X220 I5
Nakita Heitmann
Right now with wifi on in console only I'm seeing a consistent 6.2-6.3 watts. I've had it drop down to 5.7 but can't get that level consistently. I think this is about as low as I'm going to get it right now (without undervolting) and I'm curious to see what others are running at.
Are you bragging? ;-) That is an incredibly low number for a laptop, at least the 4-7 year old laptops I have had. I am lucky to get it down to 14 watts on my Toshiba L300. I would be interested to know what you are measuring that number with and how? Because I doubt you will beat it! I measure my total laptop consumption at the wall with a Kill-A-Watt meter. Because that is the number that counts...if that is what you get with proper watt meter you should be more than satisfied!
Philosophy is looking for a black cat in a dark room. Metaphysics is looking for a black cat in a dark room that isn't there. Religion is looking for a black cat in a dark room that isn't there and shouting "I found it!". Science is looking for a black cat in a dark room with a flashlight.
@lagagnon I'm glad to hear this sounds like a brag ... I thought that with the new power fixes I'd see far below this in just virtual console with no X running. I expected down around 3 or 4. I believe that windows can achieve that level of power savings on the x220. Not giving up yet, but until more work is done on the ASPM power saving support, I suppose this is the floor.
The Flex System x220 Compute Node is the next generation cost-optimized compute node designed for less demanding workloads and low-density virtualization. The x220 is efficient and equipped with flexible configuration options and advanced management to run a broad range of workloads.
Lenovo Flex System is a new category of computing that integrates multiple server architectures, networking, storage, and system management capability into a single system that is easy to deploy and manage. Flex System has full and built-in virtualization support of servers, storage, and networking to speed provisioning and increased resiliency. In addition, it supports open industry standards, such as operating systems, networking and storage fabrics, virtualization, and system management protocols, to easily fit within existing and future data center environments. Flex System is scalable and extendable with multigenerational upgrades to protect and maximize IT investments.
The Flex System x220 Compute Node is a high-availability, scalable compute node optimized to support the next-generation microprocessor technology. With a balance between cost and system features, the x220 is an ideal platform for general business workloads. This section describes the key features of the server.
Model 7906-DBx is a new Network Attached Storage (NAS) optimized model that includes the x220 compute node and the Flex System Storage Expansion Node connected together as a single unit at the factory. This single model number enables a simpler acquisition for both business partners and direct sales. The combination of the x220 compute node and the storage node is certified with Windows Storage Server 2012 meaning that this configuration is an excellent foundation for a low cost NAS solution. Windows Storage Server 2012 is available via the Reseller Option Kit (ROK) program using part number 00Y6302. Model DBx does not include drives giving you maximum flexibility when it comes to selecting drives, either SAS or SATA disk drives or high-performance solid-state drives.
The x220 supports the processor options listed in the following table. The server supports one or two Intel Xeon E5-2400 processors, but the server supports only one Intel Pentium 1403 or 1407 processor or E5-1410 processor. The table also shows which server models have each processor standard. If no corresponding where used model for a particular processor is listed, then this processor is available only through configure-to-order (CTO) process.
Lenovo DDR3 memory is compatibility tested and tuned for optimal performance and throughput. Lenovo memory specifications are integrated into the light path diagnostics for immediate system performance feedback and optimum system uptime. From a service and support standpoint, Lenovo memory automatically assumes the system warranty, and Lenovo provides service and support worldwide.
The x220 supports Low Profile (LP) DDR3 memory RDIMMs, UDIMMs and LRDIMMs. The server supports up to six DIMMs when one processor is installed and up to 12 DIMMs when two processors are installed. Each processor has three memory channels, and there are two DIMMs per channel.
The following table shows the maximum memory speeds that are achievable based on the installed DIMMs and the number of DIMMs per channel. The table also shows maximum memory capacity at any speed supported by the DIMM and maximum memory capacity at rated DIMM speed. In the table, cells highlighted with a grey background indicate when the specific combination of DIMM voltage and number of DIMMs per channel still allows the DIMMs to operate at rated speed.
If memory rank sparing is used, then a minimum of one quad-rank DIMM or two single-rank or dual-rank DIMMs must be installed per populated channel (the DIMMs do not need to be identical). In rank sparing mode, one rank of a DIMM in each populated channel is reserved as spare memory. The size of a rank varies depending on the DIMMs installed.
The following table lists the memory options available for the x220 server. DIMMs can be installed one at a time, but for performance reasons, install them in sets of three (one for each of the three memory channels).
The x220 server has two 2.5-inch hot-swap drive bays accessible from the front of the blade server (Figure 2). The server optionally supports 1.8-inch solid-state drives, as described later in this section.
On standard models, the two 2.5-inch drive bays are connected to a ServeRAID C105 onboard SATA controller with software RAID capabilities. The C105 functionality is embedded in the Intel C600 chipset.
The x220 also supports an entry level hardware RAID solution with the addition of the ServeRAID H1135 Controller for Flex System and BladeCenter. The H1135 is installed in a dedicated slot at the front of the server (see Figure 3). When the H1135 adapter is installed, the C105 controller is disabled.
The ServeRAID M5115 SAS/SATA Controller (90Y4390) is an advanced RAID controller supporting RAID 0, 1, 10, 5, 50, and optional 6 and 60. It includes 1 GB of cache, which can be backed up to flash memory when attached to an optional supercapacitor. The M5115 attaches to the I/O adapter 1 connector and can be attached even if the Fabric Connector is installed (used to route the Embedded Gb Ethernet to chassis bays 1 and 2). The ServeRAID M5115 cannot be installed if an adapter is installed in I/O adapter slot 1. When the M5115 adapter is installed, the C105 controller is disabled.
MegaRAID CacheVault flash cache protection uses NAND flash memory powered by a supercapacitor to protect data stored in the controller cache. This module eliminates the need for a lithium-ion battery commonly used to protect DRAM cache memory on PCI RAID controllers. To avoid the possibility of data loss or corruption during a power or server failure, CacheVault technology transfers the contents of the DRAM cache to NAND flash using power from the supercapacitor. After the power is restored to the RAID controller, the saved data is transferred from the NAND flash back to the DRAM cache, which can then be flushed to disk.
The following table shows the kits required for each combination of drives. For example, if you plan to install eight 1.8-inch SSDs, then you need the M5115 controller, the Flash kit, and the SSD Expansion kit.
The following figure shows how the ServeRAID M5115 and the Enablement Kit are installed in the server to support two 2.5-inch drives with MegaRAID CacheVault flash cache protection (row 1 of the preceding table).
Optional add-ons to the ServeRAID M5115 controller are RAID 6 support, SSD performance accelerator, and SSD caching enabler. The feature upgrades are as listed in the following table. These are all Lenovo Feature on Demand (FoD) license upgrades.
The Performance Upgrade for Flex System (implemented using the LSI MegaRAID FastPath software) provides high-performance I/O acceleration for SSD-based virtual drives by using an extremely low-latency I/O path to increase the maximum I/O per second (IOPS) capability of the controller. This feature boosts the performance of applications with a highly random data storage access pattern, such as transactional databases. Part number 90Y4412 is an FoD license.
The SSD Caching Enabler for Flex System (implemented using the LSI MegaRAID CacheCade Pro 2.0) is designed to accelerate the performance of hard disk drive (HDD) arrays with only an incremental investment in solid-state drive (SSD) technology. The feature enables the SSDs to be configured as a dedicated cache to help maximize the I/O performance for transaction-intensive applications, such as databases and web serving. The feature tracks data storage access patterns and identifies the most frequently accessed data. The hot data is then automatically stored on the SSDs that are assigned as a dedicated cache pool on the ServeRAID controller. Part number 90Y4447 is an FoD license. This feature requires that at least one SSD drive be installed.
The 2.5-inch drive bays support SAS or SATA hard disk drives (HDDs) or SATA solid-state drives (SSDs). The following table lists the supported 2.5-inch drive options. The maximum quantity supported is two.
The x220 supports the attachment of the Flex System Storage Expansion Node. The Flex System Storage Expansion Node provides the ability to attach additional 12 hot-swap 2.5-inch HDDs or SSDs locally to the attached compute node. The Storage Expansion Node provides storage capacity for Network Attach Storage (NAS) workloads, providing flexible storage to match capacity, performance and reliability needs.
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