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Caution
Description
When specifying
WWN or iSCSI
name of LDEVs
and HBAs:
DKCMAIN
microcode
version and
storage models
For microcode 80-04-xx-xx/00 or earlier in VSP G1000, VSP G1500,
VSP F1500 or firmware 83-03-0x-xx/00 or earlier in VSP Gx00 models
and VSP Fx00 models, if SPM information is set or referenced,
behavior is not guaranteed.
The following errors might occur:
•
Server performance cannot be controlled according to the
specified upper limit value.
•
No detailed error message appears when an error occurs.
•
No error message appears if an invalid upper limit value is set.
•
The same error as when an invalid WWN is specified occurs. For
details about the errors, see the row below.
Behavior when SPM information is set for or referenced by VSP or HUS
VM models cannot be guaranteed. If SPM information is set or
referenced, the following errors might occur:
•
Server performance cannot be controlled according to the
specified upper limit value.
•
No detailed error message appears when an error occurs.
•
No error message appears if an invalid upper limit value is set.
When specifying
WWN or iSCSI
name of LDEVs
and HBAs:
Invalid WWNs
Behavior is not guaranteed when an invalid WWN (not in the format
defined by IEEE) is specified.
In VSP G1000, VSP G1500, VSP F1500, if you specify SPM information
for an invalid WWN, you might not be able to set SPM information with
an iSCSI name specified.
In VSP Gx00 models and VSP Fx00 models with DKCMAIN firmware
83-03-0
x
or earlier, if you specify SPM information for an invalid WWN
and then update the firmware to 83-03-2
x
or later, the following errors
might occur:
•
Invalid WWNs with SPM information specified are deleted from the
SPM target.
•
SPM information is set for the iSCSI name of which SPM
information is not specified.
When specifying
WWN or iSCSI
name of LDEVs
and HBAs: I/Os
issued to non-
prioritized
LDEVs
When the number of I/Os issued to a non-prioritized LDEV reaches the
upper limit, I/Os exceeding the upper limit are retained in the storage
system. By this method, host process might be consumed, and I/O
performance of prioritized LDEVs or non-prioritized LDEVs that have
I/Os below the upper limit might be affected. If I/O performance of
other LDEVs becomes lower than expected due to the host process
number limit, review the queue depth settings or alternate path policy
settings of the host.
Cautions when using host groups after registering them in SPM groups (VSP
only)
The following limitations apply when you register host groups in SPM groups
(VSP only):
1
.
You cannot register host groups that contain WWNs for which SPM
information is set in step 1 of
Table 5-4 Controlling server performance
when the host group is not registered in the SPM group on page 5-59
.
Provisioning operations with CCI
5-65
Command Control Interface User and Reference Guide
Summary of Contents for HUS VM
Page 10: ...x Command Control Interface User and Reference Guide ...
Page 18: ...xviii Preface Command Control Interface User and Reference Guide ...
Page 78: ...2 50 CCI software environment Command Control Interface User and Reference Guide ...
Page 154: ...4 8 Starting up CCI Command Control Interface User and Reference Guide ...
Page 191: ...Provisioning operations with CCI 5 37 Command Control Interface User and Reference Guide ...
Page 280: ...6 56 Data replication operations with CCI Command Control Interface User and Reference Guide ...
Page 286: ...6 62 Data replication operations with CCI Command Control Interface User and Reference Guide ...
Page 302: ...7 16 Data protection operations with CCI Command Control Interface User and Reference Guide ...
Page 324: ...8 22 Examples of using CCI commands Command Control Interface User and Reference Guide ...
Page 524: ...9 200 Troubleshooting Command Control Interface User and Reference Guide ...
Page 529: ...Command Control Interface User and Reference Guide ...