![]() When you back up over a network, even the network performance has a major impact on backups. As failing media makes the backup unreliable, the best option is to replace media on a regular schedule or during the first sign of failure. However, that takes time, and failing media can cause backups to slow down significantly. (For instance, do not clean DLT drives until the cleaning light on the device is on.)īoth tape and disk are remarkably resilient, and both will try to work by rewriting failed blocks even as they are failing. Ensure that you clean the heads on your tape drives and libraries as per the manufacturer’s instructions. In the case of hard drives, the procedure is to wait until the disk starts showing indications of impending failure.ĭirty heads are also one of the reasons for reads and write to fail on tape systems. When it comes to tapes, its lifespan is determined by how long they have been used or the number of backups. The lifespan of backup media is finite thus, you need to replace disks and tapes as and when required. Else try switching back to the old version and check the performance improvement. In case your backup performance deteriorates after a new version of the firmware on any part of your system, then check with the manufacturers. Here “appropriate” means the latest version, but not always. The Wrong FirmwareĮnsure you have got the appropriate firmware on your system. Check the documentation (including any new updates on the manufacturer’s Web site) to ensure everything is set correctly. This includes incorrect host bus adapter (HBA) settings, poor choice of page file parameters or block sizes, or the wrong SCSI settings. The classic one does not have enough cache, but there are several other potential problems as well. Improper ParametersĪfter speed, it is incorrect parameters for the storage that can make backup systems slow down your backups significantly. Thus, adjust both the speeds such that they match with each other. Trying to feed data too fast results in blocks being resent. A slower speed indicates lesser throughput. If your system is feeding/ transferring data faster or slower than your backup system can handle it, then that will affect the backup performance. How does your system transfer data? Faster or slower? Yes, speed matters. Let us have a look at the checklist of 8 things that causes slow data backups: 1. If your backups abruptly start to take longer, examine your system even if the backups are still within your normal backup window. Something happens to your backup it will affect your everyday operations. On a typical system, data backup is the closest thing to simple read-write operation. Why bottlenecks occur and how to alleviate them? The solution is to increase the bandwidth between the data and backup devices to slow down data backups that are caused by bottlenecks. This happens when the backup throughput required to complete the process is larger when compared to the network bandwidth. There are times bottlenecks occur between the data and backup devices. Why is my backup taking so long? Have you ever been to such a situation? If yes, then it is time to find out what causes the slowing down of your data backups and how to make your backup environment more efficient?
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