Which of the below disk types is not backed by Solid State Drives (SSD)?
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A. B. C. D.Correct Answer: A.
Option A is correct.
Standard persistent disks (pd-standard) are backed by HDD (standard Hard Disk Drive)
Hence, this option is Correct.
Option B is incorrect.
Balanced persistent disks (pd-balanced) are backed by solid-state drives (SSD).
Option C is incorrect.
SSD persistent disks (pd-ssd) are backed by solid-state drives (SSD).
Option D is incorrect.
Extreme persistent disks (pd-extreme) are backed by solid-state drives (SSD).
https://cloud.google.com/compute/docs/disks#disk-typesOf the disk types listed, the only one not backed by Solid State Drives (SSD) is Standard persistent disks (pd-standard).
Persistent disks are block storage devices that can be attached to virtual machine instances in the Google Cloud Platform (GCP). They provide durable and high-performance storage that can be used to store data persistently even after the instances are terminated.
There are several types of persistent disks in GCP, and they are designed to meet different performance and cost requirements. The four types of persistent disks available in GCP are:
Standard persistent disks (pd-standard): This is the original persistent disk type and is suitable for workloads with low I/O requirements. The disks are backed by spinning hard disk drives (HDDs).
Balanced persistent disks (pd-balanced): This disk type is designed for workloads that require a balance between performance and cost. The disks are backed by a mixture of HDDs and SSDs.
SSD persistent disks (pd-ssd): This disk type is designed for workloads that require high I/O performance. The disks are backed by SSDs, which provide faster read and write speeds than HDDs.
Extreme persistent disks (pd-extreme): This disk type is designed for the most demanding workloads that require the highest I/O performance. The disks are backed by NVMe SSDs, which provide even faster read and write speeds than traditional SSDs.
Therefore, the correct answer is A. Standard persistent disks (pd-standard) are not backed by Solid State Drives (SSD).