Nexsan iSeries™ iSCSI and iSeries Topologies Name Brian Montgomery Title Technical Director Phone: 353 1 8881000 Mobile: 353 87 2438227 Email: bmontgomery@datarch.com URL: www.datarch.com Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

Old Way – Direct Attached Storage NEW Way – iSCSI SAN Attached DAS = Old Way Nexsan iSeries™ iSCSI SAN = New Way The old way – data and storage are direct attached – difficult to share, manage and protect The New Way – Data and storage are iSCSI SAN attached – easy to share, manage and protect Virtualization Mirroring Replication Snapshots Data Migration Old Way – Direct Attached Storage NEW Way – iSCSI SAN Attached Nexsan iSeries Shared storage pool Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

iSCSI Key Advantages Low TCO Know How Ubiquitous Software Use server onboard Ethernet, NICs, or 3rd party TOE (TCP Offload Engine) Use regular Ethernet switches for networking Low to zero software costs Know How Well known protocol to IT managers Simple to set up on server and storage Ubiquitous Software Software initiators built in to Windows, VMware, Solaris Linux, etc. Particular Good Fit for Server Virtualization Software initiators can run in virtual machine IP based so very easy to transfer for high availability Low TCO, excellent fit to server virtualization project goals Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

iSCSI Protocol Encapsulation of SCSI commands and data over TCP/IP SCSI Commands/Data Merge This slide with the slide of iSCSI benefits IP Network Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A 4

How it Works – Physical Servers Application Operating System File System iSCSI Software Initiator Any NIC or TOE Any Ethernet iSCSI Target SCSI commands are extracted from the iSCSI packet and are executed on the physical storage Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A 5

FC Connected Nexsan Storage Nexsan iSeries - Entry Level iSCSI SAN Nexsan iSeries Entry Level A complete iSCSI SAN Includes enterprise-class storage services High density-highly scalable Scale up to 1PB (petabyte) Nexsan “GREEN” AutoMAID Includes: Storage pooling and virtualization Snapshots, mirroring and replication Production Site Clients on an IP LAN Application Servers iSCSI SAN Nexsan iSeries - SAN FC Connected Nexsan Storage Nexsan - SATABoy Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

Nexsan iSeries - Entry Level iSCSI SAN Clients on an IP LAN Application Servers – iSCSI connected 1Gb IP Switch 1Gb non-blocking IP network Nexsan iSeries (200i, 400i) Nexsan SAS storage pool with redundant FC connections to iSeries Nexsan SATA storage pool with redundant FC connections to iSeries Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

Nexsan iSeries - Enterprise Level iSCSI SAN A complete iSCSI SAN Includes enterprise-class storage services Integrated Nexsan SAS and SATA storage High reliability and performance High density-highly scalable Scale up to 1PB (petabyte) Nexsan “GREEN” AutoMAID Includes: Storage pooling and virtualization Snapshots, mirroring and replication Redundancy and multi- pathing Production Site Clients on an IP LAN Application Servers iSCSI SAN Nexsan –Clustered iSeries SAN FC Connected Nexsan Storage Nexsan - SATABeast Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

Nexsan iSeries - Enterprise Level iSCSI SAN Clients on an IP LAN Application Servers – iSCSI dual path connected Redundant 1Gb non-blocking IP network 1Gb IP Switch 1Gb IP Switch Redundant Nexsan iSeries (200i, 400i) Nexsan SAS storage pool with redundant FC connections to iSeries Nexsan SATA storage pool with redundant FC connections to iSeries Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

Combine an FC SAN with an iSCSI SAN Servers use both an FC SAN and an iSCSI SAN Reduce storage costs by providing multiple storage tiers Migrate old data to lower cost iSCSI FC SAN iSCSI SAN Nexsan iSeries(TM) with Nexsan SATABeast HP EVA Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

Mirroring - Active / Active HA – site Production Site Production Site Servers using iSCSI Servers using iSCSI IP Network / Campus LAN Clustered Nexsan iSeries(TM) mirroring data to two independent arrays for high availability Nexsan iSeries™ Nexsan iSeries™ Primary Data Path Failover Data Path Heartbeat Path SATABeast Array SATABeast Array Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

iSCSI Failover Data Path FC Mirror/ failover Path Unique iSeries Metro Cluster HA Architecture for HA Virtual Server Environments Site A Site B Guests IP Network Virtual Server Host Heart-beat iSCSI Failover Data Path iSCSI Data Path Heart-beat Nexsan iSeries FC Mirror/ failover Path FC Connection FC Data Path Production IO Nexsan FC Storage Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

Unique iSeries Metro Cluster – iSeries Appliance or Connection Outage - HA Architecture for HA Virtual Server Environments Site A Site B IP Network Heart-beat Heart-beat FC Connection Production IO Dropped Paths Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

Unique iSeries Metro Cluster – iSeries Storage Outage HA Architecture for HA Virtual Server Environments Site A Site B IP Network Heart-beat Heart-beat FC Connection Production IO Dropped Paths Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A

Unique iSeries Metro Cluster – Site Outage HA Architecture for HA Virtual Server Environments Site A Site B IP Network Heart-beat Heart-beat FC Connection Production IO Nexsan iSeries™ iSCSI & iSeries Topologies GA012709-A Dropped Paths

Nexsan iSeries™ Topologies GA012709-A