Lenovo ThinkSystem ST550 Product Manual page 7

Components Specification
Disk drive bays Available configurations:
Additional drive bays (except for 20-bay and hybrid configurations):
Maximum
internal storage
Storage
controller
Optical drive Two half-height 5.25-inch bays for optical or tape drives. Supports DVD-ROM or Multiburner.
bays Hot-swap bays can be converted to 4x 2.5-inch hot-swap drive bays. (Not available with
simple-swap drive configurations.)
Tape drive bays Two half-height 5.25-inch bays for optical or tape drives. Support for one RDX drive or LTO
tape drive.
Network Two integrated Gigabit Ethernet 1000BASE-T ports (RJ-45) based on Intel X722 embedded
interfaces controller
PCI Expansion Up to 7 PCIe slots: 6 general purpose PCIe 3.0 slots plus one slot reserved for the M.2
slots adapter. General purpose slots are as follows:
Slots 3 and 5 support double-wide GPUs
Ports
Cooling Supports ASHRAE A2 environments as well as A3/A4 with some limitations. Up to four simple-
swap fans: two fans shipped standard on single processor models and three fans shipped on
dual processor models. The fourth fan is N+1 redundant, except for certain configurations.
Lenovo ThinkSystem ST550 Server
8, 16, or 20x 2.5-inch SAS/SATA hot-swap (optional support for NVMe drives)
4 or 8x 3.5-inch SAS/SATA hot-swap
Both 8x 3.5-inch + 4x 2.5-inch SAS/SATA hot-swap
4 or 8x 3.5-inch SATA simple-swap
Two 5.25-inch drive bays for optical drives
95.4 TB with 8x 10TB 3.5-inch HDDs + 4x 3.84TB 2.5-inch SSDs
80 TB with 8x 10TB 3.5-inch NL SAS or NL SATA hot-swap HDDs
76.8 TB with 20x 3.84TB 2.5-inch SAS hot-swap SSDs
80 TB with 8x 10TB 3.5-inch NL SAS or NL SATA simple-swap HDDs
Intermix of SAS and SATA is supported.
Onboard 6 Gb SATA for simple-swap drive configurations, using embedded Intel RSTe
software RAID, supporting RAID 0, 1, 10, 5, 50
12 Gb SAS/SATA RAID for hot-swap drive configurations:
RAID 530i (cacheless) supports RAID 0, 1, 10, 5, 50
RAID 730-8i (China only) with 1GB cache supports RAID 0, 1, 10, 5, 50
RAID 930-8i with 2GB flash-backed cache supports RAID 0, 1, 10, 5, 50, 6, 60
RAID 930-16i and 24i with 4GB flash-backed cache supports RAID 0, 1, 10, 5,
50, 6, 60
12 Gb SAS/SATA non-RAID: 430-8i and 430-16i HBAs
Slot 1: PCIe 3.0 x8 (25W) FHHL
Slot 2: PCIe 3.0 x16 (75W); FHHL
Slot 3: PCIe 3.0 x16 (75W); FHFL
Slot 4: PCIe 3.0 x16 (x8 wired) (25W); FHFL (requires second processor)
Slot 5: PCIe 3.0 x16 (75W); FHFL (requires second processor)
Slot 6: PCIe 3.0 x8 (x4 wired) (25W); FHFL
Front: Two USB ports (one USB 3.0, one USB 2.0 port
Rear: Four USB ports (four USB 2.0, two USB 3.0), one DB-15 video, one RJ-45
systems management, two RJ-45 GbE network ports, optional serial port.
Internal: One internal USB 3.0 port for RDX drive
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