Javik 0 Posted October 27, 2015 Is there a list anywhere of all-in-one DVRs / NVRs with RAID6 or hotspare support? If you're serious about keeping your security camera data around and surviving drive failures then you need RAID redundancy, and you need it to be able to repair itself and/or survive one or two drive failures in rapid succession. Most generic NVRs seem to be single disk or RAID-0 disk spans without any failure protection. If you lose a disk, you will lose part of or everything recorded. With RAID 1/5 there is one redundant drive. Any one drive can fail and you don't lose anything. With RAID-6 there are two redundant drives. Any two drives can fail and you don't lose anything. With RAID 1/5/6 + hotspare there are one or spare drives not used for anything. Any array drive can fail, and the controller will automatically grab the hotspare and use it to repair the array, restoring drive redundancy in a few hours. Maximum data protection comes from RAID6 + hotspares. If one drive fails and the array starts rebuilding, and then a second drive fails before the rebuild onto the hotspare finishes, no data is lost. Because 3 or more drives are used for data protection, the array costs are highest, though it is essentially insurance money paid in advance to protect against failure. For quite a while there have been generic RAID-1 soft-mirroring controllers but the implementations are often cruddy and repair/rebuild is complex and difficult. Just identifying which drive failed with these cheap RAID-1 controllers is often difficult. So looking for all-in-one systems RAID 5/6 and hotspares appears to be the best way to find the more reliable and easier to manage storage systems. Share this post Link to post Share on other sites
abdelm01 0 Posted October 31, 2015 There are a lot of recorders that support your needs. I prefer using the Hikvision DS-96256NI NVR. On a 24 HDD set, I usually do 2 sets of raid 5 and 2 Global Hotspares. They also support RAID0, RAID1, RAID5, RAID10. You can also find smaller solutions but with the same outcomes. Share this post Link to post Share on other sites
