C H A P T E R 4 |
This chapter describes the functionality of a SAS-NEM as it pertains to connecting server and disk modules.
Installation of SAS-NEMs is covered briefly in this manual because a Sun Blade 6000 Disk Module does not work without the presence of a SAS-NEM.
SAS-NEMs are fully described in their own documentation. Refer to the Sun Blade 6000 Disk Module Administration Guide (820-4922) for a complete list of supported SAS-NEMs.
There are various Network Express Modules that can be plugged into the Sun Blade 6000 Modular System chassis. SAS-NEMs are those that contain circuitry to provide multiple SAS connections to disk drives. All Network Express Modules, including SAS-NEMs, plug into the Network Express Module slots on the back of the chassis and are hot-pluggable.
You can insert either one or two SAS-NEMs in the Sun Blade 6000 chassis. If you insert only one, it must go in the lower slot (NEM 0).
Slide the SAS-NEM into the vacant NEM chassis slot until you feel it stop.
FIGURE 4-1 shows how to install a SAS-NEM.
Complete the installation by closing the ejector levers to secure the SAS-NEM in the chassis.
If a Network Express Module (SAS-NEM) fails, you need to replace it. You can remove and replace a SAS-NEM from a powered-on chassis using a hot-plug operation, as well as from a powered-off chassis.
Caution - Make sure that none of the server blades are actively accessing Ethernet ports or disk drives in a disk module before you remove the SAS-NEM. |
In the rear of the chassis, locate the SAS-NEM that you want to remove.
Press together and hold the ejector buttons on both the right and left ejector levers.
FIGURE 4-2 shows how to remove a SAS-NEM.
To unlatch the SAS-NEM from the chassis, open the ejector levers by extending them outward.
Holding the opened ejector levers, pull the SAS-NEM toward you until you can pull the rest of the module out by hand.
Caution - If the chassis is powered on and you are not replacing the SAS-NEM within 60 seconds, install a NEM filler panel to ensure proper system operation. |
If a SAS-NEM fails it must be replaced immediately. You cannot simply replace the failed SAS-NEM with a new one. You must follow the procedure as described in the SAS-NEM documentation.
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