March 2019
Beginner to intermediate
778 pages
34h 20m
English
Because persistent disks are distributed network storage devices, their performance is capped by limitations of the hardware and network. Bottlenecks occur differently for standard and SSD persistent disks. For standard persistent disks, IO performance may be improved by increasing the size of the disk, as bandwidth scales linearly with disk size.
SSD persistent disk IO performance is limited by the network egress caps, which are themselves limited by the number of vCPUs on a Compute Engine VM. This means that increasing the VM's vCPU count is a valid method to improve the performance of SSD persistent disks.
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