Document Number: 680-021-022 Rev. G December 2020 Storage Center 7.4 Release Notes This document describes the new features, enhancements, fixed issues, and known issues in Storage Center 7.4. Current Release Version: 7.4.21 Previous Release Version: 7.4.20 Topics: • • • • • • • • • • • Document Revision History Compatibility New in Storage Center 7.4.20 New in Storage Center 7.4.10 New in Storage Center 7.4.2 Storage Center 7.4 Feature Availability and Licenses Storage Center 7.
NOTE: Storage Center 7.4 supports cabling mixed-speed expansion enclosures. SC400, SC420, and SC420F expansion enclosures can be cabled with SC200 and SC220 expansion enclosures. New in Storage Center 7.4.20 The following features and improvements were added to Storage Center 7.4.20: Live Volume with Auto Failover Support The Live Volume with Auto Failover feature supports the following hypervisor platforms in Storage Center 7.4.
● VMware vSphere 5.5 Performance Improvements Storage Center 7.4 contains performance improvements to the Storage Center software . SSL Certificate Improvements Improvements have been made to SSL certificate handling to enable the following: ● Importing of chained SSL certificates ● Wildcard certificates Storage Center Initial Configuration with Unisphere The Unisphere web interface in Storage Center 7.
Windows Server 2019 Support for hosts running Windows Server 2019 has been added to Storage Center 7.4. Storage Center 7.4 Feature Availability and Licenses The core licenses and support for optional licensed features varies depending on the storage system.
Licenses/Bundles Licensed Features ● Dynamic Controllers ● Live Migrate ● Local Data Protection Optional Licenses ● ● ● ● ○ Data Instant Replay (Snapshots) ○ Manual Replay (Snapshots) Multi-VLAN Tagging Virtual Ports Volume QoS VVols ● ● ● ● ● Live Volume and Live Volume with Auto Failover Remote Instant Replay (Replication), including Cross-Platform Replication Replay Manager SED FIPS Secure Data Storage Manager Chargeback SC7020F and SC5020F Features and Licenses The following licensed features are
Licenses/Bundles Licensed Features ● Local Data Protection Optional Licenses ● ● ● ● ○ Data Instant Replay (Snapshots) ○ Manual Replay (Snapshots) Multi-VLAN Tagging Virtual Ports Volume QoS VVols ● ● ● ● ● Live Volume and Live Volume with Auto Failover Remote Instant Replay (Replication), including Cross-Platform Replication Replay Manager SED FIPS Secure Data Storage Manager Chargeback Storage Protection Bundle ● Live Volume and Live Volume with Auto Failover ● Remote Instant Replay (Replication),
Licenses/Bundles Licensed Features Remote Data Protection Bundle Remote Instant Replay (Replication), including Cross-Platform Replication Remote Data Protection with Live Volume Bundle ● Remote Instant Replay (Replication), including Cross-Platform Replication ● Live Volume and Live Volume with Auto Failover SCv3000 Series Features and Licenses The following licensed features and optional value-added bundles are supported on SCv3000 series storage systems: Licenses/Bundles Licensed Features Core So
Licenses/Bundles Licensed Features ○ Data Instant Replay (Snapshots) ○ Manual Replay (Snapshots) ● Remote Data Protection (Asynchronous replication only) Storage Center 7.4 Scalability The following scalability guidelines apply to Storage Center 7.4: Storage System Scalability Guidelines The following scalability guidelines apply to SC9000, SC8000, SC7020F, SC7020, SC5020F, SC5020, SC4020, SCv3000 Series, and SCv2000 Series storage systems running Storage Center 7.4. Table 1.
Table 2.
Table 3.
Table 4. Storage Center Scalability Guidelines for SCv2000 Series Storage Systems (continued) Storage Center Object Supported Maximum Thin Import 10 volumes (maximum simultaneous imports) Fixed Issues The following sections summarize the issues fixed in Storage Center 7.4: Fixed Issues Related to Alerts and Reporting The following issues are fixed in Storage Center 7.4: Table 5. Fixed Alert and Reporting Issues in Storage Center 7.4.
Fixed Issues Related to Data Reduction The following issues are fixed in Storage Center 7.4: Table 8. Fixed Data Reduction Issues in Storage Center 7.4.20 Issue Description SCOS-60622 Deduplication might pause because Storage Center keeps changing the Dedup capable attribute to False for pagepools that support deduplication. SCOS-60386 A storage system might fail to completely defragment partial pages because of a change introduced in Storage Center 7.4.5.
Table 11. Fixed Hardware Issues in Storage Center 7.4.10 Issue Description SCOS-59862 A storage system with SEDs might fail to initialize after a complete system power cycle. SCOS-59486 A controller with an MVLAN fault domain and iSCSI QRQ ports might fail to boot because of an issue with iSCSI QRQ port logic. SCOS-59111 The iSCSI QRQ interfaces on SCv3000 series and SC5020 storage systems might reset repeatedly after updating to Storage Center 7.4.2.
Table 15. Fixed Licensing, SupportAssist, and Updating Issues in Storage Center 7.4.2 (continued) Issue Description SCOS-54088 A Storage Center update check might report an update blocker because failed disks that have been previously replaced are not ignored when the update check is performed. SCOS-53468 Map OS definitions might fail to load after updating a storage system from Storage Center 6.7 to Storage Center 7.2 or later.
Fixed Issues Related to Storage Management The following issues are fixed in Storage Center 7.4: Table 20. Fixed Storage Management Issues in Storage Center 7.4.21 Issue Description SCOS-61881 Rebalancing ports on a storage system might cause volumes to go down because of a change made in Storage Center 7.4.20. Table 21. Fixed Storage Management Issues in Storage Center 7.4.
Table 22. Fixed Storage Management Issues in Storage Center 7.4.10 (continued) Issue Description SCOS-20076 A controller might reset during a Secondary Storage page read if the history is detached from Secondary Storage. Table 23. Fixed Storage Management Issues in Storage Center 7.4.2 Issue Description SCOS-58375 On a dual-controller storage system with 4096 byte or larger sector size drives, a controller failover might fail to occur because of a page pool failure caused by I/O alignment issues.
Table 23. Fixed Storage Management Issues in Storage Center 7.4.2 (continued) Issue Description SCOS-54172 Storage Center RAID devices might become over degraded if writes to multiple disks fail around the same time. SCOS-54122 When drives are added to a storage system, pagepool devices may not be correctly marked for pruning.
Table 25. Fixed User Interface Issues in Storage Center 7.4.2 Issue Description SCOS-58275 A storage system might experience CPU usage of 100 percent because of a looping HTTP client request. SCOS-55290 The Storage Manager Client and Unisphere web interface do not display accurate depuplication and compression statistics for storage tiers. SCOS-53443 Attempting to connect to a Storage Center using the Unisphere web interface might fail if the Storage Center cannot communicate with a DNS server.
Known Issues Related to Data Reduction The following known issues are related to Data Reduction: Table 27. Known Data Reduction Issues Issue Description SCOS-13237 The Storage Type Data Reduction statistics might be incorrect if the amount of data eligible for Data Reduction contains fewer than 256 pages. Workaround: None Known Issues Related to Hardware The following known issues are related to hardware: Table 28.
Table 29. Known Replication and Live Volume Issues (continued) Issue Description SCOS-17981 Server mappings may not be removed completely when a server is removed from a cluster using Storage Manager before the server is removed from the cluster. Workaround: Remove the server from the cluster through the operating system first. After the server is rebooted, remove the server object using Storage Manager.
Known Issues Related to User Management The following known issues are related to user management: Table 31. Known User Management Issues Issue Description SCOS-11192 Storage Center cannot authenticate directory service users that are configured to use an alternate DNS suffix. Workaround: None Known Issues Related to Vendors The following known issues are related to vendors: Table 32. Known Vendor Issues Issue Description SQAI-9 An ESXi 5.
Support Resources The following sections provide resources for finding more information about using a Storage Center storage system: Storage Center Update Information Contact technical support to determine the Storage Center software version that is required to update to Storage Center 7.4. NOTE: When updating both the Storage Center and Storage Manager software, update the Storage Manager software before updating the Storage Center software.
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