Computer Research
CCTV Can Protect Your Property Around The Clock: Installing Security & CCTV Installation
Sunday, January 31st, 2010 | Computer Research | No Comments
Installing Security: Why do you need CCTV Installation? CCTV (closed circuit television) systems can protect your property cheaper and easier than a manned security service. The CCTV systems when combined with motion detection, the Internet and central station monitoring can provide all of the property protection that is required.
Many modern CCTV cameras have motion detectors built into them. If multiple cameras are utilized at a facility, the multiplexer / DVR will have a motion detection system built into it. This motion detection can be customized for the area of view of each camera on the site. The motion detector whether in the camera or in the multiplexer has an output that can create an alarm state. This alarm state can either enable the DVR to record or can transmit a signal to a central station.
So what exactly is a RAID array???
Monday, July 27th, 2009 | Computer Research | 2 Comments
Read explanations but they don’t seem to make much sense! Could somebody explain to me what a raid array does in plain English?
I know that RAIDing several drives allows teh computer to see them as one big drive but that’s about as far as I understand!!
Thanks in advance!!
A Raid Array is a setup consisting of multiple hard drives and a RAID controller. It is a way to store data on multiple hard drives. Some configurations are a mirror, where two hard drives contain the exact same information at the same time. Others spread the information over multiple hards with redundancy, so 1 drive can fail, and you will still have all of your data on the combination of the other drives. The RAID controller sets up which style you have, RAID0,RAID1,RAID5, RAID10 and RAID100
Computer hard drive raid array setup ?
Monday, July 27th, 2009 | Computer Research | 3 Comments
Getting opinions from people who have this. I build my own computers and upgrade about once a year. I am thinking about my next upgrade and making a raid array with two SATA HD. This should produce the best write/read times but give me your thoughts and experience with your raid array ? What type of raid array do you use and why do you think a certain raid array is best type to use for a home/ gamming pc ?
JBOD
easy and you can still great speeds, i have one samsung Spinpoint F1 1T for all my music and vids and i have a Corsair Extreme Series128GB for my games and a Western Digital VelociRaptor 150GB for my OS’s, i have windows vista and windows 7
great load times and if i need more space i just pop a new drive in and start filling it no need to reinstall a OS or combine the drives as i have had HUGE issuse with that, if one of your drives dies you may lose more data then you think. and as this is only and upgrade i think JBOD is best
Can i make my own RAID array?
Monday, July 27th, 2009 | Computer Research | 3 Comments
I want a RAID 0 array, but don’t need 7.5Tb. I only want 500Gb.
Is is possible for me to make one, using a few little SATA disks?
Yes… if your motherboard supports RAID0 or if you have a controller card. RAID0 requires at least two drives of equal size and will create a single combined space drive for you. So, if you have 2 10GB hard drives in RAID0, this will give you 20GB space as a single drive. If you have 3 10GB in RAID0 then you have 30GB space. Etcetera.
As stated, the motherboard must support this feature or you need to buy a RAID expansion card (which can be expensive).
Also note that I have successfully creaded a RAID0 with two drives of unequal size. One was a 200GB and the other was a 250GB and because I put them in RAID0 the controller card limited the 250GB drive to a 200GB to match the smaller. I don’t recommend this, but it does work.
Failed RAID SCSI Controller – can array be recovered?
Monday, July 27th, 2009 | Computer Research | 1 Comment
I have a RAID 5 configuration on a hardware RAID SCSI controller. The controller has just failed but the hard drives are not damaged. Can I recover the raid array without having to rebuild it and loose my data?
What I want to know is, will I need to buy an identical controller to rebuild the array?
For RAID 5 configuration, you need to rebuild it and that’s the only choice.. To rebuild it, please take note to backup all your current data and only start recovery.