Next, designate your candidate volumes in diskpool=ARCPOOL0 by creating a member in the PARMLIB data set with that name and inserting entries. For an example, examine the lower portion of the previous figure.
Either explicit volumes or volume patterns can be used. However, the total number of volumes in the pool cannot exceed 300. Do not try to continue the volume list on multiple lines (that is, continuation lines are not supported). Instead, enter multiple VOL= statements.
If both the primary and the duplicate copy are being directed to disk, each pool must contain volumes of the same device type(s) as the other pool; that is, if pool 1 has both 3380s and 3350s, pool 2 must also have some 3380s and 3350s. This is required because a volume from pool 1 is selected first, and then pool 2 is searched for a volume of the same device type.
By default, CA Disk automatically separates the copy from the primary; that is, if a volume appears in both pools, CA Disk does not select the same volume for the copy as is used for the primary. Obviously, this is to prevent the loss of both copies if the disk pack is destroyed, whether it is due to oxidation, head crashes, or other reasons. To allow both copies to go to the same volume, specify sysparm ARCSEPC0 with a value of N.
|
Copyright © 2015 CA Technologies.
All rights reserved.
|
|