The JBOD (Just a Bunch of Disks) storage policy enables each hard drive to be seen separately as one drive. When using a SATA host controller, JBOD should only be used if the SATA host controller provides Port Multiplier (PM) support. If a host is not PM-aware, only a single drive is presented (drive 0). No such limitation if using a USB host connection.
JBOD storage policy is available for a standalone (non-cascaded) ESU2DSATA10 or the top-level node of a cascaded configuration, but not for subordinate nodes. Even though you can use the rotary switch to select JBOD mode for any node in a cascaded configuration, only the first JBOD volume of any subordinate node is detected by your host. Therefore, selecting JBOD mode for any subordinate node is not recommended.
In a JBOD configuration, the ESU2DSATA10 directly exposes each physical drive.
以上是原廠說明
所以看來要能用 E-SATA 接的話要有支援 Port Multiplier (PM)
！
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