Hewlett Packard Enterprise HPE XP7, User Manual, Page: 190 / 311

Workflow for fixing errors when SIMs related to cache
management devices are reported
The
Reference code 670000
SIM (service information message) is issued if the number of the
remaining cache management devices falls below 4,096.
For more information about SIM reference codes, contact HPE Technical Support.
You can view SIMs that occur in the storage system in an RWC window.
For more information about checking alerts and the details of a SIM, see the HPE XP7 Remote Web
Console User Guide .
You must reserve enough cache management devices. If a warning SIM is issued before you deplete
cache management devices, a problem has not necessarily occurred. Using the storage system and
depleting the cache management devices blocks the Fast Snap pair and suspends the pair ("PSUE"
status) and snapshot data cannot be stored or pairs cannot be cloned. In addition, you cannot create a
new Fast Snap pair using another P-VOL.
NOTE: You cannot store snapshot data or create additional Fast Snap pairs using other P-VOLs while the
pair is suspended.
Use the following workflow to fix errors when the warning SIMs related to cache management devices are
reported:
1. Confirm that the number of remaining cache management devices is at least 4,096.
2. Remove unneeded V-VOLs.
3. Remove all of the snapshots in the unneeded P-VOLs by resynchronizing the pairs.
4. Manually complete the SIMs related to cache management devices.
More information
Workflow for fixing errors when pool-related SIMs are reported on page 190
Resynchronizing Fast Snap pairs on page 127
Manually completing SIMs on page 192
Calculating the number of remaining cache management devices
Use this formula to calculate the number of remaining cache management devices.
remaining-cache-management-devices = 65,280 - cache-management-devices-being-used
More information
Viewing the number of cache management devices on page 150
Workflow for fixing errors when pool-related SIMs are
reported
If the pool capacity ensured for writing exceeded the threshold, a pool was blocked, or there is no free
space in shared memory, Service Information Messages (SIMs) below are issued. This topic provides
information about SIMs related to Fast Snap pools. For SIMs related to THP pools, and for details about
the pool usage capacity and the capacity ensured for writing, see the
HPE XP7 Provisioning for Open
Systems User Guide .
Fix pool-related errors by referencing the following Service Information Messages (SIMs):
190 Workflow for fixing errors when SIMs related to cache management devices are reported