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Different RAID systems have different effects on multiple hard drives.
RAID 0 combines storage together. Say you have 2 250GB HDDs combined with RAID 0: that you gives you, essentially, 500GB of storage. The problem with RAID 0 is that if one of the drives were to fail, then the other is to fail too, because of the way RAID 0 works by distributing strands of data over both disks. RAID 0 is sometimes not considered to be a true RAID system because of the lack of fault tolerance.
RAID 1 and 5 are more complex to describe, but they generally deal with the same thing: backups. Instead of combining storage, RAID 1 and 5 deal with clones of a particular drive to offer redundancy if one were to fail.
Say you have 2 250GB HDDs under RAID 1, essentially giving you 250GB of storage. If one drive were to fail, then the other would serve as a replacement if such were to occur.
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What are the advantages of RAID 0?
Some of the advantages of RAID O is that it is a very simple design, it's easy to implement, I/O performance is greatly improved and the data is broken down into blocks which means each block is written to a separate disk drive.
Is O(logn) better than O(n) in terms of efficiency?
Yes, O(logn) is more efficient than O(n) in terms of time complexity.
What is the time complexity, in terms of Big O notation, for an algorithm that has a factorial time complexity of O(n!)?
The time complexity of an algorithm with a factorial time complexity of O(n!) is O(n!).
If f(n) o(g(n)), does it imply that g(n) o(f(n))?
No, if f(n) o(g(n)), it does not necessarily imply that g(n) o(f(n)).
How does the time complexity of an algorithm with a runtime of O(log n) compare to that of an algorithm with a runtime of O(n)?
An algorithm with a runtime of O(log n) has a faster time complexity compared to an algorithm with a runtime of O(n). This means that as the input size (n) increases, the algorithm with O(log n) will have a more efficient performance than the one with O(n).
What are the basic requirements of a distributed file system?
o Transparency o Concurrency o Replication o Heterogeneity o Fault tolerance o Consistency o Security o Efficiency
How many type of raid?
Raid 0 :It is the Stripped Disk Array with no fault tolerance and it requires at least 2 drives to be implemented. Due to no redundancy feature, RAID 0 is considered to be the lowest ranked RAID level. Striped data mapping technique is implemented for high performance at low cost. The I/O performance is also improved as it is loaded across many channels. Regeneration, Rebuilding and functional redundancy are some salient features of RAID 0.Raid 1:It is the Mirroring (Shadowing) Array meant to provide high performance. RAID 1 controller is able to perform 2 separate parallel reads or writes per mirrored pair. It also requires at least 2 drives to implement a non-redundant disk array. High level of availability, access and reliability can be achieved by entry-level RAID 1 array. With full redundancy feature available, need of readability is almost negligible. Controller configurations and storage subsystem design is the easiest and simplest amongst all RAID levels.Raid 2:It is the combination of Inherently Parallel Mapping and Protection RAID array. It's also known as ECC RAID because each data word bit is written to data disk which is verified for correct data or correct disk error when the RAID disk is read. Due to special disk features required, RAID 2 is not very popular among the corporate data storage masses, despite the extremely high data transference rates.Raid 3 :RAID 3 works on the Parallel Transfer with Paritytechnique. The least number of disks required to implement the RAID array is 3 disks. In the RAID 3, data blocks are striped and written on data drives and then the stripe parity is generated, saved and afterwards used to verify the disk reads. Read and write data transfer rate is very high in RAID 3 array and disk failure causes insignificant effects on the overall performance of the RAID.Raid 4 :RAID 4 requires a minimum of 3 drives to be implemented. It is composed of independent disks with shared parity to protect the data. Data transaction rate for Read is exceptionally high and highly aggregated. Similarly, the low ratio of parity disks to data disks indicates high efficiency.Raid 5 :RAIDS 5 is Independent Distributed parity block of data disks with a minimum requirement of at least 3 drives to be implemented and N-1 array capacity. It helps in reducing the write inherence found in RAID 4. RAID 5 array offers highest data transaction Read rate, medium data transaction Write rate and good cumulative transfer rate.Raid 6 :RAIDS 6 is Independent Data Disk array with Independent Distributed parity. It is known to be an extension of RAID level 5 with extra fault tolerance and distributed parity scheme added. RAID 6 is the best available RAID array for mission critical applications and data storage needs, though the controller design is very complex and overheads are extremely high.Raid 7 :RAID 7 is the Optimized Asynchrony array for high I/O and data transfer rates and is considered to be the most manageable RAID controller available. The overall write performance is also known to be 50% to 90% better and improved than the single spindle array levels with no extra data transference required for parity handling. RAID 7 is registered as a standard trademark of Storage Computer Corporation.Raid 10 :RAID 10 is classified as the futuristic RAID controller with extremely high Reliability and performance embedded in a single RAID controller. The minimum requirement to form a RAID level 10 controller is 4 data disks. The implementation of RAID 10 is based on a striped array of RAID 1 array segments, with almost the same fault tolerance level as RAID 1. RAID 10 controllers and arrays are suitable for uncompromising availability and extremely high throughput required systems and environment
How was it the board of trades fault that the titanic sank?
It wasn't the B o T's fault that the Titanic sank. however, B o T regulations meant that there were not enough lifeboats.
What did they call the time period when people had to wear gas masks it started with an O?
Air raid
What does the flashing of the leds on a PLC controller mean?
The item for which the LED indicates is in a fault condition. Since there exist many brands of PLCs, there are many conditions indicated such as BUS FAULT, SYSTEM FAULT, I/O FAULT, COMMUNICATION FAULT, and many others.
What are the advantages of RAID 0?
Some of the advantages of RAID O is that it is a very simple design, it's easy to implement, I/O performance is greatly improved and the data is broken down into blocks which means each block is written to a separate disk drive.
What are the release dates for P-O-V- - 1988 Hiding and Seeking Faith and Tolerance After the Holocaust 18-8?
P-O-V- - 1988 Hiding and Seeking Faith and Tolerance After the Holocaust 18-8 was released on: USA: 30 August 2005
What is a 9 letter word using a mix of these letters -- e a t c o r e l n?
tolerance
What did the men do in viking life?
Eat potatoes and fish and raid other lands all together a good life :) o ya then they would die
Does vault have a long vowel sound?
No. It has the vowel pair sound AW, called a caret O, as in fault or wall.
Is rameere James gay?
yes he is.. but currently its not his fault that he just cant keep his hands off the young one :O
What is the name of the fault line in california?
A Airport Lake Fault Zone Alamo Thrust Arrastre Canyon Narrows Fault Arroyo Parida Fault Arrowhead Fault Ash Hill Fault Avawatz Mountains Fault B Bailey Fault Baker Fault Banning Fault Baseline Fault Bicycle Lake Fault Big Mountain Fault Big Pine Fault Bitter Springs Fault Blackwater Fault Blake Ranch Fault Blue Cut Fault Bowen Ranch Fault Brawley Fault Zone Brawley Seismic Zone Breckenridge Fault Broadwell Lake Fault Brown Mountain Fault Buck Ridge Fault Buena Vista Fault Bullion Fault Burnt Mountain Fault Back to top C Cabrillo Fault Cady Fault Calico Fault Camp Rock Fault Casa Loma Fault Cerro Prieto Fault Chatsworth Fault Chino Fault Clamshell-Sawpit Canyon Fault Clark Fault Clearwater Fault Cleghorn Fault Cleghorn Lake Fault Copper Mountain Fault Coronado Bank Fault Zone Coyote Creek Fault Coyote Lake Fault Crafton Hills Fault Zone Cucamonga Fault Zone D Death Valley Fault Zone Devil's Gulch Fault Dry Creek Thrust Duarte Fault Back to top E Eagle Rock Fault Earthquake Valley Fault El Modeno Fault Elmore Ranch Fault Zone El Paso Fault Elsinore Fault Zone Emerson Fault Etiwanda Avenue Fault Eureka Peak Fault Evey Canyon Fault F Frazier Mountain Thrust Furnace Creek Fault Zone G Galway Lake Fault Garlic Spring Fault Garlock Fault Zone Garnet Hill Fault Gillis Canyon Fault Glen Helen Fault Glen Ivy North Fault Glen Ivy South Fault Goldstone Fault Granite Mountains Fault Zone Grass Valley Fault Gravel Hills Fault Back to top H Harper Fault Zone Harper Lake Fault Helendale Fault Hidalgo Fault Hidden Springs Fault Hollywood Fault Holser Fault Homestead Valley Fault Hosgri Fault Zone Hot Springs Fault (San Jacinto area) Hot Springs Fault (Salton Sea area) Hunter Mountain Fault I Icehouse Canyon Fault Imperial Fault Independence Fault J Javon Canyon Fault Johnson Valley Fault Back to top K Kern Front Fault Kern Gorge Fault Kickapoo Fault Kramer Hills Fault L Laguna Salada Fault Landers Fault La Panza Fault Lavic Lake Fault La Vista Fault Leach Lake Fault Lenwood Fault Leuhman Fault Lion Canyon Fault Little Lake Fault Zone Little Pine Fault Llano Fault Lockhart Fault Lone Pine Fault Long Canyon Fault Los Alamitos Fault Los Alamos Fault Los Osos Fault Zone Ludlow Fault Lytle Creek Fault Back to top M Malibu Coast Fault Manix Fault Mesa - Rincon Creek Fault Mesquite Lake Fault Mill Creek Fault Mint Canyon Fault Mirage Valley Fault Zone Mission Creek Fault Mission Hills Fault Morales Fault Morongo Valley Fault Mt. General Fault Mt. Poso Fault Mule Spring Fault N Newport-Inglewood Fault Zone Newport-Inglewood - Rose Canyon Fault Zone North Branch San Andreas Fault North Frontal Fault Zone (of San Bernardino Mountains) North Lockhart Fault Northridge Hills Fault Northridge Thrust O Oak Ridge Fault Oak View Fault Ocotillo Ridge Fold Old Woman Springs Fault Ord Mountains Fault Owens Valley Fault Zone Owl Lake Fault Ozena Fault Back to top P Palos Verdes Fault Zone Panamint Valley Fault Zone Pelona Fault Peralta Hills Fault Pico Thrust Pine Mountain Fault Pinto Mountain Fault Pipes Canyon Fault Pisgah Fault Pitas Point Fault Pleito Thrust Point Loma Fault Poso Creek Fault Premier Fault R Raymond (or Raymond Hill) Fault Red Hill Fault Red Hills Fault Red Mountain Fault Redondo Canyon Fault Red Pass Lake Fault Rico Fault Rinconada Fault Rodman Fault Rose Canyon Fault Zone Back to top S Salton Creek Fault San Andreas Fault Zone San Antonio Fault San Bernardino Fault San Cayetano Fault San Clemente Fault San Diego Trough Fault Zone San Fernando Fault San Gabriel Fault San Gorgonio Mountain Fault San Gorgonio Pass Fault Zone San Jacinto Fault Zone San Jose Fault San Juan Fault San Rafael Fault Santa Ana Fault (Ojai area) Santa Ana Fault (San Bernardino area) Santa Cruz Island Fault Santa Cruz-Santa Catalina Ridge Fault Zone Santa Monica Fault Santa Rosa Fault Santa Rosa Island Fault Santa Susana Fault Zone Santa Ynez Fault Sierra Juarez Fault Zone Sierra Madre Fault Zone Sierra Nevada Fault Zone Silver Reef Fault Silverwood Lake Fault Simi Fault Sky Hi Ranch Fault Slide Canyon (or Slide Peak) Fault Soda Mountain Fault Soledad Fault South Branch San Andreas Fault South Bristol Mountains Fault South Cuyama Fault South Lockhart Fault South San Antonio Fault Spring Fault Springs Fault Stoddard Canyon Fault Superstition Hills Fault Superstition Mountain Fault Back to top T Tank Canyon Fault Tiefort Mountain Fault Zone Towne Pass Fault Tunnel Ridge Fault V Vasquez Creek Fault Ventura Fault Verdugo Fault Villanova Fault Vincent Thrust W Waterman Canyon Fault West Calico Fault Wheeler Ridge Fault Whittier Fault White Wolf Fault Wienert Fault Wildomar Fault Willard Fault Wilson Canyon Fault Wilson Creek Fault Y Yuha Wells Fault 247 as of November 2010
