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WP1 Draft Proposal VPN for storage applications Andrea Di Giglio

WP1 Draft Proposal VPN for storage applications Andrea Di Giglio. BLZ. BLZ. COM. COM. BGM. BGM. BRE. BRE. MIM. MIM. TRI. TRI. MIB. MIB. PDS. PDS. VEN. VEN. VRS. VRS. TOR. TOR. PCA. PCA. ALE. ALE. GEN. GEN. BOP. BOP. SAV. SAV. PIS. PIS. ANC. ANC. FIR. FIR.

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WP1 Draft Proposal VPN for storage applications Andrea Di Giglio

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  1. WP1 Draft Proposal VPN for storage applications Andrea Di Giglio

  2. BLZ BLZ COM COM BGM BGM BRE BRE MIM MIM TRI TRI MIB MIB PDS PDS VEN VEN VRS VRS TOR TOR PCA PCA ALE ALE GEN GEN BOP BOP SAV SAV PIS PIS ANC ANC FIR FIR PGA PGA PES PES RMI RMI RMS RMS SS SS BAR BAR NOL NOL TAR TAR NAP NAP CTZ CTZ LAM LAM CA CA PAR PAR CAT CAT Storage Data Centers Network 6 Storage data centres • 2 prime SDCs (collect customers’ data and store replicated more valuable data from peripheral SDCs) • 4 peripheral SDCs (only collect customers’ data) Storage Data Centre (SDC) [prime] Storage Data Centre (SDC) [peripheral]

  3. definitions of services Remote Vaulting: the process of transferring data, usually for the purpose of archiving or logging, to a remote site Remote Back-Up: data transfer over communications line and memorization over tape or disk in a remote site Synchronous Disk Mirroring: data recovery strategy that takes a disk or a set disks and synchronously mirrors it/them over high performance communication lines. Any write to a disk on one side will result in a write on the other. The local write will not return until the acknowledgement of the remote write is successful Asynchronous Disk Mirroring: data recovery strategy that takes a disk or a set disks and asynchronously (periodically, or triggered by a particular event) mirrors it/them over high performance communication lines Storage on Demand: storage capacity in a remote site available by a client (customer)  through communication lines

  4. customer’s site customer’s site customer’s site servers servers servers SAN/LAN SAN/LAN SAN/LAN on-site storage on-site storage on-site storage service scenario storage systems(disks, tapes, ...) VPN between a customer site and a SDC SAN/LAN SP’s data centre VPN between a two SDCs storage systems(disks, tapes, ...) VPN between a customer site and a couple of SDCs SAN/LAN SP’s data centre

  5. tape libraries disk storage service scenario (2) InternetDataCentre - Recovery Data Centre Management Systems to another SDC FC-fabric gateways NAS/SAN iSCSI FC/IP LAN IP/GbE L1VPN StorageData Centre (SDC) L1VPN optical MAN/WAN Large Companies FC/WDM router LAN SCSI/IP/GbE FC/IP/GbE NFS,CIFS/IP/GbE servers w/ FC HBA L2VPN GE Virtual remote site (backup/mirroring) FC SAN FC storage OADM Virtual remote site Virtual remote site Primary storage (block, file) LAN servers w/ iSCSI driver iSCSI storage SAN GW FCIP LAN LAN Medium-size Companies NAS Small Companies

  6. service requirements

  7. service requirements on access network

  8. service architecture (1) remote tape vaulting remote backup Data Center Cliente Remote Vault Site Remote Vault Site Application BackUp Server Data Center Cliente Back-UpServer File SystemServer File SystemServer NT NT NT NT NT N NT NT Server w/ internal storage Server w/ internal storage Tape Library Disk Array Tape Library Disk Array Disk Array Disk Array remote storage on demand Remote Storage Site Storage Storage Switch Switch LAN/SAN NT NT NT NT cliente Disc

  9. disk mirroring (syncrhronous and asynchronous) Data Center Cliente Soluzion 1 Remote Mirror Site Storage NT NT Switch Switch Data Machine NT NT NT NT NT NT Soluzion 2 Data Machine Soluzion 3 Virtualmirr. NT 1: Server Based (Volume manager) 2: Data Machine Based (e.g. SRDF, PPRC, …) 3: Network Based (device per mirroring) Data Machine service architecture (2)

  10. particular focus on FC and L2 VPN architectures 2 main references models are proposed: Transparent frame based Fibre Channel over PWE3 FC-BB-3_GFPT over PWE3

  11. LAN LAN LAN SAN SAN SAN Transparent frame based Fibre Channel over PWE3 – reference architecture p2p L2 VPN: PWE3 connections FC E_Port FC-BB-x_PW FC-BB-x_PW FC E_Port PSN Netwok FC-BB-x_PW FC E_Port

  12. Fibre channel frame 4 bytes PW 24 bytes Encapsulation Header 0-2112 byte data field Transparent frame based Fibre Channel over PWE3 - protocol adaptation Frame type: data, control Length Flow control

  13. LAN LAN LAN SAN SAN SAN reference architecture for FC SANs (using GFP-T) p2p L2 VPN: PWE3 connections FC E_Port FC E_Port CE FC-BB-3_GFPT FC-BB-3_GFPT CE PE PE PSN Netwok FC-BB-3_GFPT CE PE FC E_Port Note: the E_port of Fibre Channel equipment serves as CE and the FC-BB-3_GFPT_PW as Provider Edge in the L2 VPN architecture

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