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Hot spare: what is it & how does it work?
A hot spare RAID is the spare disk in the array. It is not used in any way và is needed only at a certain time. This time comes in the sự kiện of a failure of one of the array drives. The RAID controller starts the RAID rebuilding procedure and uses a hot spare disk to replace the failed disk. Thus, the time period when the array data is not available is significantly reduced. Hot spare disks are possible in RAID 1, RAID 5 or RAID 6. Hot spares can be used for any failed disk in the storage array; that is, it is not allocated for a specific volume group. However, a hot spare disk must have certain characteristics: it must be identical with the disk that it protects.
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Thus, maximum data protection in the array is achieved, since the simultaneous damage or failure of two disks simultaneously occurs only in exceptional cases. A single drive failure can be easily fixed using hot spare.
Hot spares: precautions khổng lồ note
If you are not using a new disk for a hot spare, be careful, as all data from the disk will be deleted. Therefore, before you designate such a disk for hot sparing, transfer the data to a secure drive sầu.
Choosing a hot spare disk must be done deliberately. First, you need khổng lồ find out which disks are in the array, & then select the exact same for hot sparing. That is, if your array is created from hard drives, then the hot spare disk should also be a hard drive sầu, but not an SSD. Otherwise, there will be no automatic recovery.
Hot spares & RAID data recovery
As mentioned above, if a drive sầu is designated as a hot spare, all data will be erased. So if there are any important files, have a backup of them or create a disk image with them.
If any files were lost on the RAID array or the RAID array crashed, you will need software like vuialo.net RAID Recovery. It will help you return all the files lớn a new location, và it is possible to lớn restore files of any type & size; there are no limits and restrictions. vuialo.net RAID Recovery supports RAID 0, 1, 0 + 1, 1 + 0, 1E, RAID 4, RAID 5, 50, RAID 6, 60, và JBOD recovery, whether connected to a dedicated RAID controller or motherboard with RAID tư vấn from Intel, NVidia or VIA. This application was one of the first tools on the market (& is already over 15 years old); it automatically determines the type of the original RAID array & other important characteristics of the array, while at the same time ensuring fully manual or automatic operation. In addition, there is support for Unicode files and multi-level folders.
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So, khổng lồ begin recovery:
First, download RAID Recovery khổng lồ your PC or server, và then install the software on Windows 7, 8 10.
mở cửa RAID Recovery &, if necessary, enable the Recovery Wizard. Then be sure to select a specific array.
Next, you will be asked to lớn choose which scan mode you prefer:
Fast recovery mode. Try this mode first; you can also choose it when there is no free time at all, và the data is needed. Full recovery mode (deeper scanning if the surface scan did not cope with the task).During recovery, RAID Recovery automatically checks the current state of the RAID array, controller, tệp tin system & restores files where possible.
Then you will get read-only access khổng lồ the files, so you will see all search results for không tính phí.
Now you are sure that your data has been restored in the appropriate form. On the software website, buy a license for RAID Recovery, & you will get unlimited access lớn your files và the ability to lớn export selected files anywhere.
