Maintaining the System, Data Preservation

Appendix C

Maintaining the System

Proper use of preventive maintenance procedures can keep your system in top operating condition and minimize the need for costly, time-consuming service procedures. This appendix contains maintenance procedures that you should perform regularly.

Data Preservation

Everyone inadvertently deletes files at one time or another. Also, hard-disk drives can fail after extended use, so it is not a question of whether you will even- tually lose data, but when. To avoid such loss of data, you should regularly make backup copies of all hard-disk drive files. Frequent, regular backups are a must for any- one using a hard-disk drive.

Scheduling Backups

The frequency with which backups should be made depends on the amount of storage space on a hard-disk drive and the volatility of the data contained on the drive. Heavily used systems require more frequent backups than systems in which files are seldom changed.

Dell recommends that you back up the hard-disk drive at least once a week, with a daily backup of those files known to have been changed. Following these guidelines ensures the loss of no more than a day’s work in the event of a hard-disk drive failure or if you inadvertently delete one or more important files.

As further insurance against data losses, you should keep duplicate copies of the weekly and monthly backups at an off-site location. Doing this ensures that you lose no more than a week’s work, even if one of the on-site backups becomes corrupted.

Backup Devices

Tape drives are fast, convenient, and affordable devices that can back up data at rates of up to 1.6 megabytes per second (MB/sec) (sustained, with data compression) and can often run unattended. Dell offers tape drives with storage capacities in the range of 4 gigabytes (GB) to

24 GB per tape cartridge and recommends these drives and their associated backup software for use as system backup devices.

Recovering Data

Some hard-disk drive failures are recoverable. In these cases you may be able to recover all lost data if the proper utility software is available. Even losses such as accidentally deleted files or accidental reformatting of a hard-disk drive can be reversed with these utilities.

If the computer system is running MS-DOS, many appar- ent data loss problems are due to corruption or erasure of the hard-disk drive’s master boot record (MBR), MS-DOS boot sector, or file allocation table (FAT). That is, accidental deletion of files or accidental reformatting of the hard-disk drive alters the MS-DOS boot sector, the FAT, and the root directory.

However, such accidents do not actually erase the con- tents of the hard-disk drive files until new data is written to the sectors containing these files. With the appropriate recovery utility, the data stored in these areas can often be restored, meaning that you can recover most, if not all, of the data.

Unlike using the format command on a hard-disk drive, using format on a diskette completely erases all the data on the diskette unless you use the diskette format pro- gram included in the Mace Utilities.

Maintaining the System C-131

2100/180, 2100/200 specifications

The Dell 2100/200 and Dell 2100/180 are innovative offerings from Dell that cater to the demands of a variety of users, ranging from small businesses to larger enterprises. Both models are designed to deliver high performance and reliability, making them indispensable tools in the modern computing environment.

The Dell 2100/200 features an impressive Intel processor that ensures fast and efficient performance, making it suitable for multitasking and handling complex applications. Coupled with a generous RAM configuration, this model can easily manage demanding workloads, resulting in smoother performance and faster processing times. In contrast, the Dell 2100/180, while slightly less powerful, still maintains robust performance levels that are well-suited for general productivity tasks and everyday use.

Both models come equipped with ample storage options, featuring hard disk drives that provide significant space for data and application storage. Users can choose between traditional HDDs and solid-state drives (SSDs), allowing them to prioritize speed and performance based on their specific needs. The flexibility in storage options ensures that users can customize their systems according to their requirements, enhancing the overall user experience.

Connectivity is another area where the Dell 2100 series excels. Both models come with a range of ports including USB, HDMI, and Ethernet, allowing for seamless connectivity with various peripherals and networks. This versatility makes the machines ideal for environments where multiple devices need to be connected simultaneously, whether for presentations, data transfer, or internet access.

In terms of energy efficiency, both the Dell 2100/200 and Dell 2100/180 incorporate advanced cooling technologies that minimize energy consumption while maximizing performance. This not only helps reduce operational costs but also contributes to a more sustainable computing environment.

The design of these models is another distinguishing feature. With a compact form factor, they fit easily into office spaces while maintaining a professional appearance. Their durable build quality ensures longevity, making them a worthwhile investment for businesses.

Overall, the Dell 2100/200 and Dell 2100/180 serve as powerful and reliable machines that combine advanced technologies and user-centric designs. Whether for business or personal use, these models provide a solid foundation for effective computing, ensuring that users can achieve their goals efficiently and effectively.