Rebco 0 Posted December 15, 2006 I am finally getting into using Raid in my DVRs, Slowly I'm learning the hard way. I use to use 2 hard drives 1 (10gb) for the operating system and a 500 or 750 for the video, But now everyone is telling me to use a Raid system (computer builders I know) i am thinking of 2- 500 gb hard drives using raid 0 with a 10 gig partion for the operating system, but would like to know your (the forum) thoughts on the subject and yes i know the difference in the type of arrays. Also i put this topic here because i just use geovision cards. Thank You Share this post Link to post Share on other sites
CollinR 0 Posted December 15, 2006 RAID 0 isn't really RAID, you want RAID 1 or better yet RAID 10. Share this post Link to post Share on other sites
iSpyVision 0 Posted December 16, 2006 We used RAID 0 for a police station as they requested and it worked fine. It does everything you would need to protect data in this type of appilcation. Share this post Link to post Share on other sites
CollinR 0 Posted December 16, 2006 RAID 0 provides no protection, thats why it's not really RAID (the Redundent part) there isn't alot of difference between RAID 0 and JBOD. If one drive fails all the data in the array is lost, I wouldn't suggest it. RAID 0 does however probably provide the best read/write performance. Share this post Link to post Share on other sites
Rebco 0 Posted December 17, 2006 I guess i just have to go with what the customer wants either more record time or video back up Share this post Link to post Share on other sites
RichTJ99 0 Posted December 21, 2006 RAID 0 provides no protection, thats why it's not really RAID (the Redundent part) there isn't alot of difference between RAID 0 and JBOD. If one drive fails all the data in the array is lost, I wouldn't suggest it. RAID 0 does however probably provide the best read/write performance. I thought raid 0 was the mirror raid & raid 1 was the "performance" raid? If a raid 0 array goes down (one drive dies), its pretty easy to get the array running. Raid 1 (if a drive dies) kills the whole array. Again, I might have that backwards. Share this post Link to post Share on other sites
iSpyVision 0 Posted December 21, 2006 Ooops! I was wrong. I checked with one of our techs and as stated above RAID 0 simply combines the drives to look like one drive thus if one goes down they all do since data is spead among them. RAID 1 will mirror the drive providing data loss protection. Share this post Link to post Share on other sites
odiggity 0 Posted December 22, 2006 do you have a hardware raid controller or a software one? The best performance/protection blend would be raid 5 which is striping with parity. You need at least 3 disks but can have more. the capacity is the sum of all disks minus 1. so if you have (5) 500gb drives, you get 2TB of usable data. with 3 drives it would be 1tb. a single drive's capacity worth of data is used for the redundancy parity. it is striped across all drives. this means that you can lose only 1 drive at a time, or else your data is lost. the array still functions with 1 drive offline and should autoatically repopulate a swapped drive the performace is better than raid 1, worse than raid 0 but not by much here's some instructions to get it to work on windowsxp (its only included on the server products) most of the new sata raid cards will do this too. http://www.tomshardware.com/2004/11/19/using_windowsxp_to_make_raid_5_happen/index.html Share this post Link to post Share on other sites
CollinR 0 Posted December 22, 2006 RAID 10 if you have 4 or more disks in the array. Share this post Link to post Share on other sites
