1 day ago by 流云

传统的RAC内部互联大部分都是基于普通网络实现的，目前最为普及的是百兆和千兆网络，最快的也就是尚不普及的万兆网。由于普通网络的速度限制，在需要频繁进行内部通信的多节点RAC数据库中性能就无法得到保证。正是基于这一点，Oracle和Qlogic在2006年2月24号共同发布了基于Infiniband高速互联网络的RDS for Oracle RAC内部互联方案。 如图所示，传统的RAC内部互联协议都是使用UDP协议，这样无论内部互联网络是用普通网络交换机还是Infiniband交换机，都需要先把UDP协议转换成IP协议才能通过网络传输，如果使用Infiniband交换机的话，那么还需要把IP协议 ...

Taobao DBA Team - rdc.taobao.com/blog/dba · 1 reference

3 days ago by electroncyber.com

Super Micro Computer has alien a new accession to the SuperBlade family. With 16 cores and 64GB of DDR2 memory, the SuperBlade SBA-7141M-T enables 160 processor cores and 640GB of DDR2 anamnesis in ten blades per 7U enclosure, which aswell supports up to four networking switches. The SuperBlade SBA- ...

electroncyber.com - electroncyber.com

46 days ago by David Sumsky

Let's decompose the ibnetdiscover output a bit. The first paragraph begins with Switch keyword. The switch has GUID 0x144f00006e9794. The channel adapter begins with Ca keyword. Their GUIDs are 0x3ba0001003de4 (node node2) and 0x3ba0001007ba8 (node node1). The second one corresponds with the node di ...

dsumsky lines . . . - dsumsky.blogspot.com · 3 references

46 days ago by Stephen

This is part of an ongoing series of longer articles I will be posting every Sunday as part of an experiment in offering more in-depth content. There has been a lot of discussion in the storage industry about Fibre Channel over Ethernet (FCoE), making it the toast of Storage Networking World, but th ...

Stephen Foskett, Pack ... - blog.fosketts.net · Rank: 35,453 · 26 references

50 days ago by David Sumsky

It's almost two months ago when I began to write about advanced diagnostics of IB networks. In the end of the article, I suggested to start the IB subnet manager. So let's do it with the init script:/etc/init.d/opensmd startNow, we are ready to compare the outputs of the commands when the IB subnet ...

dsumsky lines . . . - dsumsky.blogspot.com · 3 references

52 days ago by flickerdown

In the previous Future Storage System articles, we’ve covered the basic hardware foundation for what I envision to be a powerful future-oriented storage solution for the commercial midrange. However, as you’re probably aware, hardware is meaningless without software to provide the operational capabi ...

Dave Graham's Weblog - blog.flickerdown.com · 1 reference

55 days ago by flickerdown

In Part 3a, we discussed the possibility of a purpose-driven Compute Node based on the Torrenza initiative for the Future Storage system. This expansion node made use of Hypertransport as a “glue” between the base storage compute node and the expansion node (of computation or I/O flavours) that coul ...

Dave Graham's Weblog - blog.flickerdown.com · 1 reference

56 days ago by flickerdown

In the previous two articles on the Future Storage System (FSS), I took a general look at a basic storage system architecture ( Part 1) and then went a bit deeper into some of the more interesting bits of that system from a platform standpoint ( Part 2). In this article, I want to dive a bit deeper ...

Dave Graham's Weblog - blog.flickerdown.com · 1 reference

57 days ago by flickerdown

So, in my article yesterday, I gave a global view of a very simple storage system for the future. Since I LOVE this type of conjecture and theoretics (is that a word?), I decided to take this a step further and flesh out some of the other intricacies of the design. Check out the image below and then ...

Dave Graham's Weblog - blog.flickerdown.com · 1 reference

58 days ago by flickerdown

So, I’ve been toying around with this in my mind for some time. Essentially, I’ve tried to understand the basic “Storage Processor” limitation of current storage systems and propose an admittedly simplistic design to get around some of the difficulties. The biggest hurdle, in my mind, is to have cac ...

Dave Graham's Weblog - blog.flickerdown.com · 1 reference