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Status Not under consideration
Workspace IBM i
Categories PowerHA
Created by Guest
Created on May 29, 2019

RELATED IDEAS

To ADD(CHG)SVCCPYD command, provide the capability to enter more than 128 entries in VRTDSKRNG parameter.

The VRTDSKRNG parameter of ADDSVCCPYD/CHGSVCCPYD commands allows entering up to 128 volumes ranges.
The RFE is to increase this maximum value or provide a way (for instance through a user space as for SAVLIB command and LIB parameter) to specify more than 128 volumes ranges.


Use Case:

The command applies when creating or updating SVC copy descriptions in a PowerHA for i cluster. The VRTDSKRNG parameter receives the volumes ids as set by the SVC Disk Storage System the IBM i node is connected to. Those volumes ids are controlled by the SVC, and depending on the active configuration, volumes ids might receive or not continuous values. With the increasing capacities of IBM i nodes, it will happen that such a node has more than 128 volumes with ids which are not continuous and for which ranges are only for 1 volume. In our recent case, here is the list of the volumes ids that the SVC provides:
1035
1039
1043
1047
1051
1055
1059
1063
1067
1071
1075
1079
1083
1087
1091
1095
1099
1103
1107
1111
1115
1119
1123
1127
1131
1135
1139
1143
1147
1151
1155
1159
1163
1167
1171
1175
1179
1183
1187
1191
1195
1199
1203
1207
1211
1215
1219
1223
1227
1231
1235
3739
3743
3747
3751
3755
3759
3763
3767
3771
3775
3779
3783
3787
3791
3795
3799
3803
3807
3811
3815
3819
3823
3827
3831
3835
3839
3843
3847
3851
3855
3859
3863
3867
3871
3875
3879
3883
3887
3891
3895
3899
3903
3907
3911
3915
3919
3923
3927
3931
3935
3939
3943
3947
3951
3955
3959
3963
3967
3971
3975
3979
3983
3987


Idea priority Medium
  • Guest
    Reply
    |     Jun 27, 2019

    The PowerHA team does not intend to provide a solution to this request at this time, so it is being closed. We recommend following best practices when configuring the storage device which results in contiguous ranges for volumes from the storage device; this allows for entering multiple volumes in a single volume range entry by specifying different start and end volume numbers for the volume range.

    For example, the following command specifies 100 volumes in just two volume range entries:
    ADDSVCCPYD .... VRTDSKRNG((100 150 *ALL) (201 251 *ALL))

  • Guest
    Reply
    |     Jun 17, 2019

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - Power Systems
    Product - IBM i
    Component - PowerHA
    Operating system - IBM i
    Source - Client

    For recording keeping, the previous attributes were:
    Brand - Servers and Systems Software
    Product family - Power Systems
    Product - PowerHA
    Component - PowerHA for i
    Operating system - IBM i
    Source - Client

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