vcenter6.5 创建虚拟机失败

我学习作业在物理主机上安装了一块SSD，并且在虚拟闪存→虚拟闪存资源管理中将他设置为虚拟闪存，在esxi6.5中也能识别到虚拟闪存。然后回到Vcenter6.5创建虚拟机，在虚拟机配置，硬盘配置时只要设置了虚拟flash read cache就会出现“找不到引用的对象或项目。”报错，只要不设置虚拟flash read cache就完全正常。请问我还要设置什么地方？或者有没有相关的学习教程。

然后我发现了一个问题，可能是我先前在esxi6.5的web管理页面的，高级设置 中设置了vflash相关键值导致在vcenter中的 虚拟闪存 → 虚拟闪存主机交换缓存配置 中无法设置，每次点击编辑输入任意容量保存之后都会跳出如下提示：

Type Error: Error #1009

  at com.vmware.vsphere.client.views.storage.vFlash::EditCacheConfigFormMediator/onSubmit()

  at flash.events::EventDispatcher/dispatchEvent()

  at mx.core::UIComponent/dispatchEvent()

  at com.vmware.ui.dialog::SinglePageDialog/onDialogOkClicked()

  at flash.events::EventDispatcher/dispatchEvent()

  at com.vmware.widgets.controls::Wizard/performFinish()

  at DialogWizard/readyToCommit()

  at DialogWizard/commitInternal()

  at DialogWizard/doAllPagesCommitInternal()

  at DialogWizard/doAllPagesCommit()

  at DialogWizard/performFinish()

  at Function/<anonymous>()

  at com.vmware.widgets.controls::Wizard/onPageCommited()

  at com.vmware.vsphere.client.views.storage.vFlash::EditCacheConfigFormMediator/onPageCommit()

  at com.vmware.widgets.controls::Wizard/commitCurrentPage()

  at com.vmware.widgets.controls::Wizard/onFinishButtonClicked()

  at DialogWizard/onCommitFunctionComplete()

  at DialogWizard/commitInternal()

  at DialogWizard/onOkButtonClick()

请问我现在该怎么修改？