IBM part number 03N6056 is a 1 Gigabit iSCSI TOE PCI-X adapter designed for enterprise storage connectivity over Ethernet. The card features a TCP Offload Engine (TOE) that offloads iSCSI protocol processing from the host CPU, reducing latency and improving throughput for storage area network (SAN) operations. It connects via standard PCI-X slot and supports copper (RJ-45) media for direct gigabit Ethernet connectivity to iSCSI targets. Compatible with IBM servers and select third-party systems from the early-to-mid 2000s era, this adapter is suitable for legacy SAN environments requiring dedicated iSCSI transport without consuming significant host resources. Typical applications include tiered storage architectures, backup operations, and consolidated server deployments where iSCSI provides cost-effective block-level storage access.
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