Trademarks
LENOVO and THINKSYSTEM are trademarks of Lenovo.
All other trademarks are the property of their respective owners.
Important notes
Processor speed indicates the internal clock speed of the processor; other factors also affect application 
performance.
CD or DVD drive speed is the variable read rate. Actual speeds vary and are often less than the possible 
maximum.
When referring to processor storage, real and virtual storage, or channel volume, KB stands for 1 024 bytes, 
MB stands for 1 048 576 bytes, and GB stands for 1 073 741 824 bytes.
When referring to hard disk drive capacity or communications volume, MB stands for 1 000 000 bytes, and 
GB stands for 1 000 000 000 bytes. Total user-accessible capacity can vary depending on operating 
environments.
Maximum internal hard disk drive capacities assume the replacement of any standard hard disk drives and 
population of all hard-disk-drive bays with the largest currently supported drives that are available from 
Lenovo.
Maximum memory might require replacement of the standard memory with an optional memory module.
Each solid-state memory cell has an intrinsic, finite number of write cycles that the cell can incur. Therefore, a 
solid-state device has a maximum number of write cycles that it can be subjected to, expressed as total 
bytes written (TBW). A device that has exceeded this limit might fail to respond to system-generated 
commands or might be incapable of being written to. Lenovo is not responsible for replacement of a device 
that has exceeded its maximum guaranteed number of program/erase cycles, as documented in the Official 
Published Specifications for the device.
Lenovo makes no representations or warranties with respect to non-Lenovo products. Support (if any) for the 
non-Lenovo products is provided by the third party, not Lenovo.
Some software might differ from its retail version (if available) and might not include user manuals or all 
program functionality.
Electronic emission notices
When you attach a monitor to the equipment, you must use the designated monitor cable and any 
interference suppression devices that are supplied with the monitor.
Additional electronic emissions notices are available at:
http://thinksystem.lenovofiles.com/help/index.jsp
228 ThinkSystem SR645 V3 User Guide