1	Operational Deployment and Management of Storage over the Internet David L. Black, EMC IETF opsarea meeting July 30, 2009
2	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 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)
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)
5	IP Storage Network Scenarios and Protocols
6	IP Storage Extension Scenarios: Activate the Wayback Machine ...
7	Remote Disk Mirroring and Diff Serv David L. Black EMC Corporation black_david@emc.com December, 1998 [43^rd IETF, Orlando, FLORIDA]
8	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	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 …
10	Disasters Happen Power out Phone lines down Water everywhere The Systems are Down! This is a problem ...
11	Solution: Remote Disk Mirroring
12	Deactivate the Wayback Machine ...
13	Block Storage Communication Protocols
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)
15	SMI-S: Model-Based Management
16	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)
17	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) Multipathing: MMA-API (for multipathing drivers)
18	Discussion Questions?