Lenovo ThinkServer Storage SA120 (English) User Guide and Hardware Maintenance - Page 19

Power supply, System fans, Internal drives, Attention, Input/Output I/O features

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Power supply Your storage array comes with one or two 550-watt hot-swap power supplies. System fans Your storage array comes with two fan assemblies. Internal drives Internal drives are devices that your storage array uses to read and store data. Your storage array supports the following types of internal drives: • In the front: up to twelve 3.5-inch hot-swap Serial Attached SCSI (SAS) hard disk drives (SCSI is the acronym for Small Computer System Interface) • In the rear: up to four 2.5-inch hot-swap Serial Advanced Technology Attachment (SATA) solid-state drives Attention: To avoid damage to your storage array, ensure that you install the correct type of drive into a drive bay. To locate the internal drives or drive bays, see "Storage array components" on page 12. Input/Output (I/O) features Your storage array comes with one or two I/O modules supporting in-band and out-of-band management. For detailed information, see "Rear view of the storage array" on page 10. Status light-emitting diodes (LEDs) Your storage array comes with various status LEDs on the front and rear panels. For the location and status information about the status LEDs, refer to the related topics in "LEDs on the front panel" on page 15 and "Rear view of the storage array" on page 10. Connecting modes Your storage array can be connected to a server in two modes: basic mode and cascading mode. In cascading mode, up to eight storage arrays can be connected to the same server. See "Connecting the storage arrays" on page 19. Note: To connect storage arrays to a server, the target server must have a RAID card or a Host Bus Adapter installed. Tool-less design The tool-less design of the storage array enables you to install, remove, or replace hardware components easily . See Chapter 6 "Installing, removing, or replacing hardware" on page 31. Chapter 2. Product overview 7

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Power supply
Yourstoragearraycomeswithoneortwo550-watthot-swappowersupplies.
System fans
Yourstoragearraycomeswithtwofanassemblies.
Internal drives
Internaldrivesaredevicesthatyourstoragearrayusestoreadandstoredata.Yourstoragearraysupports
thefollowingtypesofinternaldrives:
•Inthefront:uptotwelve3.5-inchhot-swapSerialAttachedSCSI(SAS)harddiskdrives(SCSIisthe
acronymforSmallComputerSystemInterface)
•Intherear:uptofour2.5-inchhot-swapSerialAdvancedTechnologyAttachment(SATA)solid-statedrives
Attention:
Toavoiddamagetoyourstoragearray,ensurethatyouinstallthecorrecttypeofdriveinto
adrivebay.
Tolocatetheinternaldrivesordrivebays,see“Storagearraycomponents”onpage12.
Input/Output (I/O) features
YourstoragearraycomeswithoneortwoI/Omodulessupportingin-bandandout-of-bandmanagement.
Fordetailedinformation,see“Rearviewofthestoragearray”onpage10.
Status light-emitting diodes (LEDs)
YourstoragearraycomeswithvariousstatusLEDsonthefrontandrearpanels.Forthelocationandstatus
informationaboutthestatusLEDs,refertotherelatedtopicsin“LEDsonthefrontpanel”onpage15
and“Rearviewofthestoragearray”onpage10.
Connecting modes
Yourstoragearraycanbeconnectedtoaserverintwomodes:basicmodeandcascadingmode.In
cascadingmode,uptoeightstoragearrayscanbeconnectedtothesameserver.See“Connectingthe
storagearrays”onpage19.
Note:
Toconnectstoragearraystoaserver,thetargetservermusthaveaRAIDcardoraHostBus
Adapterinstalled.
Tool-less design
Thetool-lessdesignofthestoragearrayenablesyoutoinstall,remove,orreplacehardwarecomponents
easily.SeeChapter6“Installing,removing,orreplacinghardware”onpage31.
Chapter 2
.
Product overview
7