最近一直被 VCB 备份的事情所苦恼着，备份窗口太长。 VCB – VMware Consolidated Backup 是 VI3 时代推出的针对虚拟机备份的一个组件，目前也适用与 vSphere 4.0 的备份，可以和其他备份软件相结合，实现 Lan-Free 和 Off-Host 的备份，和新的虚拟化环境相适应，与传统的 Backup Agent 方式的备份相比，不需要在每一台 Client 上安装 Agent 了，备份时数据流不通过 VM 和 ESX Host，减少了备份对应用的影响。 但是 VCB 的缺点是： 1. 备份时产生的 Snapshot会出现各种各样的问题，如 Snapshot 创建失败，Snapshot 删除失败，某些应用程序不支持 Snapshot 在其存续期间应用会产生故障； 2. 需要一台 VCB Proxy，安装 VCB 组件，以 NetBackup 为例，一般推荐安装在 NBU Media Server 上； 3. VCB 备份需要一个大的磁盘空间，用于放置虚拟机的快照，特别是进行 [...]
如果您的 VMware vSphere 4.0/VI 3.5 环境部署在 NetApp 的存储上，看看这个 TR-3808 文档吧，这是对 TR-3697 的更新。 内容提要： This document compares the performance of 4GbE FC, 1GbE and 10GbE iSCSI, and 1GbE and 10GbE NFS protocols using both VMware® vSphere™ 4.0 and ESX 3.5 on NetApp® storage systems. This document seeks to compare the individual protocol performance and CPU utilization at varying [...]
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嗯，最近的域名备案，查封，怒江路机房事件等等等等，一度让我看低云计算在国内的发展前景。一方面是炒得热火朝天的云计算概念，一方面是岌岌可危的生存环境，恶俗的令人厌恶。 在云计算方面，觉得 VMware 似乎慢了半拍，虽然 2009 年 9 月份随着 vSphere 4.0 的发布，提出了 vSphere 是业界第一款云操作系统，但是真正使用 vSphere 作为商用云计算平台的公司目前都还标明了“This service is currently in limited beta”（http://www.vmware.com/appliances/services/vcloud-express.html），目前还达不到 Amazon 使用 Xen 的成熟程度。 三种常见的云计算服务及其服务提供商： * Software-as-a-Service (SaaS) SalesForce CRM Google Apps * Platform-as-a-Service (PaaS) Google App Engine Microsoft Azure * Infrastructure-as-a-Service (IaaS) Amazon EC2 [...]
You can use the tools provided by the specific HBA card vendor to get the WWN of an HBA card, for example, you can use SANSurfer for QLogic cards and HBAAnywhere for Emulex cards. (There is another easy way to get the WWN of any HBA card vendor, just install NetApp Host Utilities and run [...]
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 [...]
As I have learned from New Concept English III that predicting the future is notoriously difficulty, especially in our modern quick developing world. Ok, but here comes Henry Newman, he self-clamed some successful predicts of the Data Storage industry development in 2009. And here is his storage predictions for 2010 and the year beyond Storage [...]
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AoE (ATA Over Ethernet) is a very simple and lightweight protocol which does not rely on network layers above Ethernet, this makes AoE potentially faster than iSCSI, with less load on the host to handle the additional protocols, it also means that AoE is not routable outside a LAN. AoE is intended for SANs only. [...]
FreeBSD 7.0 已经可以支持 ZFS 文件系统了，不过还处于测试阶段，不推荐用于生产环境。 推荐阅读 ZFS 最佳实践指南：http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide
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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 [...]
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