Avamar：Exchange VSS 插件备份失败并显示ACCESS_VIOLATION错误

Exchange DAG 备份可能会失败，并显示类似于以下内容的错误：
 

015/08/09-23:07:27.17499 [checksg]  ERROR: <0378> threadimpl::runthread() - Windows structured exception ACCESS_VIOLATION in threadID 12068
2015-08-09 18:07:27 avexvss Warning <0378>: threadimpl::runthread() - Windows structured exception ACCESS_VIOLATION in threadID 12068
2015/08/09-23:07:27.19099 [checksg]  ERROR: <5372> 0: RtlDeNormalizeProcessParams()+0x574 [0x7752ada4]
2015/08/09-23:07:27.19099 [checksg]  ERROR: <5372> 1: RtlDeNormalizeProcessParams()+0x4a4 [0x7752acd4]
2015/08/09-23:07:27.19099 [checksg]  ERROR: <5372> 2: OPENSSL_Applink()+0x16db1a [0x3f3bdc0a]
2015/08/09-23:07:27.19099 [checksg]  ERROR: <5372> 3: OPENSSL_Applink()+0x7c6f9 [0x3f2cc7e9]
2015/08/09-23:07:27.19099 [checksg]  ERROR: <5372> 4: CCheckSGFiles::operator=()+0xe877b [0x3f1def8b]
2015/08/09-23:07:27.19099 [checksg]  ERROR: <5372> 5: CCheckSGFiles::operator=()+0xe880f [0x3f1df01f]
2015/08/09-23:07:27.19099 [checksg]  ERROR: <5372> 6: BaseThreadInitThunk()+0xd [0x772d59cd]
2015/08/09-23:07:27.19099 [checksg]  ERROR: <5372> 7: RtlUserThreadStart()+0x21 [0x7750b981]
2015-08-09 18:07:27 avexvss Warning <5372>: 0: RtlDeNormalizeProcessParams()+0x574 [0x7752ada4]
2015-08-09 18:07:27 avexvss Warning <5372>: 1: RtlDeNormalizeProcessParams()+0x4a4 [0x7752acd4]
2015-08-09 18:07:27 avexvss Warning <5372>: 2: OPENSSL_Applink()+0x16db1a [0x3f3bdc0a]
2015-08-09 18:07:27 avexvss Warning <5372>: 3: OPENSSL_Applink()+0x7c6f9 [0x3f2cc7e9]
2015-08-09 18:07:27 avexvss Warning <5372>: 4: CCheckSGFiles::operator=()+0xe877b [0x3f1def8b]
2015-08-09 18:07:27 avexvss Warning <5372>: 5: CCheckSGFiles::operator=()+0xe880f [0x3f1df01f]
2015-08-09 18:07:27 avexvss Warning <5372>: 6: BaseThreadInitThunk()+0xd [0x772d59cd]
2015-08-09 18:07:27 avexvss Warning <5372>: 7: RtlUserThreadStart()+0x21 [0x7750b981]
2015-08-09 18:07:29 avexvss Error <10976>: ERROR: Selected writer 'Microsoft Exchange Writer' reported an error!
   - Status: 1 (VSS_WS_STABLE)
   - Writer Failure code: 0x800423f3 (The writer experienced a transient error. If the backup process is retried, the error may not reoccur).
   - Writer ID: {xxxxxx-xxxx-xxxx-xxxx-xxxxxxx}
   - Instance ID: {xxxx-xxx-xxxx-xxxx-xxxxxxx}
2015-08-09 18:07:29 avexvss Error <19211>: Exception occurred in BackupCompleteEx
2015-08-09 18:07:29 avexvss Error <13077>: Unable to complete backup.

编辑数据集以启用选项“禁用一致性检查（仅当 DAG 中有两个以上的成员时才建议）

”如选项名称所示，仅当这是群集中有两个或更多节点的 Exchange 数据库可用性组 （DAG） 时才启用此选项。  

如果这是独立的 Exchange 服务器，或者想要允许对 Exchange DAG 进行一致性检查，则调整数据集中以下选项的值：

• 暂停之间 #IOs
• 暂停持续时间（毫秒）

这两个参数的默认值均为 1000 毫秒。尝试较低的值（例如 500）并监视备份性能。根据需要向上或向下调整。