UnRaid解决sas硬盘无法休眠的问题
安装Spin Down SAS Drives插件即可，装完以后不需要配置。亲测有效。
介绍：
Spin Down SAS Drives
A plugin to spin down idle SAS drives, according to Unraid configured spin-down schedule.
This plugin assists the Unraid built-in disk spin down mechanism, by adding functionality supporting SAS drives (Unraid OS natively supports spinning down SATA drives). For Unraid version 6.9.0 and up, it enhances the built-in sdspin script with SAS support. For Unraid versions up until 6.8.3, it installs two main components: One is a hook triggered whenever Unraid decides to spin down a drive; if the drive is SAS, it spins it down (STANDBY, powermode 3). This is done via an rsyslog hook, following Unraid’s log messages of spinning down a drive. The second part is a wrapper for “smartctl”, working around its deficiency of not supporting the “-n standby” flag for non-ATA drives (to be fixed in version 7.2).
降速SAS驱动器
根据Unraid配置的降速时间表，降速闲置SAS驱动器的插件。
该插件通过添加支持SAS驱动器的功能（Unraid OS本机支持旋转SATA驱动器），帮助Unraid内置磁盘降速机制。对于Unraid 6.9.0及更高版本，它通过SAS支持增强了内置的sdspin脚本。对于6.8.3之前的Unraid版本，它安装了两个主要组件：一个是Unraid决定关闭驱动器时触发的挂钩；如果驱动器是SAS，它会将其向下旋转（待机，电源模式3）。这是通过rsyslog钩子完成的，它跟踪Unraid的磁盘旋转日志消息。第二部分是“smartctl”的包装，解决了它不支持非ATA驱动器的“-n standby”标志的缺陷（将在7.2版中修复）。
插件地址：https://raw.githubusercontent.com/doron1/unraid-sas-spindown/master/sas-spindown.plg