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 Umbrella Online Backup Services |
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Common FAQ
Can you briefly explain the idea of how the Umbrella Online Backup Software works?
Umbrella backup solution is a client application with a user-interface for easy backup configuration. It allows users to upload selected files to the Backup server and runs scheduled backup jobs.
It also allows users to create different backup sets for different backup purpose. Besides file backup, it can backup a list of applications such as MS Exchange, MS SQL, Oracle, MySQL, Lotus Domino, and much more. It supports Windows 2000, XP, 2003, Vista, Linux, Mac OS X, etc.
Umbrella backup server store backup data from multiple backup accounts. It has a web-based Management Console for system administrators to manage the Backup Server, such as configuring system and backup account settings, and viewing backup statistics and reports. Users can also logon to this Management Console to manage their own backup account or restore their own backup data. |
What is the recommended bandwidth?
It really depends on what kind of data to be backed up, e.g. for personal file backups, the daily data transfer should be limited, while MS Exchange backup could be significant,
you can check with your internet services provider for the internet upload speed, over 1Mb is recommended |
How can I backup a huge data set over the Internet?
If you have a lot of data (e.g. 200GB) to backup to the Backup server, it would take a considerable amount of time to perform the first full backup over the Internet.
You can try the following method:
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Use the Seed Loading Utility to backup your backup set to a local hard disk (instead of directly transfer to the Backup server through the internet)
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Send the backup data to us using a removable hard disk
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We can then load all your backup files from your removable hard disk into your backup account. This could save you days (even weeks) of performing your first full backup.
In addition, subsequent backups are incremental (only new or updated files will be uploaded to the server), the amount of data transfer should be relatively small.
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What is the best way to restore a huge data set?
We can copy the data of the particular backup set to a removable media, e.g. external hard disk, and ship it to you. You can then use the “Decypt Files Tool” in the Umbrella client to restore the backup data from the removable media to its original format. |
What is the average compression ratio?
All backup files are compressed and encrypted before uploading to the Backup Server, the average compression ratio for text-based file is around 4:1. However, no further compression can be made on files that are already in compressed format (e.g. JPG, ZIP). In general, you can assume a 2:1 compression ratio when you are backing up a file set with variety types. |
Can I change my encrypting key?
The encrypting key cannot be changed once you setup your Backup Set. This is necessary for the integrity of the Backup Set, making sure that backup data is only encrypted by one key. Otherwise, you will have problems remember two encrypting keys when you want to restore your files in the future.
You need to recreate your Backup Set if you really want to change your encrypting key.
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If the “Use Login Password as Encrypting Key” option was selected when creating the backup set. Why I cannot restore the backup data with my most current login password?
By selecting the “User Login Password as Encrypting Key” option when creating a backup set, Umbrella client will set your login password as the encrypting key for the backup set. Once set, even if you change your login password afterward, the encrypting key will remain as your original password. In other words, if you have changed your login password, you still need to use the original password to decrypt and restore the backup set.
Currently, if the encrypting key is forgotten or lost, the backup set can never be restored. It is not possible to restore without the key. |
What kind of encryption used by Umbrella Backup ?
There are two encryptions being performed by Umbrella Backup:
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Encryption of backup data - This is being done by 128-bit symmetric key encryption (AES, TripleDES, TwoFish). 256-bit is not available because it requires too much CPU and it is not really required. (128-bit is currently being used by most banks)
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Encryption of backup traffic - This is being done by 1024 bit RSA public key encryption. The strength of the encryption depends on the key size you use when you generate your CSR before submitting to your CA. 1024 bit is what is being used by most CAs.
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Instant Data Replication
Backup data from Umbrella Backup Server can be replicated to the Umbrella Replication Server, this instant replication provides added protection to the data backed up. In case the Umbrella backup server fails, Umbrella replication server can be converted into main server, so that schedule backup jobs will not be interrupted. Therefore, Umbrella replication server provides an added protection to the backed up data. |
How is the data privacy being maintained on Umbrella Backup?
All data are encrypted with user's defined encrypting key before they are sent to the online backup server. The encrypting key is not stored on Umbrella servers. Without the encrypting key, the backup files are useless to anyone. The backup user is the only person who can decrypt the backup files to reveal the original content. |
Does AhsayOBM copy the same set of files regularly? After the initial upload, subsequent backup jobs will only transfer the modified or new data to the Backup server. It depends on the nature of the data, but normally, less than 2% of all data is modified. |
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