There is an interesting article provided by Vyatta about the most common mistakes practised by many companies, and I think that from this white paper we all can get something beside server virtualizaion, and should conside give network virtualization a try in the near future. You can get the withe paper here. The Top Five [...]
In the last few days, a great article about the comparison of Cisco UCS and HP Matix has been quoted in many web sites. Although Cisco is a new attendant in the server hardware market, but with its UCS bundled with EMC and VMware, anyone can ignore it presence. The first public comparison between the [...]
比如 Load Balance、Fault Tolerance 等选项？ 个人理解： HP 自带的工具，可以实现将多块网卡绑定为一个 Team，多块网卡可以是同时连接到一个交换机上，也可以实现分别连接到不同的交换机上。但是，从 Server 本身的角度来说，所谓的 Load Balance 只能是从发送的角度来说，即只能是 Transmit 的 Load Balance，而不能实现 Receive 的 Load Balance。即服务器只能控制其发送的数据从多块网卡走，但不能实现对接收的数据具体是从哪块网卡进来。 如果要实现对接收的数据的 Load Balance，只能是从其上联的交换机方面来实现，而且必须是多块网卡连接到同一个上联交换机，而不能是连接到多个上联交换机，如果是多个交换机，则只能实现 Fault Tolerance，即只能实现多块网卡，有一个失去连接时，保持网络连接，而不能实现 load Balance 功能，即不能同时从多块网卡进来。
利用 Wireshark 处理网络问题 原文 http://www.novell.com/connectionmagazine/2007/q3/tech_talk_9.html?sourceid=NCM_q3_07_tt9 WireShark 截图 Switches only forward four types of traffic: Broadcasts Multicasts Traffic to and from the connected system’s MAC address Traffic to an unknown MAC address 作者的监听解决方案： half-duplex lines：a simple four-port hub full-duplex lines：a small network tap Tapping into Full Duplex Networks Sometimes referred to as “walkie-talkie” style communications, the [...]
Because blade servers may have a limited number of network adapters, it will likely be necessary to use VLANs to separate traffic for the service console, VMotion, IP storage, and various groups of VMs. VMware best practices recommend that the service console and VMotion have their own networks for security reasons. If you dedicate physical [...]
Continue reading about Configuring ESX Networking on Blade Servers
The storage you configure for an ESX Server host might include one or more storage area networks (SANs) that use iSCSI, which is a means of accessing SCSI devices and exchanging data records using TCP/IP protocol over a network port rather than through a direct connection to a SCSI device. In iSCSI transactions, blocks of [...]
Continue reading about Networking Configuration for Software iSCSI Storage