System x3250 M5
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I/O expansion options
The x3250 M5 server supports two PCIe slots that come standard with all models. The slot form factors
are specified:
Slot 1: PCIe 3.0 x4 (x4-wired); dedicated slot for the H1110 adapter
Slot 2: PCIe 3.0 x8 (x8-wired), full-height, half-length
Network adapters
The x3250 M5 supports up to four integrated Gigabit Ethernet 1000BASE-T RJ-45 ports (two enabled
standard, and two enabled optionally with the FoD upgrade). One port (Ethernet port 1) is shared between
the IMM2 and the operating system.
The integrated network interface controller (NIC) has the following features:
A Broadcom BCM5719 chip
Up to four Gigabit Ethernet ports (two enabled standard, and two enabled optionally with the
00AM013 FoD upgrade)
NIC Teaming (load balancing and failover)
Ethernet features:
Compliant with 1 Gb Ethernet IEEE 802.3, 802.3u, and 802.3ab PHY specifications
Integrated PHY for 10/100/1000 Mbps for multispeed, full, and half-duplex auto-negotiation
Automatic MDI crossover
IEEE 802.3x-compliant flow control support
IEEE 1588 protocol and 802.1AS time synchronization implementation
IEEE802.3az - Energy Efficient Ethernet (EEE)
I/O Virtualization features:
I/O Virtualization support for VMware NetQueue and Microsoft virtual machine queue (VMQ)
Function Level Reset (FLR)
IEEE 802.1q Virtual Local Area Network (VLAN) tagging support
Stateless offload and performance features:
TCP, IP, and User Datagram Protocol (UDP) checksum offload
TCP segmentation offload (TCO)
Large Send Offload (LSO)
Receive Side Scaling (RSS) and Transmit Side Scaling (TSS)
Message Signal Interrupt (MSI) and Message Signal Interrupt Extension (MSI-X) support
Support for jumbo frames up to 9600 bytes
