Lenovo System x3850 X6 Installation And Service Manual page 274

Attention: To ensure proper operation, replace a failed hot-swap fan within 30 seconds.
Step 4. If you are instructed to return the fan, follow all of the packaging instructions, and use any
packaging materials for shipping that are supplied to you.
Replacing a hot-swap fan assembly
Use this information for an overview of the fans and instructions on how to install a hot-swap fan in the
server.
The server supports up to 10 fan packs with dual-motor, counter-rotating, speed-controlled hot-swap
cooling fans (two fans in each fan-pack for a total of 20 fans).
Notes:
• The fan-packs on the compute books and the Standard I/O book are not interchangeable. The fan packs
have text printed on the front of the fan above the fan handle that indicates which book the fan-pack
should be installed in. For example, the fan-pack for a compute books might have the text "Top -
Compute Book Only". The fan-pack for a Standard I/O book might have the text "Top - Standard I/O Book
Only".
• Fan-packs 1 through 8 are on the compute books (two fans per fan-pack). The server supports up to four
compute books.
• Fan-packs 9 and 10 are on the Standard I/O book.
The following table shows the fan zones, fan-pack number, and the components that are cooled by the fans.
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System x3850 X6 and x3950 X6 Installation and Service Guide
Fan-pack