Archive for the ‘Hardwares’ category

Dell PE2950 LCD Message explained

January 22nd, 2010

Dell PowerEdge 2950 control dashboard LCD provides status messages to signify when its physical system is operating well or when needs some attention. The LCD lights blue to indicate a normal operating condition, and lights amber to indicate an error condition.

The LCD scrolls a message that includes a status code followed by descriptive text. The following section lists the LCD status messages that can occur and the probable cause for each message. » Read more: Dell PE2950 LCD Message explained

No comments »

Posted in Hardwares, System Tuning

Tags:

Install Dell OMSA on Redhat Enterprise Linux

November 19th, 2009

Here we listed 3 ways on the installation of Dell OpenManage Server Administrator on a Redhat Enterprise Linux, you can follows these steps on CentOS or SLES 10, they would work well.

1, Install from RPM packages
Generally we need these RPM packages, you can search and download them from Google.com.
» Read more: Install Dell OMSA on Redhat Enterprise Linux

1 comment »

Posted in Cmd Reviews, Hardwares, System Tuning

Tags:

Hpasmcli Usage Example on ProLiant DL380

November 16th, 2009

Hpasmcli is short for HP System Health Application and Insight Management Agents, it’s a scriptable command line interface for interacting with the hpasm management daemons, which can be used to view / set / modify BIOS settings such as hyper-threading, boot sequence control, and UID LEDs. It can also be used to display hardware status.

In addition to the command line interface, hpasmcli is also usable for incorporating into shell scripts. The return value of hpasmcli can be used to verify a command executed successfully. » Read more: Hpasmcli Usage Example on ProLiant DL380

No comments »

Posted in Cmd Reviews, Hardwares

Tags:

Dmidecode: Report hardware information from command line

September 29th, 2009

Dmidecode is a tool for dumping a computer’s DMI (some say SMBIOS) table contents that  described in your system BIOS in a human-readable format. This table contains descriptions of your system hardware components, as well as other useful pieces of information. Typically it includes system manufacturer, model name, serial number, BIOS version, asset tag as well as a lot of other details of varying level of interest and reliability depending on the manufacturer. This will often include usage status for the CPU sockets, expansion slots (e.g. AGP, PCI, ISA) and memory module slots, and the list of I/O ports (e.g. serial, parallel, USB). » Read more: Dmidecode: Report hardware information from command line

2 comments »

Posted in Cmd Reviews, Hardwares

Tags:

Linux Disk Scheduler Benchmarking

September 11th, 2009

[Dr. Peter Chubb, Project Research Officer - Gelato] Over the last six months, Google has sponsored Gelato to take a close look at the disk chedulers in Linux, particularly when combined with RAID.

We benchmarked the four standard Linux disk schedulers using several different tools (see our wiki for full details) and lots of different workloads, » Read more: Linux Disk Scheduler Benchmarking

1 comment »

Posted in Hardwares, System Tuning

Tags:

Difference between login shell and non-login shell

September 8th, 2009

Understanding the distinction between your shell types, profile files and shell rc files is important because when you apply modifications to your system you need to know where  to set variables in order to make sure that they can be initialized as expected. » Read more: Difference between login shell and non-login shell

2 comments »

Posted in Hardwares

Tags:

Haystack new storage solution for billions of photos

September 8th, 2009

This week Facebook should have completed its new photo storage system which is designed to reduce the social network’s reliance on expensive proprietary solutions from NetApp and Akamai. The new large blob storage system, named Haystack, is a custom-built file system solution for the over 850 million photos uploaded to facebook each month (500 GB per day!). » Read more: Haystack new storage solution for billions of photos

3 comments »

Posted in Hardwares, System Tuning

Tags:

SATA Disk Problems with suggested solutions

September 8th, 2009

kernel: ata2: status=0×51 { DriveReady SeekComplete Error }
The root cause is not understood yet but cabling or drivers is suspected.
Suggested: Raise a vendor call for the cabling to be checked. » Read more: SATA Disk Problems with suggested solutions

No comments »

Posted in Hardwares

Tags:

Redhat and AMD migrate VMs across CPUs

September 8th, 2009

AMD and REDHAT have just done the so called impossible, and demonstrated VM live migration across CPU architectures. Not only that, they have demonstrated it across CPU vendors, potentially commoditising server  processors. Eeek! » Read more: Redhat and AMD migrate VMs across CPUs

No comments »

Posted in Hardwares, Virtualization

Tags:

Using MegaCli set disk to HotSpare mode in linux

September 8th, 2009

When one of the disks failed in Dell MD1000, the hotspare disk will change its role into online mode, and you need to replace  the bad disk with a good one. So a question comes, how can I set the new disk into hotspare mode. » Read more: Using MegaCli set disk to HotSpare mode in linux

No comments »

Posted in Hardwares

Tags: