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PARAMETER
num_targets
old_device_reset
sg_tablesize
sgl_page_size
use_tm_completions
use_transport_layer
use_multiqueue
Adapter Management
On VMware ESX/ESXi you can identify and manage ATTO adapters using the VMware vSphere Client, or the
Service Console. On ESXi, the Service Console is referred to as Local Tech Support Mode.
vSphere Client
With VMware vSphere Client, you can identify ATTO
adapters on a VMware ESX/ESXi system, and view
the attached storage devices.
1
Start vSphere Client from your local workstation
and select the host containing one or more
ATTO adapters.
2
Click the Configuration tab, and then select
Storage adapters under Hardware in the left
pane.
3
A list of all storage adapters in the system is
displayed. The Model, Identifier (SAS address)
and Targets are shown for each adapter
channel.
Service Console
Using the Service Console, information about each
adapter channel can be found in the /proc/scsi
filesystem, under /proc/scsi/<driver name>.
To view details on a specific adapter channel, run the
following command:
iv ATTO Technology Inc. ATTO ExpressSAS Host & RAID Adapter Installation and Operation Manual
DESCRIPTION
Maximum number of target devices. Default is 256.
Use the old device reset method. Default is 0 (use
new method).
Maximum number of entries in a scatter/gather
table. A value of 255 means that the S/G table be
any size. Default is 255.
Scatter/Gather List page size in number of S/G
entries. Default is 128.
Wait for task management commands to complete
before returning from handler. Default is 1
(enabled).
Attached to the SCSI transport layer. Default is 1
(enabled).
Distributes I/O across queues based on CPU
affinity. This may result in reduced CPU cost per
I/O. Default is 0 (disabled).
# cat /proc/scsi/<driver name>/<channel>
This command displays the following information:
•
Adapter type
•
Driver, BIOS and Firmware versions
•
Driver Parameters
•
Adapter Model and Identifier (WWN or SAS
address)
•
Virtual Port Information
•
Discovered Targets
•
Driver Statistics
A sample output is shown below:
~ # cat /proc/scsi/esas2hba/6
ATTO ExpressSAS 6Gb HBA
Driver version 1.60b1
Flash version 09/27/2011
Firmware version 1.16.16
Copyright 2001-2011
http://www.attotech.com
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