Also, keep a backup of all the files of the original machine. Make sure all collectors are restarted and appear as running in the admin UI and new data is being recorded on the new server. Description Below is the step by step information about moving Historian.
Resolution A. To start Copy over archive files. Copy over ihc file and rename to new machine name. Open admin UI and change archive paths to new path.
The strategy that I have found most useful is to start the file name with the year, month, and day the photograph was taken or the document was created. If the month and day are unknown, those are left out. Putting the date in the file name can be a burden when the date changes due to new information.
However, my experience has been that the overall benefits are worth the inconvenience. Other information is added to the date to uniquely specify the file name. I try to choose brief information usually one to three words that gives an idea of the contents of the file, but an arbitrary identifier such as a serial number will also work.
Large collections for organizations usually are managed with image databases that have arbitrary identifiers. File names are not intended to have detailed information about an image or to be used for searching the contents of images. The optimal strategy for searching images to find certain content is to search the image documentation that is described in Chapter 4.
Simple identifiers are needed for related files. Various other useful codes can be developed as needed. Historical organizations usually have their own specialized strategies for naming and organizing files. If a digital archive is donated to a historical organization, the organization can be expected to change the file names to fit their systems. A backup copy of a digital archive must be made because the disk drive on a computer can irretrievably fail at any time. I had a hard disk failure several years ago and know a person who had a complete disk failure twice in the past few years.
Also, backup copies are important protection from viruses and other malware that are a major threat to a computer system. Of course, backup copies of the entire computer system should also be made in addition to the historical archives. Backups should be done frequently and migrated to new media. The media for storing the backup changes as technology advances.
Now I use external disk drives. A historical archive must be migrated to new media as technology changes.
The idea that a person can make one backup copy that will last for decades is not applicable. The backup copy can fail and also has a high probability of becoming obsolete media. For an organization with a professionally managed computer network, backups will normally be handled by an Information Technology Department and should meet the criteria described here.
At least three copies of an archive should be maintained, and preferably more. At least one of the copies should be in a different location. The minimum copies of my historical archives typically include:. My basic workflow is to copy the new or revised files from my computer to the external drive anytime I have done work that would require significant effort to reproduce if the disk failed. Often this will be done at the end of the day, but it can be done one or more times during the day when I am busy.
A task on the computer is not completed until the backup has been made. The external drive in the safe deposit box is updated about weekly when many changes are being made and less frequently at other times. The external drive in the safe deposit box can be rotated with the external drive at the computer. The updated external drive at the computer is put in the safe deposit box and the drive in the safety deposit box is used at the computer until the next switch. This reduces the trips to the bank and also assures that there is always a copy in the bank.
At present, I have two external drives for rotation at the bank and a third larger, faster drive that is always connected to the computer. I do not use and do not trust the software for automatically synchronizing copying files between an external drive and computer drive.
This type of software usually comes with an external drive and will be installed on the computer unless the user is careful when the external drive is first connected.
The synchronization software uses computer resources and different software is used with different external drives.
A computer can have resources taken up for external drives that are no longer used. When an external drive is first connected to my computer, I avoid installing any software from the drive and then move all the software on the drive to a temporary folder. After the drive has been used for while with no problem, the temporary folder and files are deleted. When copying new or updated files to a backup drive, I often copy the entire folder and subfolders that have the modified files.
After renaming the corresponding folder on the backup drive by adding 0 to the folder name , the current version of the folder is copied to the backup drive.
After the new copy has completed successfully, the renamed folder is deleted. This minimizes risks and keeps the files updated without needing synchronization software. Putting backups on an internet site is an evolving technology that may be useful. I consider that appropriate for one of the backups, but would also keep another local backup. I also backup my entire computer hard drive using the free Macrium Reflect backup software.
This is mainly to be able to restore the full system if the computer disk fails. I have many programs and customizations that would take many days to reinstall. The Macrium Reflect backup images are kept on the external drives along with the other files.
Backup media such as external disk drives should be replaced every two to four years. This reasonably assures that the media will be replaced before it fails and before it becomes obsolete. Longer time periods before replacement are appropriate if many copies have been made and distributed. Also the time to replacement can be adjusted according to the reliability of the media. After the digital copies have been made, the original items will normally be stored in a way that preserves the historic value of the item.
As discussed earlier, the use of digital copies can greatly reduce the deterioration of the original items that results from handling and display. Damage from handling and display is typically the most common and most severe damage. However, the storage environment can also be a significant source of damage.
High and fluctuating temperatures and humidity are another common source of degradation for photographs and film. High temperature and humidity cause chemical deterioration and also promote the growth of mold and mildew.
Low humidity and fluctuating temperature and humidity cause cracks and peeling. Humidity and temperature interact. The adverse effects of high humidity are worse at high temperature. The optimal temperature and humidity are different for different materials. Significant expertise and resources are needed to provide the optimal conditions.
In addition to the engineering design and maintenance of environmentally controlled vaults, the transfer of items in and out of cold storage causes a major fluctuation in temperature that must be minimized and handled with proper procedures.
For those without the resources for environmentally controlled vaults, compromises must be made. Basements with high humidity and attics with large fluctuations of temperature and humidity must be avoided.
Also locations near heating and cooling vents, in direct sunlight, or next to outside walls should be avoided. Locations with polluting fumes such as from cleaning products should also be avoided.
A closet in an air-conditioned room may be a good location. Maureen Taylor describes how some household freezers can be used to store materials like color photographs and negatives that will inevitably deteriorate without cold storage. The containers used to store photographic materials are also a potentially significant source of deterioration.
Typical cardboard boxes, file folders, envelopes, and plastic containers release acidic gases and other chemicals that cause photographic materials to deteriorate. These chemical reactions occur slowly and may not be noticed over a relatively short time period. They also adversely interact with environmental conditions—for example, the effects of the acidic gases are worse at high temperatures.
The terms acid-free and archival are often used for materials that do not meet the PAT standards. The best practice is to use items that have specifically passed the PAT. The ideal strategy is to put each photograph, negative, slide, or document in a separate enclosure to reduce abrasive contact and chemical interactions between items.
Separate enclosures are particularly needed for negatives. Paper photographs can be carefully combined in an enclosure if resources are limited. Old Historian server source has old archives containing old data. There is a need to move the old data from the source to the destination. Example, 96 default covers past 4 days, covers past year, covers past 10 years. The fastest way to add data from a source. IHA archive file into the destination server is to restore the archive.
The 'Restore an Archive from Backup' utility in the Historian Administrator can be used for this purpose. In the following cases, this utility cannot be used: a If the source archive has a time overlap with an existing online archive on the destination server.
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