IBM 5695-DF1 ユーザーズマニュアル
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Storage Management with DB2 for OS/390
Table 19. SMS Storage Classes for Recovery Data Sets
7.1.3 SMS Management Class
DB2 administrators may require several Management Classes for DB2 recovery
data sets. These Management Classes have different expiration and backup
requirements. Table 20 on page 65 shows five examples of Management Classes
for the DB2 recovery data sets. These are:
data sets. These Management Classes have different expiration and backup
requirements. Table 20 on page 65 shows five examples of Management Classes
for the DB2 recovery data sets. These are:
MCDBICD
This Management Class is intended for image copy data sets
created daily. These data sets will expire after four days.
created daily. These data sets will expire after four days.
MCDBICW
This Management Class is intended for image copy data sets
created weekly. These data sets will expire after 25 days.
created weekly. These data sets will expire after 25 days.
MCDBICM
This Management Class is intended for image copy data sets
created monthly and primary copies of the archive logs. These
data sets will expire after 365 days.
created monthly and primary copies of the archive logs. These
data sets will expire after 365 days.
MCDBLV2
This Management Class is intended for secondary archive logs
and secondary image copy data sets. Using this Management
Class, these data sets will be migrated directly to level two.
and secondary image copy data sets. Using this Management
Class, these data sets will be migrated directly to level two.
MCDBACTL
This Management Class is intended for active logs and BSDS
data sets. These data sets do not require SMS management.
data sets. These data sets do not require SMS management.
Attribute
SCDBIC
SCDBICH
SCDBARCH
SCDBACTL
Direct response (MSEC)
10
5
10
5
Direct bias
Sequential response (MSEC)
10
5
10
1
Sequential bias
Sustained data rate (MB/sec)
10
20
20
40
Availability
a
a. Continuous=Duplexed or RAID Disk, Preferred=Array Disk, Standard=Array or Simplex Disk
Standard
Continuous
Continuous
Continuous
Accessibility
b
b. If a device with Concurrent Copy capability is desired, specify Continuous or Continuous Preferred
Standard
Standard
Standard
Standard
Guaranteed space
No
No
No
Yes
Guaranteed synchronous write
No
No
No
No
Cache set name
CF direct weight
CF sequential weight