So how much do you run your cluster memory usage? Currently we are at 50% usage but still adding VM's. My boss wants to run this to 100% and doesn't understand why I keep telling him this is a bad idea. I am trying to keep it at 2/3 to 3/4 usage of capacity. Am I right or wrong on this? I am doing a bad job of explaining this to my boss who doesn't seem to believe me so do you guys have any resources that can help me explain this? Right now we are running application servers and no core functions but we are looking to migrate our DHCP servers. We have 1.1 TB of memory capacity running at 51% usage. CPU usage is not a problem running at about 12%. Storage is also fine. We are running 6x Dell 740XC if that helps.

As a general rule of thumb, you never want to run over your HA limit on RAM and especially storage. You cannot over commit RAM anyways on AHV (For Now), but you can on ESXi. Basically you obey the N+1 mindset. If you have node awareness, you'll never want to provision more than your HA can handle of losing a single node. If block awareness, you'll never want to over provision over a full blocks worth of resources on memory and especially storage and so on and so forth. On any storage platform, once you exceed 80% storage utilization, it generally starts impacting IO capabilities. Some platforms "swear" you can go up to 90%, but you should make it a goal to never reach that high.I would spin it as "To ensure we maintain optimal performance, as well as ensuring we have resources available in the event of hardware failure, this is why we can't provision to complete capacity." He's likely getting pressure to use the resources paid for, but I would document out why what he's wanting is a bad idea and work with support of the reference documentation for best practices. You'll likely find a lot in the portal, and if all else fails online too.

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问题解答

集群内存用法

三年前
2019年6月4日
1回复
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galad2003
冒险者
5个回复

集群内存用量多高目前使用率为50%,但仍添加VM老板想百分之百运算不理解为什么我一直告诉他这是个坏主意正努力保持2/3到3/4使用容量我对错吗

我做错事解释我的老板谁似乎不相信我所以你们有资源可以帮助我解释

当前我们正在运行应用服务器,没有核心功能,但我们正寻找迁移我们的DHCP服务器1.1存储容量运行51%CPU使用率约12%不成问题存储器也很好6x740XC

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.........

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\r\n right现在我们正在运行应用服务器,没有核心功能,但我们正寻找迁移我们的DHCP服务器1.1存储容量运行51%CPU使用率约12%不成问题存储器也很好We are running 6x Dell 740XC if that helps.","quoteUsername":"galad2003","translations":{"Common":{"like":"Like","unlike":"Unlike"},"Forum":{"Quote":"Quote","Share":"Share"}}}">

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dubuque
外乘者
63回复
三年前
2019年6月4日

泛指法则从不超出HA内存限值无法超载内存 AHV(For Now),但ESXi可用基本听从N+1思想如果你有节点认知度, 你永远不会想提供比HA所能处理丢失单节点更多阻塞感知,你永远不会想超量提供完全块值资源内存,特别是存储存储平台一旦超过80%存储用量通常会开始影响IO容量某些平台可达90%,但目标应该是永不达此高

换成“确保保持最优性能,以及确保硬件失效时资源可用性,正因如此,我们不能提供完全能力。”他可能会因压力而使用支付的资源,但我会记录为什么他所期望的是坏点子并支持参考文件最佳做法门上可能发现很多信息万一网络上其他都失败

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