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Exam 3V0-21.21 topic 1 question 62 discussion

Actual exam question from VMware's 3V0-21.21
Question #: 62
Topic #: 1
[All 3V0-21.21 Questions]

An architect is planning the physical server configuration for a vSAN-based infrastructure.
Which operations mode should a RAID controller support to minimize potential server downtime during physical disk failures?

  • A. RAID controller with Passthru mode
  • B. RAID controller with RAID 5 mode
  • C. RAID controller with RAID 10 mode
  • D. RAID controller with RAID 6 mode
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Suggested Answer: D 🗳️


Chosen Answer:
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Highly Voted 1 year, 2 months ago
A. RAID controller with Passthru mode Hardware Requirements for vSAN One SAS or SATA host bus adapter (HBA), or a RAID controller that is in passthrough mode or RAID 0 mode.
upvoted 14 times
Most Recent 1 month, 3 weeks ago
Correct answer is A
upvoted 2 times
2 months, 1 week ago
Selected Answer: A
A With RAID-0, one will have to reboot the host to replace the failed disk. With passthru, disks can be hot replaced. VMware recommend to use passthru if available. Ref: https://core.vmware.com/resource/vmware-vsan-design-guide#sec6843-sub14
upvoted 3 times
4 months, 1 week ago
B. RAID controller with RAID 5 mode
upvoted 1 times
1 year, 2 months ago
Table 3-1. Storage Device Requirements for vSAN Hosts One SAS or SATA host bus adapter (HBA), or a RAID controller that is in passthrough mode or RAID 0 mode. To avoid issues, consider these points when the same storage controller is backing both vSAN and non-vSAN disks: Do not mix the controller mode for vSAN and non-vSAN disks to avoid handling the disks inconsistently, which can negatively impact vSAN operation. If the vSAN disks are in RAID mode, the non-vSAN disks must also be in RAID mode. When you use non-vSAN disks for VMFS, use the VMFS datastore only for scratch, logging, and core dumps. Do not run virtual machines from a disk or RAID group that shares its controller with vSAN disks or RAID groups. Do not passthrough non-vSAN disks to virtual machine guests as Raw Device Mappings (RDMs). For more information, see https://kb.vmware.com/s/article/2129050. To learn about controller supported features, such as passthrough and RAID, refer to the vSAN HCL: https://www.vmware.com/ resources/compatibility/search.php?deviceCategory=vsan
upvoted 2 times
Community vote distribution
A (35%)
C (25%)
B (20%)
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