Original URL: http://www.theregister.co.uk/2010/09/14/cisco_b230_nexus_5548p/

Cisco adds slim blade with fat memory to UCS

Virts up security and WAN optimization appliances

By Timothy Prickett Morgan

Posted in Servers, 14th September 2010 16:14 GMT

Server wannabe and networking juggernaut Cisco Systems turns the crank on its Unified Fabric converged networking and Unified Computing blade and rack servers today with a new half-width blade that sports lots of memory capacity, the first in a revved lineup of Nexus switches, and virtualized server appliances to run on the whole shebang.

The new blade server for the "California" Unified Computing System is called the B230-M1, and it is based on Intel's Xeon 7500 series of processors. The Xeon 7500 and their cut-down versions, the Xeon 6500s, are aimed at machines with more than two or more sockets and were really designed for machines sporting four sockets or more.

But with virtualization taking off and memory being more of a bottleneck than CPU for a lot of virtualized workloads, IBM, Dell, and other server makers have adapted the Xeon 7500s for two-socket designs with fatter memories than are possible using the higher-volume and less-expensive six-core Xeon 5600 processors. Cisco is now joining this pack with the B230-M1 blade.

This may seem a little bit odd, since when the UCS blade servers were announced in March 2009, one of the big deals that Cisco made about the machines is that it had created an ASIC add-on to Intel's that allowed for the main memory of machines using the quad-core Xeon 5500 processors to be pushed by a factor of 2.7 over all other two-socket designs to 384 GB. The memory extender is offered in the B250-M1 (Xeon 5500) and B250-M2 (Xeon 5600) blade servers as well as in the C250-M1 (Xeon 5500) and C250-M2 (Xeon 5600) rack servers.

The problem with the memory extension ASIC used in these systems is that the blade (which is mounted horizontally, not vertically, in the UCS chassis) is full-width instead of half width like that B class standard blades. If you want more memory density, you have to lose half the slots in the chassis.

Cisco B230-M1 Blade Server

The Cisco Systems B230-M1 blade server.

The new B230-M1 aims to give customers who can afford to pay a premium for Xeon 6500 or 7500 chips a different option, which is a half-width blade that has 32 DDR3 memory slots. That's not quite as much as the 48 memory slots in the fat B250 series blades Cisco did all that engineering for in the original California blades, but the 256 GB supported on the new B230 blade is going to be suitable for a number of customers with heavy memory demands.

With the B230, customers will be able to put as many as 16 relative slow but heavily cached Xeon EX cores against 256 GB, compared to eight or twelve Xeon EP cores running close to 3 GHz against 96 GB of memory in the standard blades and eight or 12 Xeon EP cores against 384 GB in the fat and wide memory extended blades.

Cisco is using memory sticks from Samsung in the B230-M1 and is supporting 8 GB sticks. The company will eventually support 16 GB memory sticks, and that will double up the memory in the B230-M2 to 512 GB. Similarly, the memory capacity on the fat and wide B250-M1 and B250-M2 blades will double up with 16 GB sticks, too. One more thing: the memory on the B250 blades runs at 1.33 GHz instead of 1.06 GHz, so not only are the cores faster on these blades, so is the memory.

As you can see from this top-down view of the B230-M1 blade, there just is not a lot of room for anything else on this blade, especially something that would create lots of heat like a disk drive would:

Inside View of the Cisco B230-M1

Cisco is supporting five of the 11 "Nehalem-EX" Xeon 7500/6500 processors in the B230-M1 blades, including the low-voltage eight-core L7555, which spins at 1.86 GHz and is rated at 95 watts, and the X7560, also an eight-core variant but one that spins at 2.26 GHz and radiates 130 watts. It is interesting that Cisco is ignoring all of the other models in the Xeon 7500 family and is just going for the two parts with the full-on 24 MB L3 cache.

Cisco is supporting all three models in the Xeon 6500, which are tweaked versions of the Nehalem-EX lineup that only work in two-socket servers and which sport significantly lower prices, core for core, compared to their Xeon 7500 brethren. (See our full analysis of the Xeon 6500 and 7500 processors here.)

The B230-M1 has a single dual-port mezzanine slot, allowing for 20 Gb/sec of redundant I/O bandwidth back to the UCS 6100 fabric interconnect, which is a modified version of the Nexus 5000 converged enhanced Ethernet switch from Cisco that plugs into the UCS 5100 blade chassis.

Paul Durzan, director of product management for the Server Access and Virtualization Group at Cisco, says the B230-M1 is a little different from the other blades in that it does not support hard disk drives, but only solid state disks. The SSDs are front accessible, hot swap units and come in 32 GB, 64 GB, and 100 GB capacities. The SSDs can be mirrored if you want, using an LSI SAS2108 RAID controller.

Durzan says that the B230-M1 blade is optimized for running transaction-oriented and database applications that can fit onto a 16-core system as well as desktop virtualization, financial services, and service provider/hosting applications.

The B230-M1 blade for the California machines will be available in the fourth quarter of this year. Pricing was not announced for the device.

Switching to switching now

The upgrade cycle on Cisco's Nexus family of switches, which allow for Fibre Channel storage protocols to be run over 10 Gigabit Ethernet, begins today, too. The new Nexus 5548P top-of-rack switch has 48 ports in a 1U chassis, nearly double that of the Nexus 5510 switches it replaces in the lineup. The Nexus 5548P has 32 fixed 10 Gigabit Ethernet ports and 16 optional expansion ports; in the initial configurations of the new switch, the expansion modules that plug into these ports will come in two flavors: one with 16 10GE ports and another with eight 10 GE ports plus eight Fibre Channel expansion ports.

The Nexus 5010 and 5020 switches are still going to be sold by Cisco, by the way. The 5020 is a 2U machine with 16 fixed 10 GE ports plus expansion modules plus expansion modules that support a dozen 10 GE ports or 16 FC ports; the 5010 is a 1U 28-port switch that has 20 fixed 10 GE ports and one expansion module sporting a mix of 10 GE and FC ports.

In addition to being more compact, the Nexus 5548P switch is a faster switch, with a port-to-port hop of about 2 microseconds, compared to the 3.2 microseconds for the Nexus 5000 switches. The machine has 960 Gb/sec of fabric throughput and can support 4,096 virtual LANs and up to 32,000 MAC addresses. The Nexus 5548P is also upgradeable to 40 Gigabit Ethernet.

According to Cisco documents, the company is working on a 2U, 96-port switch called the Nexus 5596UP, which was not announced today and which Cisco probably did not want to disclose. This switch will have twice as many ports and twice as much fabric bandwidth, but the same VLAN and MAC address limits as the 5548P.

The Nexus 5548P will be available in October and will have a software upgrade that will allow it to handle Layer 3 network traffic and support the FabricPath traffic optimization and network-flattening software that debuted back in June along with new switch modules for its Nexus 7000 end-of-row converged Ethernet core switches. The Nexus 5548P has half as many management points as the prior Nexus 5000 devices and uses 40 per cent less power per port as well.

Prices for the Nexus 5548P switch were not announced.

Cisco Nexus 5548P Switch

The real Cisco Nexus 5548P switch is not this fuzzy, but Cisco's graphics are.

In other networking tweaks, Cisco announced two new fabric extenders for its converged switch family, the Nexus 2248TP for the Nexus 7000 core switch and the Nexus 2224TP for the Nexus 5000 top-of-rack switches. The 2248TP has 48 Gigabit Ethernet ports and four 10 Gigabit ports, while the 2224TP has half that. The Nexus 1000V virtual switch software for VMware's ESX Server hypervisor and used in the UCS system has been revved to the 1.4 release, with the predictable scalability and performance boosts, too.

Finally, Cisco has taken the code behind its hardware-based WAN optimization appliances and packaged it up to run inside of a VMware ESX Server virtual machine. The Cisco Virtual WAAS will be available in the fourth quarter and will run in conjunction with the Nexus 1000V virtual switch and integrate into the vPath dynamic packet steering code for its hard and soft switches.

The Virtual WAAS appliance is being billed as the first "cloud ready" WAN Optimization, something that rival Citrix Systems would no doubt disagree with.

Cisco is also announcing another virtual appliance called the Virtual Security Gateway, which is based on a shiny new set of code. It is, in essence, a firewall for the Nexus 1000V virtual switch that runs inside the ESX Server virtual machines on UCS boxes.

Cisco sells hardware-based firewalls, of course, but a new codebase was required for this virtual appliance to understand networks at the VM level and have firewall settings follow VMs around as they bounce around physical hardware within the UCS system. The Virtual Security Gateway integrates with the vPath packet steering software as well.

These two virtual appliances are the first of what probably will be many from Cisco, which is lumping them together under the umbrella brand of Unified Network Services. ®