52 IBM System x3850 X6 and x3950 X6 Planning and Implementation Guide
Maximum internal
storage
x3850 X6:
Up to 12.8 TB with 1.6 TB 2.5" SAS SSDs, or up to 9.6 TB with 1.2 TB 2.5" SAS HDDs, up to
8 TB with 1 TB 2.5" NL SAS/SATA HDDs, up to 12.8 TB with 800 GB 1.8" SATA SSDs.
x3950 X6:
Up to 25.6 TB with 1.6 TB 2.5" SAS SSDs, or up to 19.2 TB with 1.2 TB 2.5" SAS HDDs, up to
16 TB with 1 TB 2.5" NL SAS/SATA HDDs, up to 25.6 TB with 800 GB 1.8" SATA SSDs.
RAID support 12 Gb SAS/SATA RAID 0, 1, 10 with ServeRAID M5210; optional upgrades to RAID 5, 50 are
available (zero-cache; 1 GB non-backed cache; 1 GB or 2 GB flash-backed cache). Upgrade
to RAID 6, 60 available for M5210 with 1 GB or 2 GB upgrades.
Optical & tape bays None. Supports external USB optical drives.
Network interfaces Mezzanine LOM (ML2) slot for dual-port 10 GbE cards with SFP+ or RJ-45 connectors or
quad-port GbE cards with RJ-45 connectors. x3950 X6 has two ML2 slots. Dedicated 1 GbE
port for systems management.
PCI Expansion slots x3850 X6: Up to 11 PCIe slots plus one dedicated Mezzanine LOM slot (12 total).
The slots are as follows:
Two PCIe 3.0 x8 slots for internal RAID controllers (Storage Book)
Two PCIe 3.0 x16 slots (x16-wired), half-length, full-height (Primary I/O Book)
One PCIe 3.0 x16 (x8-wired), half-length, full-height (Primary I/O Book)
One ML2 slot for network adapter (PCIe 3.0 x8) (Primary I/O Book)
Two optional I/O Books, each with three slots, all full height (use of these I/O Books
requires 4 processors). Optional books are hot-swap capable.
x3950 X6: Up to 22 PCIe slots plus two dedicated Mezzanine LOM slots (24 total).
The slots are as follows:
Four PCIe 3.0 x8 slots for internal RAID controllers (Storage Book)
Four PCIe 3.0 x16 slots (x16-wired), half-length, full height (Primary I/O Book)
Two PCIe 3.0 x16 (x8-wired), half-length, full-height (Primary I/O Book)
Two ML2 slots for network adapter (PCIe 3.0 x8) (Primary I/O Book)
Four optional I/O Books, each with three slots, all full height (use of these I/O Books
requires 4 processors). Optional books are hot-swap capable.
Optional I/O Books can be either of these possibilities:
Half-length I/O Book: Two PCIe 3.0 x8 slots, one PCIe 3.0 x16 slot
Full-length I/O Book: Two PCIe 3.0 x16, one PCIe 2.0 x4 slot; two aux power connectors:
150W & 75W; supports 1 double-wide GPU up to 300W
Ports x3850 X6:
Front: Two USB 3.0, one USB 2.0, and one DB-15 video ports. Rear: Four USB 2.0, one DB-15
video, one DB-9 serial, and one 1 GbE RJ-45 systems management. Internal: USB 2.0 port for
embedded hypervisor.
x3950 X6:
Front: Four USB 3.0, two USB 2.0, and one DB-15 video ports. Rear: Eight USB 2.0, one
DB-15 video, one DB-9 serial, and one 1 GbE RJ-45 IMM2 systems management. Internal: two
USB 2.0 port for embedded hypervisor. The second video, IMM2 and internal USB hypervisor
ports are only used when the server is partitioned into two four-socket servers.
Cooling IBM Calibrated Vectored Cooling. Each fan pack includes two counter-rotated dual-motor fans.
x3850 X6:
Up to 10 redundant hot-swap fan packs; five fan zones with N+1 fan redundancy.
x3860 X6:
Up to 20 redundant hot-swap fan packs; ten fan zones with N+1 fan redundancy.
Power supply x3850 X6: Up to four redundant hot-swap power supplies.
x3950 X6: Up to eight redundant hot-swap power supplies.
Power supplies can be either 900 W AC or 1400 W AC power supplies (all 80 PLUS Platinum
certified); -48V 750 W DC power supplies available via CTO. Power supplies cannot be mixed.
Components Specification
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