The system monitors the internal disks and batteries for a failure condition. In such an event, it notifies the operator of an error through the front panel display and the management software.
1.5Configurable Backup
The
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 affecting 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
In DataSync 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.
None (Volatile) mode
This operational mode disables the backup functionality for the LUN making it completely volatile. In the case of system shutdown or failure, all data stored in the selected LUN will be lost intentionally.
1.6Performance
The
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