IBM System x3690 X5 1I B M ®IBM System x3690 X5IBM Redbooks Product GuideIBM® System x3690 X5 is a powerful two-socket 2U rack-mount server using the latest Intel Xeonprocessors. The x3690 X5 servers can be combined with the IBM MAX5 memory expansion unit for up to2 TB of memory. Add to that the 16 2.5-inch disk drive bays and you have a high performance workhorsein a rack-dense package. The x3690 X5 server belongs to the family of a new generation of EnterpriseX-Architecture® servers. The server delivers innovation with enhanced reliability and availability featuresto enable optimal performance for databases, enterprise applications, and virtualized environments.The IBM System x3690 X5 is shown in Figure 1.Figure 1. The IBM System x3690 X5Did you know?The x3690 X5 offers a two step approach to expanding the system with memory. You can first start with16 DIMMs installed just on the system board, then as needs require, install the memory mezzanine andan additional 16 DIMMs. The for applications that can use the most amount of RAM, use the 1U MAX5memory expansion unit which adds an additional 32 DIMM sockets. The MAX5 scalability and memoryexpansion feature is a unique IBM enhancement, not offered by other x86 server architectures. The totalnumber of DIMM sockets available to the system is then 64 DIMMs -- in only 3U of rack space -- and with32 GB DIMMs, that is 2 TB of RAM.The x3690 X5 servers also contain up to 16 HDD bays that support 2.5-inch hot-swap internal SAS/SATAdrives totaling up to 8TB, or up to 24 solid-state drive bays, supporting 1.8-inch hot-swap SSDs, using upto three IBM eXFlash storage options.Each individual SSD is capable of sustaining approximately 4,300IOPS, which is more than 10X what an enterprise 15,000 RPM 2.5-inch 146.8GB SAS HDD can achieve(420 IOPS).