Need more help? Join the discussion. Was this information helpful? Yes No. Thank you! Any more feedback? The more you tell us the more we can help. Can you help us improve? Resolved my issue. Clear instructions. Easy to follow. No jargon. Pictures helped. Didn't match my screen. Incorrect instructions. These can include: Hardware. Confirm that the controller is rated for the tape backup hardware. The capacity and speed of the media server performing the backup, or the remote system being backed up significantly impacts performance.
System activity during backup also impacts performance. Fragmented disks take a longer time to back up.
Heavily fragmented hard disks not only affect the rate at which data is written to tape, but also affect the overall system performance. Fragmented files take longer to back up because each segment of data is located at a different location on the disk, which causes the disk to take longer to access the data. Make sure to defragment disks on a regular basis. The amount of available memory will impact backup speed.
Insufficient memory, improper page file settings, and a lack of available free hard disk space will cause excessive paging and slow performance. Make sure that when any program or process starts the amout of memory it consumes at the start it should release the same at the end of the same process or program it is also called memory leak. The amount of memory consumed by any process should also be released when the process stops or terminates ,if its not doing so then its called Memory leak.
The average file compresses at a ratio when hardware compression is used. Higher and lower compression occur depending on the type of files being backed up.
Average compression can double the backup speed, while no compression runs the tape device at its rated speed. Image and picture files are fully compressed on disk. Therefore, no hardware compression takes place during the backup causing the tape drive to operate at its native non-compression rate of speed. Hardware compression is performed by the tape device and not the backup software. Successful compression can increase the tape drive's data transfer rate up to twice the native rate.
Compression can be highly variable depending on the input data. Image files from a graphical program like Microsoft Paint, may compress at 4. Data that has already been compressed or random data such as encrypted data or MPEG files may actually expand by about five percent when attempting to compress it further.
This can reduce drive throughput. The total number of files on a disk and the relative size of each file impacts backup performance. Fastest backups occur when the disk contains fewer large size files. Slowest backups occur when the disk contains thousands of small files.
A large number of files located in the same directory path back up more efficiently than backing them up from multiple directory locations. Larger block sizes can improve the compression ratio, which helps the drive to achieve better throughput and more tape capacity. Make sure that the block and buffer size are set properly.
The throughput will increase in proportion to the compression achieved, until the drive's maximum throughput is reached. Veritas does not recommend increasing the Block Size above the default settings.
The backup speed for a remote disk is limited by the speed of the physical connection. The rate at which a remote server's hard disks are able to be backed up depends on:. A common reason for slow network backups can be networking configuration.
Features such as "full-duplex" and "auto-detect" may not be fully supported in every environment. Do this for the backup server switch port, and any switch ports for machines being backed up. Note: When a hub is in place instead of a switch, full duplex may not be supported, see the Original Equipment Manufacturer for details on device features. System Recovery Image-based backup and disaster recovery for servers, desktops and laptops.
Explore these resources for valuable insights and perspective. Backup Exec Security and Encryption. Read the solution brief. Top 5 Reasons for Backup Exec. Read now. Solution Brief Unified data protection for the Cloud Read the brief. View all Backup Exec Resources. Backup Exec requirements and support. No jargon. Pictures helped. Didn't match my screen.
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