big-endian and little-endian

"Big-endian and little-endian are terms that describe the order in which a sequence of bytes are stored in computer memory. Big-endian is an order in which the "big end" (most significant value in the sequence) is stored first (at the lowest storage address). Little-endian is an order in which the "little end" (least significant value in the sequence) is stored first. For example, in a big-endian computer, the two bytes required for thehexadecimal number 4F52 would be stored as 4F52 in storage (if 4F is stored at storage address 1000, for example, 52 will be at address 1001). In a little-endian system, it would be stored as 524F (52 at address 1000, 4F at 1001)."

techtarget.com

Exadata Samrt Flash Cache Changes the world of DB machines

Cloud Computing and Enterprise 2.0—Gain a Competitive Advantage

This presentation will begin on May 27, 2010 at 11:00 AM Pacific Daylight Time.


Audience members may arrive 15 minutes in advance of this time.

Event Date: Thursday, May 27, 2010
Time: 11 a.m. PT/2 p.m. ET
Duration: 60 minutes

To join

IPMP on Solaris ( 2 Physical IPs + 1 Virtual Public IP)

First time to implement IPMP on a real environment (not training) , I faced so many problems and wasted so much time , trying all the different procedures I found on the internet posted by others, and none of them worked properly. At the end I was able to achieve the required, and in this post I explain what is the configuration that worked with me , It may help others

This procedure depends on editing the files, so to make it affective, a reboot is needed.


(1) Ethernet ports:
Choose two Ethernet ports , it's preferred to have them on different controllers for redunduncy, for example : to have one of them on built-in Ethernet ports and the other, a port on a PCI card

(2) IPs:
Three IPs is needed on your subnet , 2 IP to be used on the physical ports, these IPs also called Internal , and the third IP to be used as a public IP which used by the application users.

(3) Other Network Information:
-Hostname
-Subnet netmask
-Default router , If there is any
-

(4) Preparing Information:
-Every physical interface will have :
Name : for example ; bge0 , nxge0 ,,, etc
Host-name , usually it is MachineHostName-interfacename, for example : mymachine-bge0
- IPs:
bge0 -> 192.168.20.10
nxge0 -> 192.168.20.11
Public IP -> 192.168.20.12
Netmask -> 255.255.255.0
Group -> production ( you can set the group name you want), all IPMP interfaces should belong to one IPMP group.

(5) Editing files:

root@mymachine # vi /etc/hosts

#

# Internet host table

#

::1 localhost

127.0.0.1 localhost

192.168.20.12 mymachine mymachine.mydomain.com loghost

192.168.20.11 mymachine-bge0

192.168.20.10 mymachine-nxge0

root@mymachine# vi /etc/hostname.bge0

mymachine netmask + broadcast + group production up \

addif mymachine-bge0 deprecated netmask + broadcast + -failover up

root@mymachine# vi /etc/hostname.nxge0

mymachine-nxge0 netmask + broadcast + group production deprecated up

root@mymachine# vi /etc/defaultrouter

192.168.20.1

root@mymachine#vi /etc/netmasks

#

#The netmasks file associates Internet Protocol (IP) address

#masks with IP network numbers

#

# network-number netmask

#

# The term network-number refers to a number obtained from the internet Network

# Information Center.

#

# Both the network-number and the netmasks are specified in

# "decimal dot" notation, e.g:

#

# 128.32.0.0 255.255.255.0

#

192.168.20.0 255.255.255.0

Sun Microsystems and Fujitsu Enhance SPARC Enterprise M3000 Server

Sun Microsystems, Inc. (NASDAQ: JAVA) and Fujitsu (TSE: 6702) today announced an enhanced SPARC Enterprise M3000 server with the new 2.75GHz SPARC64 VII processor. The SPARC Enterprise M3000 is a single socket, highly reliable, mission-critical server powered by a quad-core SPARC64 VII processor. It has many of the same mission-critical features as the mid-range and high-end SPARC64-based SPARC Enterprise servers such as mainframe-class reliability, availability and serviceability (RAS) at an entry-level price. The new SPARC64 VII processor running at 2.75GHz and faster system memory modules deliver up to 23 percent better performance than the previous generation. The server's increased performance coupled with the industry leading Solaris Operating System (OS) provides customers with an ideal platform to handle enterprise applications including database, BIDW, ERP and CRM.

Ellison: Sunacle is an IBM killer

'We are keeping everything'

By Rik Myslewski in San Francisco • Get more from this author

Posted in Enterprise, 22nd September 2009 07:15 GMT

Oracle CEO Larry Ellison plans to combine Sun Microsystems hardware - all of it - with Oracle software to take over the enterprise-computing world.

"I would like us to be the successor to IBM," he told a business and technology forum Monday night in San José, California.

But not today's IBM, he emphasized.

"We want to be T.J. Watson Jr.'s IBM. Not [Louis] Gerstner's IBM. Not [Sam] Palmisano's IBM," he said, contrasting that company's heyday during the 50s, 60s, and 70s with its slow transformation into a services company in recent years.

Speaking of the younger Watson's leadership of the company from 1952 to 1971, Ellison said: "That's when IBM really was the dominant software company...and they translated that position in software to become the dominant systems company in the world."

"T.J. Watson's IBM was the greatest company in the history of enterprise in America because they had that combination of hardware and software running most of the enterprises on the planet."

And that's what Ellison wants to do with Sun.

"We think with the combination of Sun technology and Oracle technology we can succeed and beat IBM," he said, "That's our goal."

"We are not going into the hardware business," he said, "We have no interest in the hardware business."

But he was quick to clarify that point, saying that he doesn't plan to jettison Sun's hardware portfolio. On the contrary, he plans to leverage it from a pure hardware play into a hardware cum software systems operation.

"We have a deep interest in the systems business," he explained. "We think that by combining our software with hardware that we can deliver systems that can be the backbone of most enterprises in America and around the world."

"We have no interest in competing with Dell," he continued, contrasting selling big iron with selling big solutions. "We are very interested in running airline systems. We're very interested in running banking systems and telecommunication systems. And that requires both hardware and software."

When asked if Oracle planned to keep all of Sun existing systems, Ellison was adamant: "We are keeping everything. We're keeping tape. We're keeping storage. We're keeping x86 technology and SPARC technology - and we're going to increase the investment in it."

He also was lavish in his praise of Sun: "Sun has fantastic technology. We think it's got great microprocessor technology - it needs a little more investment, but we think it can be extremely competitive. It's got the leading tape archival systems. We think the Open Storage on their new disk system is absolutely fantastic. Java speaks for itself. Solaris is overwhelmingly the best open-systems operating system on the planet."

Fully revved up, he then finished his homage by calling Sun "a national treasure for the last couple of decades."

And now it's part of Ellison's treasure chest. By combining Sun's hardware portfolio with Oracle's software portfolio - and integrating both companies' engineering savvy - Ellison wants to transform Oracle from a software house into a systems powerhouse.

All well and good - and maybe even doable. But from where we sit, Ellison's statement that "We are keeping everything" in Sun's hardware portfolio is mighty hard to swallow. There's a lot of dead weight in that sack-o-tech.

But even if Ellison is merely blowing smoke, his passionate pro-Sun panegyric might help evaporate a few drops of flop sweat beading on the foreheads of terrified Sun engineers who live in fear of the next move by the man who holds their futures in his ever-tightening grip. ®

Hacker Public Radio - Linux Security

ep0387 :: Linux Security

Hosted by Mark Clarke on 2009-06-24
Filed under Episode | Comments (0)

In the episode Darlene and I chat with Mohammed Ayad, a Linux Sys admin from Lybia about Linux security and the first Linux Day held in Libya.


*Copied from the Hacker Public Radio site