1. 1EMC CONFIDENTIAL—INTERNAL USE ONLY Host Training Manfred Zhuang 2015/02/26

2. 2© Copyright 2014 EMC Corporation. All rights reserved. Host Introduction Basic host side disk management PowerPath Introduction How to collaborate with SSG/XBU team Agenda

3. 3© Copyright 2014 EMC Corporation. All rights reserved. Host to SAN Topology

4. 4© Copyright 2014 EMC Corporation. All rights reserved. What Is Host Host – Operating System – Application – Cluster Software – File system(If needed) – Volume Manager(If needed) – Multipathing Software – Kernel Drivers – Hardware Controller(e.g.HBA) – Physical Hardware

5. 5© Copyright 2014 EMC Corporation. All rights reserved. Operating Systems Unix: Linux PowerSPARC PA-RISC Intanium x86

6. 6© Copyright 2014 EMC Corporation. All rights reserved. Operating Systems cont’d Windows Server 2003 2008 2012 VMware x86

7. 7© Copyright 2014 EMC Corporation. All rights reserved. Virtualization Technology MicrosoftVMwareLinux

8. 8© Copyright 2014 EMC Corporation. All rights reserved. OS Layer

9. 9© Copyright 2014 EMC Corporation. All rights reserved. Cluster is a general term that describes a group of two or more separate servers operating as a single unit to provide High- Availability and scalability for applications Cluster

10. 10© Copyright 2014 EMC Corporation. All rights reserved. Cluster Topology

11. 11© Copyright 2014 EMC Corporation. All rights reserved. Oracle RAC(Real Application Cluster) IBM PowerHA(Formerly HACMP) Symantec VCS(Veritas Cluster Server) Redhat RHEL Cluster Microsoft MSCS(Microsoft Cluster Service) Oracle Solaris Cluster(Formerly SUN Cluster) HP Service Guard Cluster Products

12. 12© Copyright 2014 EMC Corporation. All rights reserved. Host Introduction Basic host side disk management PowerPath Introduction How to collaborate with SSG/XBU team Agenda

13. 13© Copyright 2014 EMC Corporation. All rights reserved. AIX: #cfgmgr Solaris: #devfsadm HPUX #ioscan How to Rescan New Devices

14. 14© Copyright 2014 EMC Corporation. All rights reserved. How to Rescan New Devices Linux: – SCSI scan function in /sys # cd /sys/class/scsi_host/host[X]/ # ls -al scan # echo ‘- - -’ > scan – System reboot – SCSI scan through HBA vendor scripts Qlogic/Emulex has the FC HBA LUN Scan Utility which is available from the official website. – SCSI scan through Linux distributor provided scripts. SuSE Linux Enterprise Server (SLES) provides a script named /bin/rescan-scsi-bus.sh. It can be found as part of the SCSI utilities package.

15. 15© Copyright 2014 EMC Corporation. All rights reserved. How to Rescan New Devices Windows: #devmgmt.msc

16. 16© Copyright 2014 EMC Corporation. All rights reserved. How to Rescan New Devices Windows: #diskmgmt.msc

17. 17© Copyright 2014 EMC Corporation. All rights reserved. How to Rescan New Devices VMware: Pick the server -> click Configuration tab -> click Storage -> click”Rescan All…”

18. 18© Copyright 2014 EMC Corporation. All rights reserved. Host Introduction Basic host side disk management PowerPath Introduction How to collaborate with SSG/XBU team Agenda

19. 19© Copyright 2014 EMC Corporation. All rights reserved. PowerPath is a software that is used to manage the I\O across the paths. Failover and Dynamic load balancing. Symmetrix, Clariion, VNX and other third party arrays. Supported on Windows, Linux, HP-UX, AIX, Solaris, ESX, ESXi. PowerPath Introduction

20. 20© Copyright 2014 EMC Corporation. All rights reserved. PowerPath sits between the applications and the HBA driver Applications direct I/O to PowerPath PowerPath directs I/O to an optimal path based on current workload and path availability PowerPath Introduction DBMS Management Utils File System Logical Volume Manager SCSI Controller Applications PowerPath SCSIDriverSCSIDriverSCSIDriverSCSIDriverSCSIDriverSCSIDriver

21. 21© Copyright 2014 EMC Corporation. All rights reserved. PowerPath Introduction Failover

22. 22© Copyright 2014 EMC Corporation. All rights reserved. Host Introduction Basic host side disk management PowerPath Introduction How to collaborate with SSG/XBU team Agenda

23. 23© Copyright 2014 EMC Corporation. All rights reserved. Open internal collaboration chat http://internalchat.corp.emc.com/InternalChat/prem.aspx For Powerpath issue, please open chat in below queue, SSG PowerPath Unix SSG PowerPath Windows For host consult purpose, Host Consult – AIX/HPUX/Linux/Solaris/Windows/ESX/Unix Others How to Collaborate with SSG/XBU

24. 24© Copyright 2014 EMC Corporation. All rights reserved. Consult SMEs before opening chat. To improve collaboration efficiency, please clearly provide detailed information. What you need to assist? What is the history? (e.g. Pre-check before Upgrade) Which server? Which configuration/component need to be checked specifically?(e.g. powerpath, device info, compatibility, error message, or just general check per customer request) How to Collaborate with SSG/XBU

25. 25© Copyright 2014 EMC Corporation. All rights reserved. Q&A