1) By using collocation concept we can send single (or) multiple nodes data to single tape (or) minimum no. of tapes.
2) In collocation we have three types: they are :
a) Collocation by group.
b) Collocation by node.
c) Collocation by filespace.
3) COLLOCATION BY GROUP:
a) By collocation by group mechanism we can send (or) migrate group of nodes data to minimum no. of tapes.
b) To implement collocation we need to define collocation group in the TSM Server by using below command.
Define collocgroup collocgroupname
c) Once we defined collocation group then we need to define collocation member and add the nodes to the collocation member parameter. Use the below command;
Define collocmember collocgroupname members
d) We should also add the node name as the member of collocation member in we are defining collocation.
e) Once we are done with defining collocation group and collocation member then we need to update the node definition in each and every node which are the part of collocation by group name by collocation group name by using below command.
Update node nodename group=collocgroupname
If we are registering a new node then follow the below command.
Reg node nodename nodepassword domain=domainname userid=none group=collocgroupname
f) We need to update collocation group name in each and every node which is a part of the collocation. This mechanism is called as “collocation enabling”.
g) The main advantage of collocation is restoration process will be very faster as the group of node data will be stored in single (or) minimum no. of tapes (or) volumes. As and when a restoration request comes it requires less no. of tapes (or) volumes to be mounted.
h) The main dis-advantage of collocation is it requires maximum no. of scratch tapes (or) volumes because TSM always tries to keep each node data in separate tapes and it also requires more no. of tape mounts while taking backup or running migration process and as a result it takes much time for the process.
2) In collocation we have three types: they are :
a) Collocation by group.
b) Collocation by node.
c) Collocation by filespace.
3) COLLOCATION BY GROUP:
a) By collocation by group mechanism we can send (or) migrate group of nodes data to minimum no. of tapes.
b) To implement collocation we need to define collocation group in the TSM Server by using below command.
Define collocgroup collocgroupname
c) Once we defined collocation group then we need to define collocation member and add the nodes to the collocation member parameter. Use the below command;
Define collocmember collocgroupname members
d) We should also add the node name as the member of collocation member in we are defining collocation.
e) Once we are done with defining collocation group and collocation member then we need to update the node definition in each and every node which are the part of collocation by group name by collocation group name by using below command.
Update node nodename group=collocgroupname
If we are registering a new node then follow the below command.
Reg node nodename nodepassword domain=domainname userid=none group=collocgroupname
f) We need to update collocation group name in each and every node which is a part of the collocation. This mechanism is called as “collocation enabling”.
g) The main advantage of collocation is restoration process will be very faster as the group of node data will be stored in single (or) minimum no. of tapes (or) volumes. As and when a restoration request comes it requires less no. of tapes (or) volumes to be mounted.
h) The main dis-advantage of collocation is it requires maximum no. of scratch tapes (or) volumes because TSM always tries to keep each node data in separate tapes and it also requires more no. of tape mounts while taking backup or running migration process and as a result it takes much time for the process.