•Discuss
market drivers for IP SAN technology
•List
IP SAN technologies
•List
components and connectivity options of iSCSI
•Describe
iSCSI
architecture and topologies
•Explain
iSNS
operation
•Describe
architecture of FCIP
•In
FC SAN transfer of block level data takes place over Fibre
Channel
•Emerging
technologies provide for the transfer of block-level data over an existing IP
network infrastructure
•IP
is being positioned as a storage transport because:
–Easier
management
–Existing
network infrastructure can be leveraged
–Reduced
cost compared to new SAN hardware and software
–Supports
multi-vendor interoperability
–Many
long-distance disaster recovery solutions already leverage IP-based
networks
networks
–Many
robust and mature security options are available for IP networks.
Block
Storage Over IP – Protocol Options
• iSCSI
–SCSI over IP
•IP encapsulation
–Ethernet NIC card
–iSCSI HBA
•Hardware-based gateway to Fibre
Channel storage
–Used to connect servers
• FCIP
–Fibre Channel-to-IP bridge / tunnel
(point to point)
•Fibre Channel end points
–Used in DR implementations
iSCSI is the host-based encapsulation of SCSI I/O over IP using an Ethernet NIC card or
an iSCSI HBA in the host.
FCIP uses apair of bridges communicating over TCP/IP as the transport protocol.FCIP is
used to extend FC networks over distances and /or an existing IP-based infrastrucre,as
illustrated in fig (b)
an iSCSI HBA in the host.
FCIP uses apair of bridges communicating over TCP/IP as the transport protocol.FCIP is
used to extend FC networks over distances and /or an existing IP-based infrastrucre,as
illustrated in fig (b)