Internal Storage; Backplanes And Drive Bays - Lenovo ThinkSystem SR860 Product Manual

Internal storage

The server can support up to 16x 2.5-inch drives, SAS, SATA or NVMe, depending on the selected
backplane configuration. You can mix drives in the same server, but not in the same array. Drives are all
installed from the front of the server. The server also supports one or two M.2 drives, installed in an M.2
adapter.
In this section:

Backplanes and drive bays

Adapters and cabling
Field upgrades
M.2 drives
SED encryption key management with ISKLM
Backplanes and drive bays
The SR860 supports various internal storage configurations based on two different backplanes:
8-drive SAS/SATA backplane for 8x 2.5-inch SAS or SATA drives
8-drive SAS/SATA+AnyBay backplane for either:
8x 2.5-inch SAS or SATA drives
4x 2.5-inch SAS or SATA drives + 4x 2.5-inch U.2 (NVMe) drives
For configure-to-order (CTO) configurations, ordering information for the backplanes is in the following
table.
Table 7. Backplane ordering
Part number Feature code
None* AUR5
None* AURA
* Backplanes are configure-to-order (CTO) only; however, upgrade kits are available that include
backplanes, as described in the
Regular 2.5-inch SAS/SATA drive bays support only SAS or SATA drives, however the Lenovo AnyBay
drive bay design allows a choice of SATA, SAS or NVMe drives. This design enables the flexibility to
configure some of the bays with high-performance PCIe SSDs and still use the remaining bays for high-
capacity HDDs, which is the ideal solution for storage tiering.
Backplane connections are as follows:
The 8-drive SAS/SATA backplane has two SAS/SATA connectors and connects to a supported
RAID controller or SAS HBA.
The 8-drive SAS/SATA+AnyBay backplane has two SAS/SATA connectors and connects to a
supported RAID controller or SAS HBA plus four PCIe connectors to connect to either two PCIe
connectors on the Processor and Memory Expansion Tray (see
on a NVMe Switch adapter installed in a PCIe slot.
Five drive configurations are possible with these two backplanes:
1. 8 drive bays, all SAS/SATA
2. 8 drive bays, where 4 are AnyBay
3. 16 drive bays, all SAS/SATA
4. 16 drive bays, where 4 are AnyBay
5. 16 drive bays, where 8 are AnyBay
These configurations are shown in the following figure.
Lenovo ThinkSystem SR860 Server
Description
ThinkSystem 2U 2.5" AnyBay 8-Bay Backplane Kit
ThinkSystem 2U/Tower 2.5" SATA/SAS 8-Bay Backplane Kit
Field upgrades section below.
Figure 4), or four PCIe connectors
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