Table 1. Specifications (continued)
Specification
Description
Drive bays (varies by
model)
Drive bays and drives supported by your server vary by model.
• HDD storage drive bays:
– Up to four 3.5-inch simple-swap disk drives
– On board SATA ports
– Up to eight 3.5-inch simple-swap disk drives
– On board SATA ports
*
– Up to four 3.5-inch hot-swap disk drives
– On board SATA ports
– RAID adapter
– Up to eight 3.5-inch hot-swap disk drives
– On board SATA ports
*
– RAID adapter
– Up to eight 2.5-inch hot-swap disk drives
– On board SATA ports*
– RAID adapter
– Up to sixteen 2.5-inch hot-swap disk drives
– RAID adapter
– Up to hybrid four 3.5-inch and eight 2.5-inch hot-swap disk drives
– RAID adapter
*
When M.2 or optical drive(s) are present , the on-board SATA disk drive support is
limited to six HDD.
Notes:
– Your server supports the installation of 2.5-inch SSDs in a 3.5 inch disk bay
through the use of a conversion kit. See “Install a 2.5-inch SSD into a 3.5-inch
drive bay” on page 61 for details.
– When all eight storage drives have been installed, and the system has been set to
software RAID mode in the UEFI settings, regardless if the disks are configured as
an array or as separate disks, drives 6 and 7 cannot be used to install the Windows
operating system.
– If the M.2 drive has been installed, and the system has been set to software RAID
mode in the UEFI settings, regardless if the disks are configured as an array or as
separate disks, the M.2 drive cannot be used to install the Windows operating
system.
• Optical drive bays
– Two optical drive bays
– Supports up to two optical drives
– When the M.2 drive is present, the optical drive support is limited to one drive.
– Supports up to one tape drive (RDX or LTO)
– Can only be installed in lower optical drive bay
– Maximum support number of optical drive plus tape drive is two pieces.
Notes:
– Follow these steps to install the optical drive and tape drive when the M.2 drive is
present.
1. When the M.2 drive is installed, ensure that SATA port 7 remains
unconnected.
2. Install the optical drive into the upper media bay, Bay 1.
6 ThinkSystem ST250 Setup Guide
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