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Zorluk: OrtaHigh-Performing and Scalable Storage Solutions

An enterprise is running a mission-critical transactional database on a cluster of Amazon EC2 instances in a single Availability Zone. The database requires shared block storage that supports SCSI-3 persistent reservations for failover clustering, must sustain a peak workload of 70,00070,000 IOPS, and requires sub-millisecond latency. Which storage configurations will meet these performance and clustering requirements? (Select TWO.)

  1. Provision an Amazon EBS io2 volume, enable Multi-Attach, and attach it to the EC2 instances.Cevap
  2. Provision an Amazon FSx for NetApp ONTAP file system and configure iSCSI targets to mount to the EC2 instances.Cevap
  3. C
    Provision an Amazon EBS gp3 volume, enable Multi-Attach, and attach it to the EC2 instances.
  4. D
    Provision an Amazon EFS file system, configure Elastic throughput mode, and mount it to the EC2 instances using the NFSv4 protocol.
  5. E
    Provision an Amazon EBS io2 volume, configure a Software RAID 0 array across the EC2 instances, and mount it as a shared cluster volume.

Cevap

The correct configurations are provisioning an Amazon EBS io2 volume with Multi-Attach enabled, and provisioning an Amazon FSx for NetApp ONTAP file system using iSCSI mounts.
The correct configurations are using Amazon EBS io2 with Multi-Attach enabled and Amazon FSx for NetApp ONTAP via iSCSI. Amazon EBS io2 supports Multi-Attach and SCSI-3 persistent reservations on Nitro-based EC2 instances while providing up to 256,000256,000 IOPS and sub-millisecond latency. Amazon FSx for NetApp ONTAP provides high-performance shared storage that supports block storage protocols via iSCSI, including SCSI-3 persistent reservations, and delivers sub-millisecond latency.

Adım Adım Çözüm

1
Analyze database clustering requirements.
The system requires shared block storage, SCSI-3 persistent reservations, a peak of 70,00070,000 IOPS, and sub-millisecond latency.
This establishes the technical constraints for volume sharing, protocol compatibility, and performance.
2
Evaluate Amazon EBS volumes.
EBS io2 (specifically io2 Block Express) supports Multi-Attach, SCSI-3 persistent reservations, and up to 256,000256,000 IOPS with sub-millisecond latency. EBS gp3 is limited to 16,00016,000 IOPS and does not support Multi-Attach or SCSI-3 persistent reservations.
This identifies EBS io2 as a viable option while ruling out EBS gp3 due to performance caps and lack of clustering features.
3
Evaluate shared file system options.
Amazon EFS uses NFSv4 (file-level) and does not support SCSI-3 persistent reservations (block-level). Amazon FSx for NetApp ONTAP supports block-level access via iSCSI, including SCSI-3 persistent reservations, and delivers sub-millisecond latency.
This identifies FSx for NetApp ONTAP as the second viable option and eliminates EFS as it is file-level storage.

Anahtar Kavram

Selecting high-performance shared block storage that supports SCSI-3 persistent reservations for database clustering.
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High-Performing and Scalable Storage Solutions

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