IBM System storage DS6000 Series, Redbooks

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DS6000 Series: Concepts and Architecture
Figure 13-8 Utilize SMS SG and Volume status to direct all new allocation to new volumes
When both the old hardware and the new hardware can be installed and connected to the
host servers, the new volumes are integrated into the existing SGs, SG1 and SG2. Then
change the SMS volume’s status to disable volumes A to F for new allocations. This is
possible through an SMS system command and is propagated to all systems within this
SMS-plex. DISABLE,NEW or D,N implies that all new allocations which are directed to SG1
can no longer happen on volumes A through F but must go to volumes DS1 or DS2. This
allows you to gradually migrate the data from the old devices A to F onto the new and larger
devices DS1 and DS2. This SMS system command has a drawback: It holds only until the
next IPL. Then SMS will read again what the volume and SG status is from the respective
SCDS and reload the ACDS accordingly. To make this change permanent you have to
change the SCDS through the ISMF panels.
We go briefly through the ISMF panel sequence to make the SMS volume status complete
and permanent.
Example 13-6 is the first ISMF Storage Group Application panel where you choose the actual
Source Control Data Set (SCDS), the storage group, XC, and select option 4 to alter the SMS
volume status.
Example 13-6 Select SMS storage group in SCDS
STORAGE GROUP APPLICATION SELECTION
Command ===>
To perform Storage Group Operations, Specify:
CDS Name . . . . . . 'SYS1.DFSMS.SCDS'
(1 to 44 character data set name or 'Active' )
Storage Group Name XC (For Storage Group List, fully or
partially specified or * for all)
Storage Group Type (VIO, POOL, DUMMY, COPY POOL BACKUP,
OBJECT, OBJECT BACKUP, or TAPE)
Select one of the following options :
4 1. List - Generate a list of Storage Groups
2. Define - Define a Storage Group
ESS E20
A C B
SG1
SG2
FICON
RO *ALL,V SMS,VOL(DDDDDD),D,N
RO *ALL,V SMS,VOL(DDDDDD),D,N
V SMS,VOL(KKKKKK),D,N
V SMS,VOL(KKKKKK),D,N
IGD010I VOLUME (KKKKKK,MCECEBC ) STATUS IS NOW DISABLED,NEW
IGD010I VOLUME (KKKKKK,MCECEBC ) STATUS IS NOW DISABLED,NEW
Not drawn to scale
E F D
ESS E20
RO *ALL,V SMS,VOL(AAAAAA),D,N
RO *ALL,V SMS,VOL(AAAAAA),D,N
V SMS,VOL(AAAAAA),D,N
V SMS,VOL(AAAAAA),D,N
IGD010I VOLUME (AAAAAA,MCECEBC ) STATUS IS NOW DISABLED,NEW
IGD010I VOLUME (AAAAAA,MCECEBC ) STATUS IS NOW DISABLED,NEW
DS1
DS2
DS 6000
ESCON
ESCON