350-601 Compute Practice Question
Which THREE components are required to configure a Cisco UCS Direct-attached storage environment using SAS expanders?
⚠ Common exam trap
Cisco often tests the distinction between Direct-attached storage (SAS) and Fabric-attached storage (FCoE/Fibre Channel), so the trap here is assuming that any storage enclosure requires Fabric Interconnect or SAN components, when in fact Direct-attached storage uses only SAS cabling and expanders.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
SAS cables connecting the storage enclosure to the server's storage controller.
In a Cisco UCS Direct-attached storage environment using SAS expanders, SAS cables are required to physically connect the storage enclosure to the server's storage controller (typically an LSI-based SAS HBA). This direct cabling enables the SAS protocol to carry SCSI commands and data between the server and the drives without any intervening network fabric.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
SAS cables connecting the storage enclosure to the server's storage controller.
Why this is correct
Direct SAS cabling is required for connectivity.
- ✓
SAS expanders within the enclosure to connect multiple drives.
Why this is correct
SAS expanders allow daisy-chaining of drives.
- ✓
SAS hard drives installed in the storage enclosure.
Why this is correct
SAS drives are the storage medium.
- ✗
Fibre Channel over Ethernet (FCoE) uplinks from the storage enclosure to the Fabric Interconnect.
Why it's wrong here
SAS uses direct SAS connections, not FCoE.
- ✗
Fibre Channel switch for SAN connectivity.
Why it's wrong here
Direct-attached SAS does not require a SAN.
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