Chelsio T5 Installation And User Manual page 38

Chapter 5. Software/Driver Configuration and Fine-tuning
5.7.1. RAM Disk Details
For the built-in RAM disk:
The minimum size of the RAM disk is 1 Megabyte (MB) and the maximum is limited by
system memory.
To use a RAM disk with a Windows Initiator, it is recommended to set the size >= 16MB.
To configure an ramdisk specify
TargetDevice=<name>,MEM,size=xMB
<name>
Where:
x
target:
#<snip>
# 16 Megabytes RAM Disk named ramdisk1
TargetDevice=ramdisk1,MEM,size=16MB
#<snip>
Chelsio's Inbuilt RAMDISK cannot be used for SCST pass-through.
Note
5.7.2. FILE Mode Storage Device Details
The FILE mode storage device is the most common and versatile mode to access the actual
storage attached to the target system:
The FILE mode can accommodate both block devices and virtual block devices.
The device is accessed in the exclusive mode. The device should not be accessed (or
active) in any way on the target system.
Each device should be used for one and only one iSCSI target.
"SYNC" can be used with FILE mode to make sure the data is flushed to the storage device
before the Target responds back to the Initiator.
To configure a FILE storage device specify
TargetDevice=<path to the storage device>[,FILE][,SYNC]
Chelsio T5 iSCSI PDU Offload Target with SCST support for Linux
MEM
as the device mode:
Is a unique name given to the RAM disk. This name identifies this
particular ramdisk. If multiple RAM disks are configured for the same
target, the name
Is the size of the RAM disk in MB. It's an integer between (1-max),
where max is limited by system memory. If this value is not specified, the
default value is 16 MB.
FILE
must be unique
as the device mode:
for each RAM Disk.
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