Google Cloud Platform 也開始玩 Reserved Instances 的想法了 (Committed use discounts)

看到 Google Cloud PlatformGoogle Cloud Engine 也開始提供 RI 的想法了:「Committed use discounts」。

本來就有 Sustained use discounts,當你用到一定的量時就會自動折扣,不需要人工介入,不過對於 7x24 開機的 instance 來說,能得到的折扣還是比不上 AWS 的 RI。

這次 Committed use discounts 折扣的方式跟 Amazon EC2 類似,一樣是一年與三年。計價方式不同的原因是因為 GCE 提供 custom type,使用者可以自己選 vCPU 與 Memory,所以折扣的方式也是圍繞在這兩個選擇上規劃。

不過小台機器是不提供折扣的,這點就不像 AWS 上所有種類的機器都可以買 RI:

You can only use committed use discounts for predefined machine types and custom machine types. Small machine types, such as f1-micro and g1-small, are not eligible for committed use discounts.

目前是 beta:

This is a Beta release of Committed Use Discounts. This feature is not covered by any SLA or deprecation policy and may be subject to backward-incompatible changes.

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