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Configuring CIFS

Configuring CIFS. Upon completion of this module, you should be able to: Configure the Data Mover for a Windows environment Create and Join a CIFS Server to a Windows Domain Export a file system as a CIFS Share Describe UserMapper Basics. Module 12: Configuring CIFS.

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Configuring CIFS

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  1. Configuring CIFS Upon completion of this module, you should be able to: Configure the Data Mover for a Windows environment Create and Join a CIFS Server to a Windows Domain Export a file system as a CIFS Share Describe UserMapper Basics Configuring CIFS

  2. Module 12: Configuring CIFS Lesson 1: Overview of Configuring VNX for CIFS During this lesson the following topics are covered: Preparing for CIFS Creating a CIFS server Creating a CIFS share Configuring CIFS

  3. Virtual Data Mover Preparing for CIFS • Configure IP networking • Interface addressing • Routing • Configure Network Services • DNS – Dynamic DNS recommended • NTP • Configure Virtual Data Mover • Best practice for CIFS • Configure a file system • Provides file storage space DataFS cge-1-0 192.168.65.12 /Sales Configuring CIFS

  4. Virtual Data Mover Configuring CIFS: CIFS Server • Start the CIFS service • Runs on physical Data Mover • Create a CIFS server on VDM • Uses an available interface for network communications • CIFS server binds to interface name • Join CIFS server to the Windows Domain • CIFS server created in domain OU EMC Celerra CIFSServer VNX_CIFS01 cge-1-0 192.168.65.12 DataFS /Sales CIFS OU EMC Celerra VNX_CIFS01 Configuring CIFS

  5. Virtual Data Mover Configuring CIFS: Storage • Create CIFS share • From prepared file system • CIFS server makes share available on network to clients • CIFS is now configured on VNX • CIFS server is available to Microsoft network • File storage available to CIFS clients though the CIFS share CIFSServer VNX_CIFS01 cge-1-0 192.168.65.12 DataFS /Sales /DataFS/Sales shared as Sales_data CIFS Sales_data OU EMC Celerra VNX_CIFS01 Configuring CIFS

  6. Configuring CIFS Lesson 1: Summary During this lesson the following topics were covered: Preparing for CIFS Creating a CIFS server Creating a CIFS share Configuring CIFS

  7. Configuring CIFS Lesson 2: Create and Join a CIFS Server to a Windows Domain During this lesson the following topics are covered: Starting CIFS Creating a CIFS Server Joining a CIFS Server to the domain Verifying CIFS server status Configuring CIFS

  8. CIFS Management in Unisphere Storage > Shared Folders > CIFS Configuring CIFS

  9. Starting CIFS Storage > Shared Folders > CIFS Tasks tree > Configure CIFS link Configuring CIFS

  10. Create a CIFS Server Storage > Shared Folders >CIFS > CIFS Servers tab > Create Configuring CIFS

  11. CIFS Server Status • CIFS Server Properties: • Displays status with the domain Configuring CIFS

  12. CIFS Servers in the Windows Environment • CIFS server in Active Directory • CIFS server in Dynamic DNS Configuring CIFS

  13. Configuring CIFS Lesson 2: Summary During this lesson the following topics were covered: Starting CIFS Creating a CIFS Server Joining a CIFS Server to the domain Verifying CIFS server status Configuring CIFS

  14. Configuring CIFS Lesson 3: File System Access via CIFS During this lesson the following topics are covered: Exporting a file system as a CIFS share Creating a top-level file system share Creating shares using Windows tools Configuring CIFS

  15. CIFS Shares • Exporting a file system pathname as a CIFS share • Provide a “share” name File System /DataFS/shared as hidden share Top$ DataFS lost+found .etc /DataFS/Engineering shared as Designs Engineering CIFSServer Structural Designs /DataFS/Sales shared as Sales Sales West Sales Configuring CIFS

  16. Exporting a File System as a CIFS Share: Unisphere Storage > Shared Folders > CIFS > Shares tab Create Configuring CIFS

  17. Exporting a File System as a CIFS Share: Windows • Initial top-level share created with Unisphere must be in place! Computer Management > select CIFS Server • System Tools> Shared Folders > Share > New Share Configuring CIFS

  18. Unisphere Display of CIFS Shares • VNX shares created with Microsoft tools displayed in Unisphere Configuring CIFS

  19. Configuring CIFS Lesson 3: Summary During this lesson the following topics were covered: Exporting a file system as a CIFS share Creating a top-level file system share Creating shares using Windows tools Configuring CIFS

  20. Configuring CIFS Lesson 4: CIFS Operational Considerations During this lesson the following topics are covered: Stopping/restarting the CIFS service Modifying CIFS server interfaces Moving a VDM with a CIFS server CIFS restrictions with VDM Configuring CIFS

  21. CIFS Servers Interface Considerations • Interface “stealing” is: • Possible between CIFS Servers on the same Physical Data Mover • Possible between CIFS Servers on the same Virtual Data Mover • Not possible between CIFS Servers on different Data Movers (Physical or Virtual) • Interfaces are not changed for Default CIFS Servers • Default CIFS Servers automatically use interfaces that are not currently used by any other CIFS Servers • When a CIFS Server interface is disabled • CIFS shares that are connected through this interface will no longer be accessible • Shares need to be reconnected through new interface Configuring CIFS

  22. Stealing CIFS Server Interface • Assigning an already used Interface to a CIFS server: New CIFS Server VNX_CIFS02 being configured Interface already in use by VNX_CIFS01 Configuring CIFS

  23. Start/Stop the CIFS Service • Stop and Restart CIFS service after Changes • WINS settings for legacy NT4 domains • Other CIFS related changes • See Configuring and Managing CIFS on VNX • Stopping CIFS service stops all CIFS servers • On physical Data Mover and its VDMs CIFS Configuring CIFS

  24. Moving a VDM with a CIFS Server • Target physical Data Mover must have interface with same name • CIFS server binds to interface name • Name resolution: • Different IP addresses • Dynamic DNS updates • Client DNS cache flush • Same IP address • Down inactive interface Configuring CIFS

  25. Virtual Data Mover CIFS Restrictions with VDMs • VDM containing a CIFS server cannot be loaded onto physical Data Mover with a “default CIFS server • Default CIFS servers use all available interfaces • VDM CIFS server cannot provide antivirus functionality • Antivirus functionality is provided by “global” CIFS server from physical Data Mover • Refer to Configuring Virtual Data Movers on VNX document for other restrictions CIFSServer Configuring CIFS

  26. Configuring CIFS Lesson 4: Summary During this lesson the following topics were covered: Stopping/restarting the CIFS service Modifying CIFS server interfaces Moving a VDM with a CIFS server CIFS restrictions with VDM Configuring CIFS

  27. Configuring CIFS Lesson 5: Usermapper During this lesson the following topics are covered: Explain Usermapper basic operations Explain Usermapper configuration Configuring CIFS

  28. User Mapping with VNX • Method for uniquely identifying users and groups accessing the VNX with file access protocols (CIFS and NFS) • Windows SIDs • UNIX/Linux UIDs and GIDs • VNX requires UIDs and GIDs • UxFS based file system file and directory permissions • Mapping required for CIFS only & mixed CIFS/NFS environments UID/GID User/Group SIDs Mapping method UID/GID VNX FSUID/GID UNIX/LinuxNFS WindowsCIFS Configuring CIFS

  29. User Mapping Methods • Variety of methods available • Supporting various user environments • Internal and external to VNX Mapping method Configuring CIFS

  30. User Mapping and Secure Mapping • Secmap records (caches) SID to UID/GID mappings provided by user mapping methods • Does not generate mappings • Used for resolving subsequent user mapping • Is persistent mapping • Present on all physical and virtual Data Movers • Mapping entries displayed with CLI only Data Mover Data Mover Mapping method Secmap Secmap Configuring CIFS

  31. ntxmap 3 2 1 ntxmap nsswitch.conf Default mapping search order 3 # /.etc/nsswitch.conf : # passwd: files ldap nis group: files ldap nis hosts: dns nis files netgroup: files nis User Mapping Search Order Yes User is authenticated Yes secmap Start No No Yes Local user & group files The access to CIFS share is allowed No 2 Yes NIS End No Yes LDAP No Yes Active Directory 1 No Yes Usermapper No Usermapper generates UID or GID and ads it to its database Yes Was the user added? An error is generated No Configuring CIFS

  32. Usermapper Overview • A user mapping method which runs on a VNX for File • Mapping method used for CIFS-only user environments • Automatically generates UIDs/GIDs for Windows user/group SIDs • Database maintains mappings • UID and GID values start at 32768 and increase • Custom ranges can be configured in usrmap.cfg file (not recommended) Data Mover Data Mover Usermapper Service Secmap Secmap Configuring CIFS

  33. Usermapper Roles • Primary Usermapper • One per VNX environment • Generates user mappings • By default runs on Data Mover 2 • Secondary Usermapper • One per each additional VNX • Queries Primary Usermapper for mapping • Usermapper client • All other VNX Data Movers • Query Primary/Secondary for user mappings Primary Usermapper Secmap Secmap Data Mover 3 Data Mover 2 Data Mover 3 Data Mover 2 Data Mover 2 Data Mover 3 Secondary Usermapper Secmap Secmap Primary/Secondary UsermapperClient Secmap Secmap Configuring CIFS

  34. Primary Usermapper Operations • Multiple VNXs: one Primary, two Secondary Usermappers • User1 accesses DM2 on VNX1 • Primary Usermapper generates & records UID for user1 SID • Secmap records mapping VNX3 Sec. Usermapper Data Mover 2 Data Mover 2 Data Mover 2 Secmap VNX2 Sec. Usermapper Secmap VNX1 User1 SID Primary Usermapper 1 User1 SID: UID 32768 2 Secmap 3 User1 SID: UID 32768 User1 Configuring CIFS

  35. Secondary Usermapper Operations • Multiple VNXs: one Primary, two Secondary Usermappers • User2 accesses DM2 on VNX2 • Secondary queries Primary for mapping • Primary generates & records UID for user2 SID • Secmap on VNX1 DM2 records mapping • Primary replies with mapping • Secondary records User2 mapping • Secmap on VNX2 DM2 records mapping VNX3 Sec. Usermapper Data Mover 2 Data Mover 2 Data Mover 2 Secmap Mapping Query VNX2 VNX1 User2 SID 2 Sec. Usermapper Primary Usermapper 6 User2 SID: UID 32769 User1 SID: UID 32768 1 User2 SID: UID 32769 3 Mapping reply 5 Secmap Secmap 7 User2 SID: UID 32769 User1 SID: UID 32768 User2 SID: UID 32769 4 User2 Configuring CIFS

  36. Secondary Usermapper Operations (Continued) • Multiple VNXs: one Primary, two Secondary Usermappers • User3 accesses DM2 on VNX3 • Secondary queries Primary for mapping • Primary generates & records UID for user3 SID • Secmap on VNX1 DM2 records mapping • Primary replies with mapping • Secondary records User3 mapping • Secmap on VNX2 DM2 records mapping VNX2 Sec. Usermapper User2 SID: UID 32769 Data Mover 2 Data Mover 2 Data Mover 2 Secmap User2 SID: UID 32769 Mapping Query VNX3 VNX1 User3 SID 2 Sec. Usermapper Primary Usermapper 6 User3 SID: UID 32770 User1 SID: UID 32768 1 User2 SID: UID 32769 Mapping reply 5 3 User3 SID: UID 32770 Secmap Secmap 7 User3 SID: UID 32770 User1 SID: UID 32768 User2 SID: UID 32769 4 User3 SID: UID 32770 User3 Configuring CIFS

  37. Usermapper Client Operations • Multiple VNXs: one Primary, two Secondary Usermappers • User4 accesses DM3 on VNX1 • Client broadcasts to Usermapper service for mapping • DM2 Primary generates & records UID for User4 SID • DM2 secmap records mapping • Primary replies with mapping • DM3 secmap records mapping VNX3 Sec. Usermapper User3 SID: UID 32770 Data Mover 3 Data Mover 2 Data Mover 2 Data Mover 2 Secmap VNX2 User3 SID: UID 32770 Sec. Usermapper User2 SID: UID 32769 Secmap Mapping broadcast User2 SID: UID 32769 VNX1 User4 SID 2 Primary Usermapper Usermapper Client User1 SID: UID 32768 1 User1 SID: UID 32768 User2 SID: UID 32769 User3 SID: UID 32770 Mapping reply 5 3 User4 SID: UID 32771 Secmap Secmap 6 User1 SID: UID 32768 User4 SID: UID 32771 User1 SID: UID 32768 User1 SID: UID 32768 User2 SID: UID 32769 User3 SID: UID 32770 4 User4 SID: UID 32771 User4 Configuring CIFS

  38. Storage > Shared Folders > CIFS > Usermappers tab Viewing the Usermapper Configuration Configuring CIFS

  39. Usermapper Database Backup Storage > Shared Folders > CIFS > Usermappers tab • Backups used to update Secondary database • If promoting to Primary • EMC recommends that you do not modify Usermapper database entries. Configuring CIFS

  40. Storage > Shared Folders > CIFS > Usermappers tab Managing Usermapper Roles Configuring CIFS

  41. Storage > Shared Folders > CIFS > Usermappers tab Managing Usermapper Roles (continued) Configuring CIFS

  42. Configuring CIFS Lesson 5: Summary During this lesson the following topics were covered: Usermapper basic operations Usermapper configuration Configuring CIFS

  43. Summary Key points covered in this module: • Preparation is key to CIFS implementation. Identify key network resources: • Interface addressing • Routing • DNS • NTP • VDM CIFS server cannot provide antivirus functionality • Usermapper provides unique IDs for users and groups from Windows environments that access the Configuring CIFS

  44. Configuring CIFS

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