Release Notes

Issue Description
SCOS-18986 The Secure Console connection alert might fail to clear after Secure Console is disabled.
Fixed Issues Related to Data Reduction
The following issues are fixed in Storage Center 7.3:
Table 8. Fixed Data Reduction Issues in Storage Center 7.3.20
Issue Description
SCOS-54104 Deduplication might fail to occur on a storage system because the Data Optimazation Dedup Capable
attributes are set to false after a storage system is updated to Storage Center 7.3.4 or later.
Table 9. Fixed Data Reduction Issues in Storage Center 7.3.11
Issue Description
SCOS-54988 Secondary storage data might be erroneously recovered as lost space during data progression.
SCOS-54249 On a storage system running deduplication, the deduplication ratio might be low because of an issue
that prevents the deduplication dictionary from growing.
SCOS-54180 On a storage system with volumes that have many optimized pages, a controller might reset because
of a memory exhaustion issue.
SCOS-52707 An SC8000 controller with 16 GB of memory might reset if the deduplication dictionary grows too
large.
SCOS-48236 A restripe statistic might be incorrect within a 5-minute window during which a copy completes.
Table 10. Fixed Data Reduction Issues in Storage Center 7.3.6
Issue Description
SCOS-53301 A controller might reset when defragmentation is enabled on a storage system that uses
deduplication.
SCOS-52955 If compression or deduplication is enabled on storage system with front-end SAS ports, a controller
failover might cause a Permanent Device Loss (PDL) condition for an ESXi host.
Table 11. Fixed Data Reduction Issues in Storage Center 7.3.4
Issue Description
SCOS-52711 During data deduplication operations, a read may not complete in a timely fashion, which could result
in unexpected system behavior.
Table 12. Fixed Data Reduction Issues in Storage Center 7.3.2
Issue Description
SCOS-50937 A controller might reset if the Deduplication Page Manager (DPM) defragmentation process is paused
during Data Progression and the PagesBeingRead list is not cleared before the DPM defragmentation
process resumes.
SCOS-50517 Deleting volumes that use deduplication might take longer than normal to complete and result in
increased latency on the Storage Center.
Table 13. Fixed Data Reduction Issues in Storage Center 7.3.1
Issue Description
SCOS-49144 Data progression might stop running or the Storage Center might reset when a payload checksum
failure occurs due to table entries being read incorrectly from memory.
SCOS-49069 In rare instances, increased latency might occur on a storage system if a pagepool consolidation
process is active.
12 Storage Center 7.3 Release Notes