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- What: /sys/class/scsi_host/hostX/isci_id
- Date: June 2011
- Contact: Dave Jiang <dave.jiang@intel.com>
- Description:
- This file contains the enumerated host ID for the Intel
- SCU controller. The Intel(R) C600 Series Chipset SATA/SAS
- Storage Control Unit embeds up to two 4-port controllers in
- a single PCI device. The controllers are enumerated in order
- which usually means the lowest number scsi_host corresponds
- with the first controller, but this association is not
- guaranteed. The 'isci_id' attribute unambiguously identifies
- the controller index: '0' for the first controller,
- '1' for the second.
- What: /sys/class/scsi_host/hostX/acciopath_status
- Date: November 2013
- Contact: Stephen M. Cameron <scameron@beardog.cce.hp.com>
- Description: This file contains the current status of the "SSD Smart Path"
- feature of HP Smart Array RAID controllers using the hpsa
- driver. SSD Smart Path, when enabled permits the driver to
- send i/o requests directly to physical devices that are part
- of a logical drive, bypassing the controllers firmware RAID
- stack for a performance advantage when possible. A value of
- '1' indicates the feature is enabled, and the controller may
- use the direct i/o path to physical devices. A value of zero
- means the feature is disabled and the controller may not use
- the direct i/o path to physical devices. This setting is
- controller wide, affecting all configured logical drives on the
- controller. This file is readable and writable.
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