Would I need an external hard drive to make backups in addition? A NAS is a good solution for storing your video files and streaming them to your TV, tablet,… It is not ideal for storing files you are editing. Given your current requirement a mirroring setup with 2 big disks, such as 2 6 Tb drives, makes the most sense to me.
The NAS can get stolen, damaged in a fire or flood, have 2 disks fail at around the same time, etc. You do need an off-site backup. Essentially 32TB is more than enough storage for me for many years. Is there really any point in getting ones that have NVME storage slots as well? Any suggestions or advice on a model to consider? My situation is as follows: Home based technical specialist consultant. This is on the assumption it would provide a continuous duplicate copy of my data.
The data would still be backed up to NAS of course. So in the event of one disk failing, there should be near zero loss of data?? My concern is that when I read up about Raid options, Raid 1 often seems to be not that favourably viewed.
To be clear: 1. Shutting down the PC to replace the failed drive not a problem its a single user PC 2. The cost of providing a second drive for no increase in storage is not an issue. And even if only a few hours loss of data, reconstructing that can be time consuming. Does the proposed arrangement make sense in my situation? Or should I be looking at other alternatives?
I will be using 8x8tb sas hdd. Basically just looking for redundancy and not to worry about losing my files, pictures, movies. What RAID would be best? My old desktop is dead. Will I need to find a way to hook them up together to be able to get the data back? You cannot read the data of one individual drive that once belonged to a set of RAID disks. In your new machine, the two disks must be configured identically to how they were configured in the old setup in order to access the data.
There are certain disaster recovery programs that are able to recognize RAID drives. The HD cage can take 4 3. I want to install Windows Server on it.
What is the best way to go about? The obvious option for me is to separate OS from data. Install OS on these two 2. Please bear in mind that these drives are used and pulled from servers. Any better way for this? Every disk is a potential point of failure, so using 24 small disks which 4TB drives meanwhile are is not necessarily the most secure starting point. Consider using fewer but larger drives. This will also be slightly cheaper as an 8TB drive costs less than 2 4TB drives.
The empty slots in the enclosure can be handy for future expansion. If you can leave an empty slot between adjacent drives, that will also allow them to run a bit cooler.
Even with RAID 6, the risk of failure with that many disks is quite high. He may work on a project for a few weeks and then will deliver the product. What type of raid system might be best for an application like that? RAID 0 with a back up of the file. How much capacity will i actually have afetr configuration.
If not suggest me a solution for this, because i only have three M2 slots in my notebook and would want both the benefits of Speed And Security of the Raid Levels. You should use 1TB in each of the three slots, and use Raid5 to both benefit from speed and security. Data and parity will be spread across 3 drives, so that reading and writing is done to 3 drives, and 1 is allowed to fail.
If it does, it needs to be replaced. I have a drive that failed in a RAID 1 configuration. I need more space so I was going to get 2 new bigger HD. Now is it advisable to use 2 identical drives or could I use a high performance desktop RPM as the main drive and get a cheaper NAS drive for the mirror?
Both would be the same size. Any issues with doing that? In RAID 1, write speed is as low as the slowest drive. Only if you want a better reliability in the way that different drives have less tendency to fail at the same time. Hello, I enjoyed you info. I could use your expert advice on a Hard Drive situation I have. With alot of data and Pro tools tracks. The drive stopped working one day. I removed the gig Hard drives and tossed the housing.
I stored them away for safe keeping hoping to recover the data one day. He tested them and they still work but no data. How do I marry them again to work as one external drive? I am running Windows 7. Any info would be a great help. This would be a lot more simple with a Linux system, because it has much better facilities for accessing drives other than as filesystems.
Ask around your circle for someone who has Linux knowledge. Whatever you do, do not put the drives into a hardware RAID device and install them as a striped pair.
The RAID controller is likely to overwrite some of the data on the disks, as soon as you do this. I was amused when this popped up on Google. You do have a point that for completeness both versions should be included, so I updated the page.
Thanks for the feedback! This was useful since at the time hard drives were VERY expensive, especially as size increased.
It was cheaper to create a large RAID array inexpensive of disks than it was to purchase a single drive with the same capacity. I would like to find some documents on what each RAID configuration would need as a minimum from the server it is running on. It worked for documents, but not for large or small amounts of data needed to be drawn. Its hardware was very subpar, and although it makes a big deal of being a quad-core, its limit was mhz, which is not as fast as current high level cell phones.
The tech who set it up could not see how a RAID 5 could slow it down, I just wanted to eliminate redundancy altogether except for my manual but effective backups at night and lunch. In my effort to procure money from my manager I rebuilt our old server with new cooling and clean install, as well as RAM improvement to 3. The D-link would render my mock up map in seconds, the old server took 7 seconds.
This D-Link should only be used for homes or documents. Large datasets are useless, write speeds are terrible, as are read. It was a nightmare. And the fact that the old 32 bit with an unreal amount of use was made to look like a giant rack system comparatively was not enough to get any money for a new server. A City Planner has not enough skill to set up a monitor, jerk move on my part, but deserved. Amazed to find City Planners have no mathematical skills, coming from Engineering I assumed they were similar.
Point is, Planners are useless managers and have no skills. And I could go on! Raid systems are to protect data and that is given! How one likes to protect data is decided on the conditions and requirements. To make it short; to be secure at home, get a cloud storage which is slow but very safe as the large service providers take this very seriously but it is a bit expensive or buy a back up drive from Western Digital, Seagate etc.
In my case, I want my data access to be fast, failsafe and accessible from anywhere in the world! What do I do?! I get a raid system like Raid 5 or 6 with 6 drive bays, a back up system to automatically back it up and get a service provider to have them connected to internet like it is in the cloud but actually it is a private cloud.
One can also have a cloud storage lage enoufh to replicate the data at home which is stripped with parity and backed up. It sounds like overkill? What is parity? It is the end result of calculation of data written on a disk as in 1s and zeros. The result is also in 1s and zeros. You write the result in the parity section which is also distributed so that it also has parity information.
It took us haf a day in class some 20 years ago to understand and learn but you do not have to go through that. Imagine there are 5 disks. Data you lost on a drive is missing but like a puzzle, you have all the surrounding lines that are continuing at the other side of the missing piece.
You also have the colours. More, less, this is the idea. This is a nice write up, but missing some basic logic. Other than that, it has the best performance and redundancy of all RAID levels. I currently have 11TB of [ictues on a 12 TB drive. Is there another Raid configuration that is better for capacity and redundancy, plus speed? I have an array of 12x12TB drives. I created a RAID 6 across all 12 and then created one partition and am using an xfs file system. I am getting about 1.
Thank you. RAID 1: Not sure. If yes that what is procedure. If RAID 5 is configured it will take time for rebuild data. Simply like RAID Raid50 is a strip of groups of RAID5. They say better write performance and increase data protection.. So if you have 9 HDs, create 3 cells of RAID5, meaning you can have 3 simultaneous fail providing no more 1 fail in each group. My data can be split two parts: raw data like compressed video and document files and in-process data like the data extracted from the compressed ones and need to be processed further.
Hi, I am setting up a large array for a surveillance system. I have spoken to some people about the size of hard drives available. Given that the MTBF is the same for the drives, the lower number of drives has a lower potential for a failure. The more drives you have, the more likely a failure.
If the RAID array is specifically maintained for data storage and not for any other operating system run, then things get simple.
But below only the most prevailing RAID level schemes are summarized below. In this RAID level 0, two disks are used to write data to two drives in an alternating way, which is striping.
This can be explained with a paradigm. Let us assume, ten chunks of data say 1,2,3,4,5,6,7,8,9, From it 1, 3,5,7,9 will be written to drive one and the rest i. This splitting of data will allow doubling of speed of a single hard drive and will also enhance its performance. But if one drive fails in this array, then data loss is incurred.
The capacity of Raid 0 is equal to the whole sum of the individual drives. Minimum use of hard drives in this level will be two and the data is written to both drives. It is like cloning or mirroring the data of the first drive to the second one and making drive one identical to the second one.
If the first drive fails, then the data backup will be available from the drive 2. That is, if two GB drives are deployed, then the total capacity will be just GB only. Each data word is having its own hamming code and on each read, the Hamming code verifies the data accuracy and also corrects the single disk errors. In this level, the array can recover from multiple and simultaneous hard drive failures. Minimum two drives are required in this RAID level 2.
The data block is split and is written on data disks. Stripe parity is generated on writes and this writing is recorded on parity disks and can be checked on reads. A raid 3 array can recover from hard drive failures and is deployed in environments where applications need high speed throughputs, which can be video production, video editing and live streaming. Parity is generated in writes and recorded on parity disks and checked on reads. This level of RAID has high reading speeds and is highly efficient.
RAID Level 5 — In this RAID 5 level, three drives are implemented and data block is written on a data disks and parity which is generated from writes is distributed onto three drives and is checked on reads. In the situation of drive failure, the reads can be calculated from the distributed parity and the drive failure is masked from the user. But in situations of single drive failure, the performance of the entire array gets depleted. In this level, block level stripping is observed along with double distributed parity.
In case of data recovery, the time for recovery takes place on the size of the disk drive. Double parity offers additional time for rebuilding the array without the data being at risk if single additional drive fails, while the data recovery through rebuild is happening. RAID 10 will also have fault tolerance and will also have redundancy. It will have the splitting of data feature seen in RAID 0 level and will also have mirroring feature seen in raid 1 level.
RAID 10 array can recover from multiple and simultaneous hard drive failures and is ideal for high end server applications. This level is a combination of raid 0 and raid 1 level and is used in imaging applications meant file servers. It offers high performance and reduces emphasis on reliability. In this JBOD raid level, the array of hard disks is made to appear as a single disk system. But there is no raid level implementation on it, which results in lack of fault tolerance.
This gives you both an boost in performance as well as data protection. The main downside of a RAID 10 array is that any drive segment is limited to the smallest drive in the array. RAID 5 arrays require a minimum of three disk drives. For redundancy this array uses data striping and parity which also provides data protection and a performance boost.
The upside of this is that parity data is error-correcting redundancy that is designed to re-create data if a drive fails. The downside of RAID 5 is that the drive segment size is limited to the smallest disk drive.
This configuration stripes stored data and parity across all disk drives on both RAID 5 arrays. The upside of this configuration is parity data provides data protection while the striping provides a performance boost.
RAID 50 also provides high data transfer speeds. The downside is being limited to the smallest disk drive for segment size. RAID 6 arrays are also referred to as dual drive failure protection. This array uses data striping and parity data for redundancy. What sets this array apart is that it includes two independent sets of separately striped parity data.
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