Texas Memory Systems RamSan-325/325c - Manual (Page 8)

RamSan-325/325c User’s Manual - 4 -
1.2 System Components
The system components for the RamSan-325/325c include:
• Main system memory ranging from 16 to 64 Gigabytes (325c) or
32 to 128 Gigabytes (325)
• One to four Fibre Channel controllers
• Dual, redundant hot-swappable power supplies
• Redundant fans
• Ethernet monitoring port
• Serial monitoring port
• Front panel display for monitoring and configuration
• SNMP based monitoring
• Java-based Web monitoring
• Internal backup RAID
• Redundant batteries (N+1)
1.3 Power
The RamSan includes two power supplies. Only one power supply is
needed to run the system. The power supplies are auto-ranging (they
accept either 110 or 220 VAC power).
The RamSan-325’s power supplies are connected to an internal battery
pack. The battery pack provides up to 30 minutes of operation after a
power failure. In the event one battery or power supply fails, the other
functional power supply and battery combination handles the system
operation. You can monitor power supply temperature and voltages from
the system monitoring software.
If a RamSan-325 looses power, it operates for five minutes before
shutting down. The shutdown process involves synchronizing data to the
internal hard disk drives. If the system determines that the battery life will
not last the full shutdown delay period, it starts the synchronization
process.
When power is restored, the RamSan-325 restores system memory with
the data from the internal hard disk drives and then resumes normal
operations. In addition, the system begins recharging the batteries. You
can monitor the battery charge levels using the bundled remote
monitoring software.
1.4 Non-Volatility
By utilizing internal hard drives and batteries, the RamSan-325 combines
the performance of DDR RAM storage with the non-volatile nature of hard
disk drives. Texas Memory Systems equips the RamSan-325 with an
internal backup RAID. The backup RAID can operate at about 200 MB/sec
during operation. In order to operate the drives after a power failure
occurs, the RamSan-325 contains redundant batteries. When fully
functional and fully charged, the batteries are able to provide at least 30
minutes of operation.