IBM 5877-82XX 12x Channel I/O Expansion Drawer with 10x PCIe Slots Part #: 45D9977 / 45D5481 / 45D9977 / 73Y9582 / 73Y9583 / 74Y1108
- Brand: IBM
- Part #: 45D9977
- Alt. Part #: 45D5481 / 45D9977 / 73Y9582 / 73Y9583 / 74Y1108
- Base Spec:-
- :: Chassis Type: Expansion & I/O Drawer
- :: Form Factor: Rackmount (4U)
- :: Hot-Plug Adapter Slot #: 10 PCIe with blind-swap cassettes
- :: Hard Drive #: 18 SAS small form factor (SFF) hot-swap disk bays (feature 5802, only)
- :: Power Supply #: Redundant power supplies, standard
- :: Connection: Connected to host server using a 12X loop (Up to two drawers supported per 12X loop)
- :: Condition: Refurbished
- :: Compatibility: IBM Power Systems Servers*
- :: MPN: 45D9977
- Warranty: 1 (one) year Tekmart Africa warranty
PSS: This System is Cutomizable, Contact one of our Technical Staff now!
Key points to note on these 45D9977 IBM 5877-82XX 12x Channel I/O Expansion Drawers:-
The IBM 5802 12X I/O Drawer is an expansion unit designed for IBM Power Systems servers, providing enhanced I/O capabilities and storage options. It is a 4U, 19-inch rack-mounted I/O drawer with 10 PCIe Gen3 slots for adapter cards and 18 hot-swap Small Form Factor (SFF) SAS disk bays, supporting both solid-state drives (SSDs) and hard disk drives (HDDs). The drawer provides up to 5.4 TB of storage and can be organized into several configurations depending on the operating system being used. These configurations include one group of 18 disk bays (for AIX/Linux), two groups of 9 bays (for IBM i, AIX, or Linux), or four groups of 4 or 5 disk bays (for AIX/Linux).
For AIX and Linux, the 5802 requires either 5901 or 5903 PCIe Dual x4 SAS Adapters for positions 1 and 2, and Position 4 requires four 5901 adapters. For IBM i (iSeries/AS400), Position 2 requires two 5901 or 5903 adapters. The 5802 is compatible with IBM Power7 and Power6 systems, and it connects via 12X DDR cables (1861, 1862, 1864, 1865) to the central electronics complex (CEC). A maximum of two 5802 drawers can be connected to the system, and they can be used alongside the 5877 I/O drawer on the same loop. However, mixing the 5802, 5796, and 7314-G30 drawers on the same loop is not supported.
To ensure redundancy, the minimum configuration requires two 12X DDR cables, two AC power cables, and two SPCN cables. Power control cables are also necessary for maintaining redundancy, and all I/O drawers must be looped to avoid performance issues. Non-looped configurations can cause degraded performance. The PCIe slots use blind-swap cassettes, which allow hot-plugging of adapter cards. The recommended slot priority for optimal performance is P1-C1, P1-C4, P1-C2, P1-C5, P1-C3, P1-C6, P1-C7, P1-C8, P1-C9, P1-C10, with specific I/O chips controlling different slots for efficient bandwidth management.
The IBM 5802 is supported by several operating systems, including AIX (Version 5.3, 6.1, 7.1), IBM i (Versions 6.1, 7.1), and Linux (SUSE and Red Hat). The system attaches to the CEC through GX slots with 12X DDR cables and does not support SDR cables. For Power6 and Power7 systems, the 5802 uses specific adapters like the EJ04 GX++ Dual-port 12X and 5609 GX Dual-port 12X for Power7.
For IBM Power8 and newer systems, the 5802 is no longer supported, and users are advised to migrate to the EXP24S SAS HDD/SSD Expansion Drawer (5887) or newer expansion units. Older expansion units like the GX++ attached feature 5802 and 5877 PCIe 12X I/O Drawers are also not supported on newer systems. The 5802 remains a highly effective solution for adding PCIe adapter slots and storage to IBM Power Systems but requires careful attention to adapter and cabling configurations, as well as compatibility with operating systems.
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