are normally logged when this happens are not logged while a disk is in Service Mode.
Set Service Mode can be used when you need to remove a disk from the network. This may need to be done when a problem has been found, as a result of Event Log Analysis 2. Service Mode must be set when disks have to be moved. The action physically stops the disk motor.
Service Mode can be reset by selecting the Reset Service Mode button in the actions area of the Physical View.
Notes:
You can only Set Service Mode when you
have reached the relevant Disk View through the
Physical View. Select the disk serial number to view the required
Disk View. That is, you cannot Set Service Mode when you have reached
the relevant Disk View through the Logical or Enclosure Views. Only 'System (AIX)' (On a PC Server), 'System (PC)' (On AIX Systems), 'Free', or 'Rejected' disk resources can be put in Service Mode. Fast Write resources cannot
be put in Service Mode no matter what their current usage. When a disk is set to Service Mode, the Physical View will show
a red table row containing with a message telling you the disk is in Service
Mode.
1.
2.
3.
4.
Actions:
Select any of the disk serial numbers to display the relevant
Disk View All Resource Icons display concise details relating to
the resource when selected. JavaScript Popup. This action updates the current page. This action will reset any Service Mode settings.
Serial Number
Resource Icons
Refresh
Reset Service Mode
Related Information