View source for Insufficient memory available to IO Group error

[[Main_Page|Home]] > [[Storage server]] > [[IBM Storwize V5000 Gen2 storage server]] > [[Insufficient memory available to IO Group error]]

While using IBM Storwize V5000 Gen2 storage server, during creation of a new raid group (Storage pool), we can get following error:
<pre>
CMMVC6532E The command cannot be initiated because there is insufficient free memory that is available to the I/O group.
</pre>

This error is due to lack of memory in iogroup which can be increased by connecting to storage over putty and using following commands:
# lsiogrp -delim :
#:To look for all iogroups.  As such only iogroup 0 might be used.
# lsiogrp -delim : <iogroup number>
#:To get details of iogroup 0
# See the RAID memory allocation listed in above details for concerned iogroup
# Increase the iogroup memory for raid using:
#:<pre>
#::chiogrp -feature raid -size <new-size> <iogroup number>
#:</pre>

In our experience increasing from 40MB to 45MB resolved the issue.


==Related links for study==
; What is an IO Group : https://www.ibm.com/support/knowledgecenter/STVLF4_8.1.0/spectrum.virtualize.810.doc/svc_iogroupovr_1bchag.html
; Memory (Bitmap space) requirements for copy services, volume mirroring or RAID :  https://www.ibm.com/support/knowledgecenter/STHGUJ_7.8.1/com.ibm.storwize.v5000.781.doc/svc_usecopyservmemtask_3t4ljl.html - 
; Get details of an iogroup, specifically "RAID total memory" and "RAID free memory" :  https://www.ibm.com/support/knowledgecenter/STHGUJ_7.8.1/com.ibm.storwize.v5000.781.doc/svc_lsiogrp_21pdk1.html
; Change IO group memory allocation for flash, raid, etc. : https://www.ibm.com/support/knowledgecenter/STHGUJ_7.8.1/com.ibm.storwize.v5000.781.doc/svc_modifyiogroup_21ifvl.html




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