EMC AX150 Product Guide - Page 11

Figure 4. Cabling the AX150 power You must then decide whether the servers will be directly connected to the storage system or to a SAN. If directly connected, optical cables run from a port on a supported host bus adapter (HBA) directly to a port on the SP. The alternative is to run optical cables from the HBA to a port on a Fibre Channel switch, and then from the Fibre Channel switch to a port on the SP. The section "Supported configurations" on page 21 provides further information. For complete details on installing and connecting your servers to an AX150, refer to the installation documents on the AX150 website: www.emc.com/ax150support Customer replaceable components The AX150 is designed to be customer installable and maintainable. To that end, most components of the AX150 storage system are customer replaceable. These components include the following: • All fans (both SP and system fans) • Single SP suitcase (without the BBCM and without the power supply) • Dual SP suitcase (without power supplies) • Power supplies • SATA II drives (both the 500 GB and 250 GB models) • Battery-backed cache module (BBCM) • UPS battery • UPS chassis • DIMMs To upgrade from a single-controller storage system to a dual-controller system requires a complete suitcase swap. You can also increase the capacity of the storage system by simply inserting new drives into available slots. You are notified of failed components in several ways. The AX150 supports email notification of events to a specified administrator. In addition, the management interface-Navisphere Express-has both an Events page that details all recorded events within the storage system that merit attention, and a Components page, which lists all hardware components within the system and their current state (for example, Normal, Empty, or Failed). Introduction to the AX150 Storage System A Detailed Review 11