Sun Storage 7000 Unified Storage System: Sufficient installed RAM is required for efficient use/performance of installed Read SSDs (readzilla)
(Doc ID 1532289.1)
Last updated on JULY 25, 2018
Applies to:Sun ZFS Storage 7320 - Version All Versions and later
Sun ZFS Storage 7420 - Version All Versions and later
Sun Storage 7310 Unified Storage System - Version All Versions and later
Sun Storage 7410 Unified Storage System - Version All Versions and later
Oracle Exalogic Elastic Cloud Software - Version 18.104.22.168.7 to 22.214.171.124.7
7000 Appliance OS (Fishworks)
Customer is losing FC connection frequently in the storage appliance 7320 (not cluster).
Only FC lun service is been used. Performance issue ?
System configuration is: 7320 + 1 JBOD (1T drives), 24G RAM, 2 x readzillas/logzillas
FC configuration looks OK (Direct Attach - No SAN switches):
Analytics before the reboot shows L2ARC headers using >12G of the available memory.
Drives >95% utilization is also very high. Cache hit rate of only 37%.
Read to write ratio: 70% reads/30% writes.
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