Avago Technologies MegaRAID Fast Path Software - Manual (Page 451)

LSI Corporation Confidential | July 2011 Page 451
MegaRAID SAS Software User Guide Chapter 11: Using MegaRAID Advanced Software | FastPath Advanced Software
NOTE: If you select the Force the delete to complete quickly check box to delete the
virtual drive, the data is not flushed before deleting the virtual drive. In this scenario, if
you create this virtual drive after deleting it, there will be no data available.
11.5 FastPath Advanced
Software
MegaRAID FastPath is a high-performance IO accelerator for the CacheCade 2.0 SSD
Read Caching software drive groups connected to a MegaRAID controller card.
CacheCade2.0 SSD Read Caching software has a read performance advantage over
HDDs and uses less power. This feature dramatically boosts storage subsystem
bandwidth and overall transactional application performance when used with a 6Gb/s
MegaRAID SATA+SAS controller.
The FastPath feature supports full optimization of the CacheCade 2.0 SSD Read Caching
software and hard disk drive (HDD) virtual disk groups to deliver an improvement in
read and write IOPS that is three times greater than MegaRAID controllers not using
FastPath technology. Also, the FastPath advanced software is faster and more
cost-effective than current flash-based adapter card solutions.
11.5.1 Setting FastPath Options Perform the following steps to use the FastPath advanced software:
1. Select the Logical tab on the MegaRAID Storage Manager window for the Logical
view.
2. Select a virtual drive icon in the left frame.
3. Select Virtual Drive >> Set Virtual Drive Properties on the menu bar, as shown in
the following figure.
Figure 318: Set Virtual Drive Properties Menu
The Set Virtual Drive Properties dialog appears. It shows the default settings for the
FastPath advanced software:
— Write Policy: Write Thru