{"id":8913,"date":"2023-09-23T16:00:00","date_gmt":"2023-09-23T16:00:00","guid":{"rendered":"https:\/\/businessyield.com\/tech\/?p=8913"},"modified":"2023-09-22T01:09:42","modified_gmt":"2023-09-22T01:09:42","slug":"raid-0-vs-raid-1-full-comparison-when-why-to-use","status":"publish","type":"post","link":"https:\/\/businessyield.com\/tech\/technology\/raid-0-vs-raid-1-full-comparison-when-why-to-use\/","title":{"rendered":"RAID 0 vs. RAID 1: Full Comparison + When & Why to Use","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"\n

Which is better? RAID 0 vs. RAID 1? Well, before we go into that, we should probably define what RAID is.<\/p>\n\n\n\n

RAID stands for Redundant Array of Independent Disks. It is a technology for storage units that offers a balanced flow and plenty of benefits, such as better fault tolerance, enhanced reliability, and high performance. It combines two or more disk storage arrays into logical units that behave like a single drive. This offers The grouping is implemented using software and hardware.<\/p>\n\n\n\n

In simple terms, RAID allows multiple hard drives to couple with a single larger storage capacity disk. <\/p>\n\n\n\n

Creating a larger storage space from numerous smaller drives also helps in different performance tasks. These include protection across drives to improve write and read speed and mirroring for data redundancy.<\/p>\n\n\n\n

While most RAID levels can provide good protection against and recovery from hardware defects or defective sectors\/read errors (hard errors), they do not offer any protection against data loss due to catastrophic failures (fire, water) or soft errors such as user error, software malfunction, or malware infection. <\/p>\n\n\n\n

For valuable data, RAID is only one building block of a larger data loss prevention and recovery scheme \u2013 it cannot replace a backup plan.<\/p>\n\n\n\n

How is RAID redundancy achieved?<\/strong><\/span><\/h2>\n\n\n\n

The software to perform the RAID functionality and control the drives can either be located on a separate controller card (a hardware RAID controller) or it can simply be a driver. Some versions of Windows, such as Windows Server 2012 as well as Mac OS X, include software RAID functionality. Hardware RAID controllers cost more than pure software, but they also offer better performance, especially with RAID 5 and 6.<\/p>\n\n\n\n

RAID-systems can be used with a number of interfaces, including SATA, SCSI, IDE, or FC (fiber channel.) There are systems that use SATA disks internally, but that have a FireWire or SCSI interface for the host system.<\/p>\n\n\n\n

Sometimes disks in a storage system are defined as JBOD, which stands for Just a Bunch Of Disks<\/em>. This means that those disks do not use a specific RAID level and act as stand-alone disks. This often occurs in drives that contain swap files or spooling data.<\/p>\n\n\n\n

Whether for increased performance or reliability, upgrading a single disk to a RAID array of at least two disks will for sure make a big difference. There are a few common RAID configurations, and some unusual ones, each using different data storage distribution techniques.<\/p>\n\n\n\n

However, most of the time, the first two levels, RAID 0 or RAID 1 will be enough for personal needs.<\/p>\n\n\n\n

RAID 0 vs. RAID 1:<\/strong><\/strong> What is RAID 0?<\/strong><\/span><\/h2>\n\n\n\n

RAID 0 is a type of disk array that uses striping to combine multiple disks together. Also referred to as disk striping, it is a configuration that divides data across two or more disks into logical groups called stripes. <\/p>\n\n\n\n

Disk striping is the process of writing individual sections of data on different disks. Data is distributed equally across all disks that are part of the array, with no regard to where it came from or where it needs to go. If you have 2 or more disks available for your computer, then you can create a stripe set by using the disks as one big drive letter. <\/p>\n\n\n\n

For example, if you have two 80 GB hard drives on your computer, you would see them as \u2018G:\u2019 and \u2018H:\u2019. With this method, data can be written to both physical drives simultaneously which provides good speed for reading and writing files to the volume. <\/p>\n\n\n\n

Because the information will be distributed over multiple drives, this decreases the potential for loss of data if a single disk goes down. This also speeds up access time since more than one drive spins at the same time to get one request. Because you have multiple disks to offer data to the operating system, read requests are notably faster, especially with a RAID controller with a decent amount of cache memory.<\/p>\n\n\n\n

However, there is no fault tolerance with this setup and if either disk fails then all data will be lost. This is why this configuration is not recommended for mission-critical tasks. RAID 0 data recovery is considered one of the most challenging in the market and should only be attempted by professionals.<\/p>\n\n\n\n

How Does RAID 0 Work?<\/strong><\/h5>\n\n\n
\n
\"\"
How a RAID 0 configuration works (Image Credit: Petri\/Michael Reinders)<\/figcaption><\/figure><\/div>\n\n\n

A stripe includes data divided across SSDs or hard disks, and the striped unit defines the data slice on the individual drive. Since striping extends the data across physical drives, different disks can access contents, enabling reads and writes to be completed faster. <\/p>\n\n\n\n

Disk striping, without parity for handling data, tends to have zero fault tolerance and redundancy. This means that when a drive fails, all the data on the drive will be lost. A system stripes data on different levels, such as byte-level, bite-level, block-level, or partition-level. <\/p>\n\n\n\n

For example, a storage system has ten hard disks that strip a 64 KB block on the first, second, third, fourth, and fifth disks. It restarts from the first disk. Similarly, the system strips 1 MB of data on each of the 10 disks and returns to the first disks to repeat the procedure. <\/p>\n\n\n\n

Thus, RAID 0 is one of the best technologies used for storage. Though it is non-critical, it requires high-speed writing and reading. Caching video editing and live streaming video are some use cases of RAID 0 due to its speed and performance. <\/p>\n\n\n\n

RAID 0 vs. RAID 1:<\/strong><\/strong> What is RAID 1?<\/strong><\/h2>\n\n\n\n

RAID 1 is a type of disk array that uses mirroring to combine multiple disks together. Also referred to as disk mirroring, it is the RAID level that duplicates blocks of data on two disks. Everything that\u2019s stored on the first disk is identical on the second disk.<\/p>\n\n\n\n

In the case of RAID 1 technology, two or more identical hard disk drives are configured by grouping them simultaneously with configuration information known as mirroring. While they do not have to be exactly the same size, both disks must contain equal amounts of available space. Although both disks may contain the same information, they can be accessed independently for reading and writing purposes.<\/p>\n\n\n\n

You can set up two or more disks as an exact duplicate. If one disk fails then the other will immediately take over and you\u2019ll never know any difference until your failed disk has been replaced.<\/p>\n\n\n\n

If either disk runs out of available space then it\u2019s not possible to use RAID 1 anymore. Also, if one disk fails, there is no interruption to the user or the operating system. Windows, as an example, will have NO knowledge that one of the physical disks failed.<\/p>\n\n\n\n

Hopefully, you have an alerting set up so you can take care of replacing that failed disk. And, as soon as you do, the RAID controller will automatically start copying the data back onto the replaced disk. <\/p>\n\n\n\n

This increased data reliability makes RAID 1 data recovery more likely than RAID 0.<\/p>\n\n\n\n

How Does RAID 1 Work?<\/strong><\/h5>\n\n\n
\n
\"\"
How a RAID 1 configuration works (Image Credit: Petri\/Michael Reinders)<\/figcaption><\/figure><\/div>\n\n\n

The RAID array works if one drive is active and operational. As both the drives are operational, data can be read easily from them, which makes the operation fast. Since RAID 1 works well with SSDs for contemporary storage systems, many prefer \u201cdrive monitoring\u201d. <\/p>\n\n\n\n

However, writing operations are slower as each writing operation is done twice. During disaster recovery scenarios, only disk mirroring is helpful as it gives failover for the data that you need for mission-critical applications. <\/p>\n\n\n\n

If the primary drive gets damaged or is not operational, traffic instantly switches to the mirrored or secondary backup drives. Then, the mirror copy can become operational because the application software and operating system are cloned to the drive along with the information by the applications. <\/p>\n\n\n\n

Advantages and Limitations of RAID 0<\/strong><\/h2>\n\n\n\n
Advantages<\/strong><\/span><\/h5>\n\n\n\n