Release Notes

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Dell Storage Center 6.6

Release Notes

This document describes the new features, enhancements, and fixed issues in Storage Center 6.6.

Current Version: 6.6.11

Release Date: 2016 - 07

Previous Version: 6.6.5

Revision History

Document Number: VKP6G

Revision Date Description

A00 April 2015 Initial release

A01 May 2015 Added the fixed issues and enhancements for Storage Center

6.6.5

A02 November 2015 Updated SCv2000 series scalability guidelines

A03 March 2016 Added fixed issues for Storage Center 6.6.11

A04 March 2016 Corrected the description of a fixed issue for Storage Center

6.6.11

A05 July 2016 Added fixed issues for SCv2000 series Storage Centers

Contents

Storage Center 6.6 Feature Availability and Licenses.......................................................................... 2

Storage Center Scalability..................................................................................................................... 2

Requirements for System Manager...................................................................................................... 4

New in this Release............................................................................................................................... 4

Storage Center Fixed Issues..................................................................................................................6

Known Issues....................................................................................................................................... 13

Storage Center Update Information...................................................................................................14

Contacting Dell....................................................................................................................................15

Document Number: VKP6G

Rev. A05

2016 - 07

Summary of content (15 pages)

PAGE 1
Dell Storage Center 6.6 Release Notes This document describes the new features, enhancements, and fixed issues in Storage Center 6.6. Current Version: 6.6.11 Release Date: 2016 - 07 Previous Version: 6.6.5 Revision History Document Number: VKP6G Revision Date Description A00 April 2015 Initial release A01 May 2015 Added the fixed issues and enhancements for Storage Center 6.6.
PAGE 2
Storage Center 6.6 Feature Availability and Licenses Support for the new features in Storage Center 6.6 varies depending on the Storage Center controller. Feature SCv2000 Series Data Compression Flex Port X (Optional) Live Volume SC4020 SC8000 SC040 License Requirements and Notes X X X Requires a Data Progression license in a multi-tier environment X X Requires a Flex Port license X X Requires a Live Volume license Storage Center Scalability Storage Center 6.
PAGE 3
Storage Center Operating System Guidelines The following scalability guidelines are the maximum recommended design guidelines for Storage Center controller SCv2000 series running Storage Center 6.6. Storage Center Object Supported Maximum Disk Folder • 4 disk folders Server • 100 servers (Total number of servers includes physical servers, virtual servers, and server clusters.
PAGE 4
Storage Center Object Live Volume Supported Maximum • 2000 target replications (SC4020: 1000 replications for FC and 230 replications for iSCSI) • 100 Live Volumes Requirements for System Manager Storage Center System Manager is a Java applet that requires the use of a Java plugin to run. The following table provides the minimum software requirements for running System Manager.
PAGE 5
Dell SupportAssist Dell SupportAssist is a support tool that collects, stores, and transmits system state information to Dell Technical Support. SupportAssist can provide automatic case creation based on event alerting, automatic health checks, remote software updates, real-time troubleshooting, and customer support. User Interface Updates Storage Center 6.6 provides the following user interface enhancements to improve usability.
PAGE 6
Storage Center Fixed Issues The following sections summarize the issues fixed in Storage Center 6.6. Fixed Issues in Version 6.6.11 for SCv2000 Series Storage Centers The following table summarizes the issues fixed in Storage Center version 6.6.11 for SCv2000 series Storage Centers. Problem Description CQ00493497 An SCv2000 series controller might reset because of overlapping allocations due to RAID miscompares.
PAGE 7
Problem Description CQ00489465 A volume restripe operation with large amounts of compressed data might take an extended period of time to restripe due to Data Progression errors. CQ00486609 Socket memory leaks might occur due to a daemon process error. CQ00486388 CQ00486381 Controllers might report increased memory usage due to improper release of sockets. Security enhancement regarding the vulnerability CVE-2015 -1283. CQ00481384 A controller reset might occur due to a failover error.
PAGE 8
Problem Description CQ00469084 Upgrading from CT-SC040 controller to SC8000 controller might disable Phone Home and Secure Shell (SSH). CQ00468962 A controller might reset when a disk is set to Unmanaged and causes a NULL pointer. CQ00465226 Updating disks using the System Manager user interface might result in volume data corruption due to previous, incomplete platform updates. CQ00463318 A controller might reboot due to IPC retransmissions. CQ00462385 SMTP service might become unresponsive.
PAGE 9
Issue Description CQ00465212 CQ00465199 CQ00467245 When directly connected to a Storage Center using Enterprise Manager, restoring a disk that has been released, removed, deleted, or replaced in a chassis may fail. CQ00462271 Storage Center may fail to communicate with the correct Phone Home/ SupportAssist server. CQ00462206 The Storage Center System Manager Startup wizard may freeze when adding IO cards and then rebalancing local ports.
PAGE 10
Issue Description CQ00443759 Controller may reset due to a very high volume of system logging. CQ00442519 Controller may reset due to referencing a historic alert object. CQ00441032 Controller may reset during 10G iSCSI port fault domain reconfiguration. CQ00437365 A short duration AC line brownout on an SCv2020 or SC4020 controller may cause unnecessary failover.
PAGE 11
Issue Description CQ00416440 Storage controllers may reset on systems running 6.4.5 while downloading the update to Storage Center 6.5.10. CQ00416071 The failure of a hard drive may cause slow disk performance, if the health code assigned to a failed hard drive does not take the drive out of service. CQ00415741 Storage Center may experience latency if it takes longer than normal to determine the pagepool class when a Replay is taken.
PAGE 12
Issue Description CQ00406050 Storage Center has implemented security enhancements with an update from Apache version 2.2.25 to version 2.2.27 including an update to the SSLCipherSuite list. CQ00405228 Controller may generate power supply alerts for power supplies that are operating within standard specifications. CQ00405062 A Storage Center with scheduled Data Compression enabled may suffer a latency spike if a partial page validation process starts while scheduled Data Progression is running.
PAGE 13
Issue Description CQ00385350 Failed IO may not be retried because a Portable Volume device background timer does not run if a USB device is not present while the controller powers up. CQ00378976 Controller may reset if SMTP runs out of system resources because of an excessive number of email messages or events. CQ00364206 The Storage Center System Manager user interface and CompCU do not allow LUN IDs greater than 255.
PAGE 14
Known Vendor Issues The following table lists vendor issues found with Storage Center. Issue Description CQ00489134 Storage Centers servers running RedHat version 7.1 may experience resets. Workaround: Use the latest recommended version of RedHat. See the Dell Storage Compatibility Matrix. CQ00481040 After controller failover, server connections to Storage Center volumes may fail due to Emulex compatibility. Workaround: Use the latest recommended version of Emulex.
PAGE 15
Updating Software on Storage Center Controllers Storage Center 6.6 supports controller models SC8000, SC4020, SCv2000 series, and CT-SC040. To update Storage Center: • The Storage Center must be running Storage Center version 6.5 or later to perform a SupportAssist update to Storage Center 6.6. This update may require network firewall changes to maintain the transition between Phone Home and SupportAssist. For more information, see the Dell Storage Center Pre-Deployment Tech Note.