July 10th, 2012 by Mark Kidd
NETGEAR ProSafe GSM7352S 48-Port Switch Review
The Netgear GSM7352S 48-port switch is among the latest additions to StorageReview’s burgeoning enterprise testing environment. The GSM7352S offers much-needed room for growth in the test lab, and enables our staff to broaden the range of network topologies we can create while evaluating new storage gear. The GSM7352S offers 48 10/100/1000 Mbps ports, along with two built-in 10 Gigabit Ethernet SFP+ interfaces on the front and two optional 10 Gigabit module bays on the rear for uplinks and stacking. The GSM7352S also supports IPv4/IPv6 dynamic routing protocols including OSPF, VRRP and multicast, along with VLAN routing and a removable power module which can fall back on external RPS power in the event of a power supply failure.
- 48 1GbE Ports
- 2 built-in 10 Gigabit SFP+
- Physical stacking up to 8 switches/384 ports
- Front Interfaces
- 48 auto-sensing RJ45 10/100/1000 ports
- 4 shared SFP ports for Gigabit fiber uplinks (shared with the last 4 RJ45 ports)
- 2 independent 10 Gigabit SFP+ ports
- USB port (config/firmware files storage)
- Rear Interfaces
- 2 optional 10 Gigabit I/O module bays
- Serial RS-232 port for console
- Processor / Memory
- Processor: MPC8633 @ 666 MHz
- System memory: 256 MB (RAM)
- Packet buffer memory: 12 Mb per switch
- Code storage (flash): 32 MB
- Switching fabric: 192 Gbps
- Throughput: 142.8 Mpps
- Jumbo frame support: up to 9K packet size
- (64-byte frames, 10 to 100 Mbps): <35.5μs
- (64-byte frames, 1 Gbps): <4.1μs
- (64-byte frames, 10 Gbps): <2.0μs
- Acoustic noise (ANSI-S10.12): 44 dB @ 25°C ambient temperature
- Power consumption: 91.8 W maximum 100–240VAC, 50–60Hz universal input (all ports used)
- Heat dissipation: 389.20 Btu/hr
- Mean time between failures (MTBF): 169,522 hours (~19.4 years) @ 25 °C and 83,550 hours (~9.5 years) @ 55 °C ambient temperature
- Dimensions (w x d x h): 440 x 391 x 43 mm (17.3 x 15.4 x 1.7 in)
- Weight: 6.8 kg (14.99 lb)
Design and Build
The front of the GM7352S employs a simple, functional design, with the four shared SFP ports and two independent 10 Gigabit SFP+ ports clustered on the right side. The USB port for configuration and firmware updates is located on the left side, along with a bank of indicator LEDs.
The back of GM7352S without expansion modules offers access to a standard RS-232 console port on the left and the modular power supply at right. From left to right, the back of the GM7352S offers two bays for stacking and uplink modules as well as an RPS connector for redundant power in the event the internal power supply fails.
Prosafe Control Center is NETGEAR’s first-party web interface for its managed switches, so web configuration will be familiar for previous NETGEAR administrators. Users can access nearly every feature through the web-interface, providing instant feedback on ports in use drilling down into the specifics for any activity flowing through the switch.
The user interface also gives quick and easy access to setting up specific features such as Link-Aggregation, which use on a frequent basis in our reviews.
Local and Remote Stacking
Flexible stacking options are among the key advantages of the GM7352S for enterprise clients and therefore also in our testing environment. This unit can stack with the L2+ Gigabit PoE GSM7228PS, GSM7252PS and L3 Fiber GSM7328FS managed switches. The GM7352S offers single IP address management, allowing administrators to stack up to eight switches as a single logical unit with one GUI and one CLI managing the stack. A stacked switch acts and appears as a single switch in the network, and adding a switch to the stack is automated: once the new unit is attached, the stack configuration is automatically updated.
Netgear GM7352S in the StorageReview Enterprise Lab
We use the Netgear GM7352S in the StorageReview Enterprise Lab for all interconnect traffic between our servers and workstations, as well as product reviews utilizing 1GbE connections. In reviews we use the Netgear switch and its Link-Aggregation features for NIC teaming, as well as for connecting multi-port devices during MPIO tests for iSCSI NAS and SAN reviews. With multiple reviews taking place at the same time, its important for us to have enough networking resources as well as a platform that won't get bogged down with our heavy load of networking traffic.