Lenovo ThinkServer RD330 MegaRAID SAS Software User Guide - Page 218
FastPath-related Options
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Chapter 5: MegaRAID Command Tool | FastPath-related Options MegaRAID SAS Software User Guide 5.20.13 Displays the Read and Write Configuration File NOTE: MSM or OEM applications must be running to flush file system buffers and take snapshot when snapshot schedule expires. The system does not support snapshot creation through BMC (sideband) and snapshot on volumes, which are used for VM creation under virtualized environment. To flush the file system buffers, you should interface with hypervisor. Use the command in the following table to display the read and write configuration file. Table 122: Displays the Read and Write Configuration File Convention Description MegaSCU -AdpCfgPage -read|-write pagetype -f -aN -AdpCfgPage Reads / writes the configuration file, parses it and updates the SAS firmware's Manufacturing Configuration Page. Parameters: -read : gets the configuration page from firmware and fills the page details into a file. -write : sends the user specified file to firmware to modify the configuration page. : Can have a value of zero or one : for NVRAM : for current : string for page type. For manufacturing page, the value is MAN. Convention: -aN: N specifies the adapter number for the command. Exit Code: 0x00 5.21 FastPath-related Options The command in this section is used to display information about the FastPath option. MegaRAID FastPath is a high-performance IO accelerator for CacheCade - SSD Caching software drive groups connected to a MegaRAID controller card. CacheCade - SSD Caching software has a read performance advantage over HDDs and use less power. This feature dramatically boosts storage subsystem bandwidth and overall transactional application performance when used with a 6-Gb/s MegaRAID SATA+SAS controller. The FastPath feature supports full optimization of CacheCade - SSD Caching software and hard disk drive (HDD) virtual drive groups to deliver a three-fold improvement in read and write IOPS compared to MegaRAID controllers not utilizing FastPath technology. Also, FastPath software is faster and more cost-effective than current flash-based adapter card solutions. Page 218