Google Cloud-本地SSD硬件故障? [英] Google Cloud - Local SSD hadware failure?

问题描述

我们正计划使用Google Cloud Local SSD，因为与持久性SSD磁盘相比，我们需要更好的IOPS.我们要使用mdamd(Linux)构建具有4个磁盘的RAID5阵列.我的问题:我们如何使用这些磁盘管理硬件故障?我们无法拔出这些磁盘，因为我们没有对服务器的phisycal访问.如果我们使用mdamd删除磁盘并添加新磁盘，它将解决此问题吗?

We are planning to use Google Cloud Local SSDs, because we need better IOPS than the persistent SSD disk have. We want to build a RAID5 array with 4 disks with mdamd (Linux). My question: how can we manage hardware failure with these disks? We can't unplug these disks, because we don't have phisycal access to the server. If we remove a disk with mdamd and add a new one, will it solve this problem?

推荐答案

本地SSD是

Local SSD is an ephemeral storage space and is not a reliable storage method. For example, should the machine hosting your VM suffer from a hardware failure, your data will be lost and unrecoverable. The same is true if you stop the machine on purpose or accidentally.

RAID没有帮助，因为一旦实例在该计算机上停止运行，您的实例(以及与此相关的Google)将无法访问您存储在本地SSD上的数据.

RAID does not help, as your instance (and Google for that matter) will lose access to the data you stored on Local SSD once the instance stops running on that machine.

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