弹性裸金属服务器的八大特征

在这里我们定义的“弹性裸金属服务器”是一个“新物种”,它强调的是“弹性”,也就是通过技术创新,使得传统裸金属服务能够做到和虚拟机一致的使用体验和业务敏捷。

所以,“弹性裸金属服务器”应该具备如下八个关键特征:

弹性裸金属服务器的八大特征

特征一:分钟级交付

云服务快速弹性伸缩,是IaaS云服务的核心特征。一般来说,虚拟机服务可以做到分钟级业务弹性伸缩。

2017年10月鹿晗关晓彤恋情引发微博瘫痪,此类业务特征是:业务流量瞬时暴涨,需要后台必须具备分钟级业务弹性伸缩能力。此种情况下,弹性裸金属服务器必须能够在分钟级别快速交付,才能应对突如其来的瞬时暴涨业务流量。

特征二:兼容VPC/SLB/RDS等云平台全业务

对于已经上云的客户来说,涉及到保护当前投资等考虑,完全兼容现有云平台业务至关重要。以VPC网络为例,弹性裸金属服务器必须和虚拟机保持100%一致的虚拟化网络接入能力和安全隔离能力。

特征三:兼容虚拟机镜像系统

兼容虚拟机镜像,可以使得弹性物理机和虚拟机之间平缓迁移,提供业务部署弹性。

特征四:云盘启动和数据云盘动态热插拔

云盘启动是弹性物理机的核心特征。如果无法支持云盘启动,则必须依赖传统PXE装机。PXE装机则无法做到分钟级别业务交付,控制台镜像密码修复等关键功能。

数据云盘动态热插拔,是弹性存储服务关键特征,保证客户对存储性能和容量需求能够pay-as-you-go

特征五:和虚拟机一致的VNC、web控制台、openAPI用户体验

保持和虚拟机web H5 VNC,web控制台等方面一致的用户体验,能够极大降低用户的学习成本。保持和虚拟机一致的openAPI接口,才能够保护客户既有资源管理系统的投资。

特征六:宕机迁移恢复

宕机自动迁移恢复,可以极大降低IaaS基础设施故障恢复时间。当虚拟机或者弹性物理机出现软硬件故障时,运维管控系统能够自动迁移实例,最小化降低客户业务中断。

而宕机迁移实现则依赖弹性物理机本地“无状态”,其实现依赖于BIOS配置可迁移、云盘启动、数据云盘等关键技术。

特征七:免人肉自动化运维

传统物理机的部署一般需要3个工作日,此种模式进行极致优化,也需要至少4小时的交付时长。而免人肉自动化运维是IaaS云服务的核心特征。

特征八:物理机的完整特性和性能、以及高隔离性和高安全性

虚拟机同样具备上述七大特征,而弹性裸金属服务器在兼具上述七大优势的同时,必须虚拟机不具备的核心竞争力。

文章来源:www.rakbuluo.com/o190

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