6.9.1Via Web Interface
To set the LUN’s backup mode via the Web Management Interface:
•Click on the “Management Control Processor” graphic.
•Click on the “LUN Config” tab.
•Select the LUN to edit by clicking on the LUN graphic.
•Click the “Modify LUN” button.
•Select the backup mode from the “Backup Mode” listbox.
•Click the “OK” button.
6.9.2Via Text Management
To set a LUN’s backup mode via the Text Management Interface:
•From the Telnet Main Menu, select “LUN Setup”
•Select “Modify LUN(s)”
•Select LUN (See instructions in Section 6.5 )
•Select “Set backup mode for this LUN”
•Choose the backup mode from the
•Select “Exit to the LUN configuration menu”
•To save the changes once you have completed all LUN configuration, select “Save changes and exit”
Active BackupTM mode (optional)
This ideal mode for most users is only available from Texas Memory Systems. In Active Backup mode, the RamSan uses available internal bandwidth (i.e. performance not utilized by the applications) to constantly backup memory to the disks. The system automatically optimizes this operation to backup the maximum amount of data at any given time without impacting performance. This means that at any one time, most of the data already resides on disk. Upon emergency or shutdown, the unit need only finish the backup that is already nearly completed. Active Backup is an optional feature on the
Datasync mode
DataSync mode provides the highest performance for system operation. In this mode, reads and writes are done only to memory. The disks remain offline during normal operation. If power loss occurs and the shutdown timer reaches zero, or the user requests a shutdown, the system takes the Fibre Channel interfaces offline and synchronizes all data to the internal hard drives.
Mirror mode
This operational mode provides the highest level of data integrity. The system mirrors all write operations to the internal hard drives and memory. The system performs read operations from memory only. This mode allows read intensive applications to benefit from high speed reads while ensuring that any data written to the RamSan is simultaneously written to
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