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21 May 2009: IBM announced the results of a study conducted by the I.T. analyst firm Freeform Dynamics, commissioned by IBM, which showed that Linux desktops were easier to implement than IT staff expected if they targeted the right groups of users, such as those who have moderate and predictable use of e-mail and office tools
The research behind the report, “Linux on the Desktop: Lessons from Mainstream Business Adoption,” was designed, executed and interpreted independently by Freeform Dynamics. Feedback was gathered via an online survey of 1,275 I.T. professionals from the U.K., U.S., Canada, Australia, New Zealand and a spread of other countries across Western Europe and the Nordics. Ninety percent of the study’s respondents had direct experience with desktop Linux deployment in their business.
Those with experience of such migrations said that Linux on the desktop was best achieved when it was first targeted to groups of non-technical users. Transaction workers and general professional workers were seen as more than twice as likely to be primary targets for desktop Linux adoption than mobile and creative staff. A majority of the respondents indicated that Linux desktop deployments to these targeted groups was easier than anticipated.
“Some users care a great deal about their desktop computing environment and may be emotionally or practically wedded to Windows,” said Dale Vile, research director, Freeform Dynamics. “The trick is to avoid getting distracted by these, and focus on the users for whom the PC on their desk is simply a tool to get their job done. Migrating a general professional user who only needs to access a couple of central systems, an email inbox and light word processing is pretty straightforward.”
Key statistics of the study include:
71% of respondents indicated cost reduction as their primary driver for adoption.
35% stated the ease of securing the desktop was another primary driver
32% cited the lowering of overheads associated with maintenance and support in general were factors contributing to the benefit of desktop Linux adoption
Those with experience of Linux desktop rollouts are 50% more likely to regard non-technical users such as general professional users and transaction workers as primary targets for Linux
58% of those with prior experience of a Linux desktop rollout see general professional users as primary targets
52% of those with prior experience of a Linux desktop rollout see transaction workers as primary targets.
32% of those with prior experience of a Linux desktop rollout see power users as primary targets.
47% of respondents said usability was the main consideration when evaluating or selecting a desktop Linux distribution for use in a business environment
The study confirmed Linux on the desktop adoption is primarily driven by cost reduction. About twice as many of the respondents cited cost savings over security as the primary driver of why they’d adopt Linux on the desktop. Participants in the study indicated that both environments can be secured adequately — it’s just cheaper to secure a Linux desktop and maintain it that way.
“If a company is a ‘Windows shop,’ at some point it will need to evaluate the significant costs of migrating its base to Microsoft’s next desktop and continuing the defense against virus and other attacks,” said Bob Sutor, vice president of Linux and open source, IBM Software Group. “Savvy IT departments see the Linux desktop as a PC investment that actually saves money during this downturn. We see the recession fueling open source on the desktop.”
The user groups in the study were defined as:
IT operations/support staff
General professional users (relatively light and predictable use of e-mail, office tools, etc)
Transaction workers (mostly using enterprise applications in a routine prescriptive manner)
Other (non-IT) technical staff (e.g. engineers, technical designers/architects)
Office based power users (e.g. finance staff, marketing teams, knowledge workers, etc)
Highly mobile professional users (e.g. sales, roaming managers, etc)
Creative staff (non-engineering, e.g. graphic design)
For more information on IBM, you can visit http://www.ibm.com/think
Case:After the customer’s mobile hard disk is used for a period of time, the hard disk will not be recognized. The sound of “click”” is issued. Because the data is important
HDD Printed circuit board (PCB) with board number 100619769 is usually used on these Seagate hard disk drives: ST9750422AS, 6WS, SU, PN 9RW14G-567, FW 0001BSM1, Seagate 750GB SATA 2.5″ Hard Drive; ST9500424AS, 6WS, SU, PN 9RW143-567, FW 0001BSM1, Seagate 500GB SATA 2.5″ Hard Drive; ST9750420AS, 5WS, WU, PN 9RT14G-031, FW 0002DEM1, Seagate 750GB SATA 2.5″…
This is a general description of the most frequently asked questions about the IDE/EIDE Interface. This information is meant only to address basic troubleshooting of IDE/EIDE compatibility issues, and is not meant to be an in-depth discussion of all possible error issues. Our purpose is to aid you in solving basic IDE/EIDE difficulties that may arise.
Issues Covered:
11.Why is the 20th hole plugged on the Ribbon Connector?
It is a means of preventing the cable from being installed (plugged in) upside down. Users that inadvertently plug a cable in backwards can cause damage to both the hard drive and the motherboards interface. If your system does not have the corresponding missing pin, you may remove this plug by “teasing it out” with a straight pin.
12. Does the IDE interface cable influence data integrity, signal noise issues and drive recognition?
The answer is Yes! The ATA standard specifies that an IDE Interface cable should be no longer than 18 inches. The standard cable used today conforms to the ATA specifications. However, 40 pin interface cables do not always filter out noise when used with the Ultra DMA 33, 66, 100 and even 133 hard drives of today. Another option for reduction of cable noise would be to use an 40-pin 80-wire interface cable. These cables provide better grounding to maximize signal integrity.
13. Will adding an EIDE Interface increase disk performance?
Although most, if not all computers manufactured today have the fastest interface available, the answer really depends on the hard disk drive. Unless you’re working with legacy equipment, a new interface may not give you a performance increase. As an example, upgrading an ISA controller to a PCI controller would be the biggest improvement a user could make.
14. Why is the hard disk drive NOT as fast as advertised?
Advertised transfer rates are based on the fastest speed at which the drive can send data across the ribbon cable from the drive buffer, with the transfer stopping temporarily every time the buffer re-fills. This process continues until a command is complete. Data transfer rates will differ between system configurations, as a drive is not the single component that decides transfer rates. The one thing that designers have control of is the speed at which data transmits across the data ribbon cable from the drive’s buffer, but not how your other components interact with the drive.
15. Why is it that an old IDE drive may not work with a New IDE drive?
The reason is the fact that many hard drive manufacturers were already making and selling drives before the IDE standard was clearly defined. While this is now, for the most part, relegated to very old IDE drives that have problems functioning in dual-drive configurations. This scenario was more prevalent when the hard disk drives are from different manufacturers, however, in some cases, two drives may not function together at all. Even today though, in rare circumstances even new drives will not work together.
16. Why is my new IDE drive not recognized as a slave or a master?
Configuring IDE drives can be simple, as is the case with most single-drive installations, or troublesome, especially when mixing drives from different manufacturers on a single cable. Most IDE drives must be configured in one of the following ways:
Because each IDE drive has its own controller, one drive must be jumped as a master and the other as the slave. There are no functional differences between the two, except that the drive that’s specified as the slave will assert the DASP (Drive Active/Slave Present) signal after a system reset to inform the master that a slave drive is present in the system. Daisy-chained hard disk drives that do not have their jumpers set correctly will not function. You should contact the disk drive manufacturer if you are unsure of proper jumper settings.
17. Two hard disk drives will not function even after verifying jumper settings. What could be wrong?
There may be a compatibility problem between the two drives. Use the following steps to verify the function of each drive:
18. Why does an IDE CD-ROM and Tape Backup not work when attached to the Interface?
On occasion, attaching an IDE CD-ROM or tape backup drive to a bus that supports an IDE drive, can slow down and even compromise the drive’s data integrity. Although this is extremely rare today, make sure that your systems motherboard has an Enhanced IDE interface that is ATAPI compliant. If it is not, you can purchase and add-in card that has this interface, and they usually come with a secondary IDE interface built on the same card.
19. Even after switching roles, my hard drives still will not work. What else can I do?
First, see questions 16 and 17 above. We recommend that you separate the hard drives and connect them to the different interface ports (IDE buses) of the system. If the system does NOT have a Secondary IDE interface, we recommend that you install an EIDE interface card. By doing so, each of your drives would be able to communicate individually with the system. Enhanced EIDE cards also can add BIOS LBA support and enhanced performance for the drives.
20. Why are 80-wire, 40-pin ribbon cables required for certain hard drive configurations?
40-conductor cables support only up to 33MB/sec transfers (and should only be used for up to 16MB/sec or less in our opinion), while 80-conductor cables support up to 100MB/sec. Thus you can always replace a 40-conductor cable with an 80-conductor cable, but not the other way around without seriously hurting transfer speeds, and quite possibly damaging one or more of your systems components.
Reason 2: Incorrect jumper settings on the drive
Serial ATA: If you have a 3.0 Gbit/sec SATA drive that is not being detected by your 1.5 Gbit/sec SATA controller, or it causes your system to lock up when connected to a 1.5 Gbit/sec SATA controller, you may need to jumper your 3.0 Gbit/sec SATA drive to the slower speed of 1.5 Gbit/sec for the system to recognize it properly.
Jumper settings for Seagate SATA drives
Jumper settings for Maxtor-brand SATA drives
ATA: It is recommended that all Seagate ATA hard discs supporting the Cable Select jumper option be configured as Cable Select. If your computer system was built prior to October 1998 and does not support UDMA 66 or greater you will be required to use the Master/Slave jumper settings.
Jumper settings for Seagate ATA drives
Jumper settings for Maxtor-brand ATA drives
When using Cable Select jumper settings on your ATA drive, all devices connected to the UDMA cable must also use the Cable Select setting. The cable decides master/slave device detection when the cable select jumper settings are used.
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