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To define an object storage
group you specify the following attributes:
- Description
- This is an optional description
of the object storage group. It
can be up to 120 characters.
- Qualifier
- This identifies a DB2® database on DASD that contains
table spaces, one of which contains the object directory for this
object storage hierarchy. The qualifier attribute also points to the DB2 object storage tables on DASD
that have been defined for the object storage hierarchy. You can
use one-to-eight alphanumeric characters as qualifiers.
This qualifier
must be defined as a package in the CBRPBIND job to create the necessary DB2 package for the application
plans.
- Cycle Start Time
- This identifies the beginning
of a window of time. Use this field in association with Cycle End
Time to specify a specific window of time in which object processing
can be started for this storage group. Specify a value from 0 to 23,
or NONE. A value from 0 to 23 represents an hour of the day.
For
example, specify 00 for midnight; 01 for 1 a.m.; or 23 for 11 p.m.
Specify
NONE if you do not want automatic processing for the storage group.
The
value for Cycle Start Time must be different from the value for Cycle
End Time. When you specify NONE, the value for Cycle End Time must
be blank.
Recommendation: If you
are running in an OAMplex and specify a cycle start time, specify
an OSMC processing system name. Otherwise, object processing for that
object storage group will start on all systems in the OAMplex at cycle
start time.
- Cycle End Time
- Identifies
the end of a window of time when object processing can be started
for this storage group.
The function of the cycle end time depends
on which cycle window mode is in effect when OAM initializes. The
cycle window mode can be specified by using the CYCLEWINDOW keyword
for the SETOSMC statement in the CBROAMxx parmlib
member (refer to z/OS DFSMS OAM Planning, Installation, and Storage Administration Guide for Object Support).
In Start Only mode, the cycle end time identifies the end of a window
of time when object processing can be started for this storage group.
In Start Stop mode, when the cycle end time has been reached, processing
is the same as if a STOP command had been issued for that storage
group. No new work will be scheduled, all work in progress is allowed
to complete.
Specify a value from 0 to 23, or blank. A value
from 0 to 23 represents an hour of the day, and is required when a
value from 0 to 23 was specified for Cycle Start Time.
For
example, specify an hour of the day as 00 for midnight; 01 for 1 a.m.;
or 23 for 11 p.m.
The value for Cycle End Time must be different
from the value for Cycle Start Time. Leave the field blank if you
specified NONE for Cycle Start Time.
- OSMC
Processing System
- Specifies
an OSMC
processing system name. This is the one that identifies which OAM
system in the sysplex performs OSMC processing for this object storage
group. This prevents multiple systems from trying to process the same
storage group at the same time, especially when the Cycle Start Time
is used for automatically starting storage group processing.
- Library Names
- You
can specify either one-to-eight
real library names that represent optical libraries, or one-to-eight
pseudo library names. The libraries you specify are used to process
write requests to the storage group. Names must be valid real or pseudo
optical library names that are defined in the SCDS.
- Volume Full Threshold
- This is the number
of free KB that triggers volume full processing for an optical volume
within the object storage group. When the number of free KB falls
below the threshold, the object access method marks the optical volume
as being full. If the threshold is reached while OAM is writing an
object, it continues writing that object until finished. OAM then
writes no more objects to that volume. Valid values are from 0 to
9999.
- Drive Start Threshold
- This is the maximum
number of object write requests that are outstanding for an optical
drive in this storage group. When the number of object write requests
to this storage group, divided by the number of optical drives currently
processing write requests for this storage group, exceeds this threshold,
the object access method attempts to start an additional optical drive.
Valid values are from 0 to 9999.
This field is optional. If no
value is specified, the default is 17.
- Volume
Full at Write Error
- This
field indicates
when to mark as "full" optical or tape volumes within this object
storage group. If Y, the object access method marks an optical or
tape volume full the first time an attempt to write an object on the
volume fails because not enough space remains on the volume. If N,
OAM marks a volume full only when the number of available KB in the
user data area falls below the Volume Full Threshold for optical or
the TAPEFULL THRESHOLD for tape. An optical volume is also marked
full if the optical volume table of contents area is full, regardless
of how many KB are remaining in the user data area.
- DEFINE SMS Storage Group Status
- Indicates
whether you want to change the storage group status. The values are:
- Y
- Change the status. When you complete
the current panel, you will
see the SMS Storage Group Status Define panel. For more information,
see Defining object or object backup storage group status. If you are defining a storage
group, Y is the default value.
- N
- Do
not change the status. If you are altering a storage group,
N is the default value.
You must define
object storage group system
statuses on the SMS Storage Group Status Define panel before the object
storage group definition can be saved. After you define the status
of the systems, issue the END command to save the defined object backup
storage group and return to the Storage Group Application Selection
panel.
- OAM Deletion Protection
- This
field specifies the deletion-protection mode for all objects in this
object storage group. When deletion-protection is enabled, objects
in this object storage group cannot be deleted prior to their expiration
date. Deletion-protection does not restrict any changes to an object's
expiration date.
You must have also specified DP=P in the IEFSSNxx
PARMLIB member. This field is ignored when no value is specified
for DP in PARMLIB member IEFSSNxx, and when DP=A or DP=N is specified.
- OAM Retention Protection
- This
field indicates whether new objects stored into an object storage
group are flagged as retention-protected for the entire life of the
objects. A retention-protected object cannot be deleted prior to
its expiration date, and its expiration date can never move to an
earlier date.
OAM Retention Protection is used by OAM to set the
retention-protection mode for an object at the time that the object
is stored. If OAM Retention Protection is enabled at the time that
the object is stored, then the object is in retention-protection mode
for the life of the object. Setting OAM Retention Protection to disabled
affects the retention-protection mode of subsequent objects stored
into this object storage group, but does not impact the retention-protection
mode of objects that were previously stored
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