Lenovo ThinkServer Storage SA120 (English) User Guide and Hardware Maintenance - Page 23

Power supply, inthistopic., Thepower-supply-statusLED, statusofthepowersupply.

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Note: Depending on the model, your storage array might look slightly different from the following illustration in this topic. Figure 4. Rear view of the storage array 1 Power supply 1 3 2.5-inch drive bay (bay 12) 5 Rear I/O module 1 7 2.5-inch drive bay (bay 14) 9 Fan assembly 2 2 Fan assembly 1 4 2.5-inch drive bay (bay 13) 6 Rear I/O module 2 (in some models) 8 2.5-inch drive bay (bay 15) 10 Power supply 2 (in some models) 1 10 Power supply The hot-swap power supplies help you avoid significant interruption to the operation of the storage array when a power supply fails. You can purchase a power supply option from Lenovo and install the power supply to provide power redundancy without turning off the storage array. The power-supply-status LED A as shown in the following illustration helps you determine the current status of the power supply. Figure 5. Power-supply-status LED Status On On Blinking Color Amber Green Amber Blinking Green Off None Description The power supply has critical errors. The power supply is working normally. The power supply is working, but has potential errors. The power supply is disconnected from the ac power source. The other power supply provides power for the whole storage array. The power supplies are not connected to the ac power source. Chapter 2. Product overview 11

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Note:
Dependingonthemodel,yourstoragearraymightlookslightlydifferentfromthefollowingillustration
inthistopic.
Figure 4. Rear view of the storage array
1
Powersupply1
2
Fanassembly1
3
2.5-inchdrivebay(bay12)
4
2.5-inchdrivebay(bay13)
5
RearI/Omodule1
6
RearI/Omodule2(insomemodels)
7
2.5-inchdrivebay(bay14)
8
2.5-inchdrivebay(bay15)
9
Fanassembly2
10
Powersupply2(insomemodels)
1
10
Power supply
Thehot-swappowersupplieshelpyouavoidsignificantinterruptiontotheoperationofthestoragearray
whenapowersupplyfails.YoucanpurchaseapowersupplyoptionfromLenovoandinstallthepower
supplytoprovidepowerredundancywithoutturningoffthestoragearray.
Thepower-supply-statusLED
A
asshowninthefollowingillustrationhelpsyoudeterminethecurrent
statusofthepowersupply.
Figure5. Power-supply-status LED
Status
Color
Description
On
Amber
Thepowersupplyhascriticalerrors.
On
Green
Thepowersupplyisworkingnormally.
Blinking
Amber
Thepowersupplyisworking,buthaspotentialerrors.
Blinking
Green
Thepowersupplyisdisconnectedfromtheacpowersource.
Theotherpowersupplyprovidespowerforthewholestorage
array.
Off
None
Thepowersuppliesarenotconnectedtotheacpowersource.
Chapter 2
.
Product overview
11