1. July 30, 2009opsarea meeting, IETF Stockholm1 Operational Deployment and Management of Storage over the Internet David L. Black, EMC IETF opsarea meeting July 30, 2009

2. July 30, 2009opsarea meeting, IETF Stockholm2 Context IETF storage protocols –Block: iSCSI, including iSER –Fibre Channel tunneling over IP: FCIP, iFCP –File: NFSv4 New IETF Transport WG: storm –STORage Maintenance –Updates to Block and FC transport protocols –Associated MIB updates (iSCSI, FC transport over IP) Q: What’s the proverbial “rest of the picture”? –Operational and management aspects But first, some background...

3. Storage Networking Standards: Recent Developments © 2008 Storage Networking Industry Association. All Rights Reserved. 3 Storage Networking Standards Data Protocols SCSI (T10) Fibre Channel (T11) ATA and SATA (T13) NAS (IETF, Microsoft) IP Storage (IETF) Management SMI-S (SNIA) Uses CIM (DMTF) SNMP (IETF) Web (IETF, W3C) Stored Data RAID Layout (SNIA) Encryption (IEEE) Fixed Content (SNIA)

4. Storage Networking Standards: Recent Developments © 2008 Storage Networking Industry Association. All Rights Reserved. 4 Storage Protocol Classes Network Communication Fibre Channel Fabric IP Storage (iSCSI, FCIP, iFCP) Network Attached Storage (NAS) Drive Interface FC-AL (Arbitrated Loop) Parallel SCSI and Serial Attach SCSI (SAS) ATA and Serial ATA (SATA) Storage Network

5. 5 © Copyright 2008 EMC Corporation. All rights reserved. IP Storage Network Scenarios and Protocols Extension Servers and storage on SAN FCIP or iFCP protocol Host-to-storage or replication Bridging Servers Ethernet attached Storage Fibre Channel attached iSCSI protocol = IP = FC Native All Ethernet (no Fibre Channel) iSCSI protocol Standard Ethernet switches and routers

6. July 30, 2009opsarea meeting, IETF Stockholm6 IP Storage Extension Scenarios: Activate the Wayback Machine...

7. 7 EMC 2 The Enterprise Storage Company Remote Disk Mirroring and Diff Serv David L. Black EMC Corporation black_david@emc.com December, 1998 [43 rd IETF, Orlando, FLORIDA]

8. 8 EMC 2 The Enterprise Storage Company Remote Disk Mirroring Promising application for Diff Serv The application exists, but not on the Internet It can use a *lot* of bandwidth Example to add to web, IP telephony,... Diff Serv is a fundamental enabler QoS assurances are required The missing piece of technology …

9. 9 EMC 2 The Enterprise Storage Company What is a Disk Array? 100s of Gigabytes to Terabytes Connects to almost everything Mainframe, Unix, NT, etc. Highly Reliable Mirrored, RAID Redundant Power UPS, Batteries Etc., etc. BUT … SYMMETRIX

10. 10 EMC 2 The Enterprise Storage Company Disasters Happen Power out Phone lines down Water everywhere The Systems are Down! This is a problem...

11. 11 EMC 2 The Enterprise Storage Company Solution: Remote Disk Mirroring Disk Array Remote Disk Mirroring MiamiChicago The Same Data in Two Places Hurricane Andrew is NOT in Chicago [SRDF]

12. July 30, 2009opsarea meeting, IETF Stockholm12 Deactivate the Wayback Machine...

13. Storage Networking Standards: Recent Developments © 2008 Storage Networking Industry Association. All Rights Reserved. 13 Block Storage Communication Protocols T10 T11 IETF SCSI Architecture (SAM) & Commands (SCSI-3) Any IP Network iSCSI TCP IP FCIP iFCP TCP Any IP Network Parallel SCSI & SAS SCSI & SAS Cables Fibre Channel FCP VIFICONIP (RFC 4338) FC Fibers, Switches FC-1 FC-2 FC-0

14. Storage Networking Standards: Recent Developments © 2008 Storage Networking Industry Association. All Rights Reserved. 14 Storage Networking Standards Data Protocols SCSI (T10) Fibre Channel (T11) ATA and SATA (T13) NAS (IETF, Microsoft) IP Storage (IETF) Management SMI-S (SNIA) Uses CIM (DMTF) SNMP (IETF) Web (IETF, W3C) Stored Data RAID Layout (SNIA) Encryption (IEEE) Fixed Content (SNIA)

15. Storage Networking Standards: Recent Developments © 2008 Storage Networking Industry Association. All Rights Reserved. 15 Management Application – Platform Independent Distributed Automated Discovery Security Locking Object Oriented SMI-S Interface CIM/WBEM Technology Tape Library SwitchArray Many Other Vendor Unique Function MOF Standard Object Model per Device Auto-generation of infrastructure constructs Integration Infrastructure Object Model Mapping SMI-S: Model-Based Management

16. July 30, 2009opsarea meeting, IETF Stockholm16 Storage Operations and Mangement Considerations Most storage management: Capacity and data management –Storage vs. Network management disciplines –Operational storage management includes back-up, disaster recovery, provisioning, etc. IETF block storage and FC tunnel protocols –Part of a larger protocol family –SCSI typically not managed as a protocol Protocol: Specific SCSI transport (e.g., iSCSI, FCP/FC, SAS) Device access control: not part of SCSI transport

17. July 30, 2009opsarea meeting, IETF Stockholm17 Standards for Storage Management SMI-S: model-based CIM –All aspects of storage, used for active management –Transports: simple XML encap over HTTP, WS-Management MIBs for specific protocols (e.g., iSCSI) –Primary use: monitoring –Extensive suite of FC MIBs can be used for configuration Storage device/array management –Interfaces are often vendor-specific –Web GUIs are common Device APIs [HBA is storage analog to NIC] –FC: HBA-API –iSCSI: IMA-API (for iSCSI HBAs)

18. July 30, 2009opsarea meeting, IETF Stockholm18 Discussion Questions?