RAID (redundant array of independent disks) is a method of using multiple hard disk drives to act as one. RAID is used to increase hard drive speed and storage capacity, prevent data loss in the event that one of the disks in the array physically fails, or both. As far as the operating system concerned, a RAID array will appear to be a single logical drive. RAID uses a method called striping in which the drives are broken down into small partitions. These partitions, called stripes, are distributed such that each successive stripe is on a different drive.
Important: There are many different…
What if your computer memory system crashes, and you don’t have any backup of your data stored elsewhere? Crashing of the hard drive puts one in a difficult situation. The RAID (redundant array of independent disks) data storage system is designed in such a way that data recovery is possible even if storage devices fail. The RAID disks (tape disks or magnetic disks) are so arranged that it allows maximum redundancy (mirroring or repetition). Some RAID architectures are designed for faster read operation, some for faster write operation, while some are designed for both faster read and write operations. Hence,…
Western Digital manufactures desktop edition hard drives and RAID Edition hard drives. Each type of hard drive is designed to work specifically in either a desktop computer environment or a demanding enterprise environment.
If you install and use a desktop edition hard drive connected to a RAID controller, the drive may not work correctly unless jointly qualified by an enterprise OEM. This is caused by the normal error recovery procedure that a desktop edition hard drive uses.
When an error is found on a desktop edition hard drive, the drive will enter into a deep recovery cycle to attempt to repair the error, recover…
Advantages of RAID
RAID is an acronym for Redundant Array of independent Disks. With RAID enabled on a storage system you can connect two or more drives in the system so that they act like one big fast drive or set them up so that one drive in the system is used to automatically and instantaneously duplicate (or mirror) your data for real-time backup.
There are three reasons you might want a RAID system of drives.
- You need tons of storage space and you need it to be fast. (RAID 0)
- You want to instantaneously and automatically backup your data. (RAID 1)
- You want both. (RAID 5)
Which…
The NAS 4000 Series has a software controlled RAID 5 disk array, Dual 10/100 NIC’s, and two independent, mirrored Operating Systems.
What is Seagate BlackArmor and how does it differ from Maxtor BlackArmor?
The name BlackArmor was first introduced in 2008 as a portable Full Disc Encryption drive, however, at that time it was termed the Maxtor BlackArmor. Now we are extending the use of that product name under the Seagate brand. Seagate BlackArmor is now the family name for a suite of storage solutions packaged for small business. The Seagate BlackArmor NAS 440 and Seagate BlackArmor NAS 420 network storage servers are just the first two solutions in what will be a complete lineup of BlackArmor products, to include 4 Bay,…
The Maxtor Onetouch III Turbo drive will be released as a 600 gigabyte (GB) RAID 0 model, and a 1 terabyte (1 TB, 1000 GB) RAID 0/1 model.
RAID 1 can now be used with the OneTouch III Turbo 600 GB models with updated installation software.
Highlights
- User-configurable RAID solution
- Use RAID 0 for high performance disk striping or RAID 1 for automatic mirroring
- Up to 1 TB storage capacity
- FireWire® 800 for fast data transfer
- Oxford 924 chipset
- Pre-formatted for Mac; easily formatted for Windows®
- Available in RAID 0 only, and RAID 0 / RAID 1 (user configurable) configurations.
What does this mean?
Maxtor OneTouch III Turbo drives…
RAID – Wikipedia, the free encyclopedia
For instance, a 2-disk RAID 1 array loses half of the total capacity that …. For example, RAID 10 (or RAID 1+0) consists of several level 1 arrays of …
en.wikipedia.org/wiki/RAID
Standard RAID levels – Wikipedia, the free encyclopedia
A classic RAID 1 mirrored pair contains two disks (see diagram), which increases … Some older RAID 1 implementations would also read both disks …
en.wikipedia.org/wiki/Standard_RAID_levels
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RAID Level 1
Description: RAID 1 is usually implemented as mirroring; a drive has its data duplicated on two different drives using either a hardware RAID controller or …
www.pcguide.com/ref/hdd/perf/raid/…/singleLevel1-c.html
AC&NC | RAID.edu –…
RAID – Wikipedia, the free encyclopedia
RAID 0 (striped disks) distributes data across several disks in a way that gives …. When the top array is a RAID 0 (such as in RAID 10 and RAID 50) most …
en.wikipedia.org/wiki/RAID
Standard RAID levels – Wikipedia, the free encyclopedia
A RAID 0 can be created with disks of differing sizes, but the storage space added to … RAID 0 implementations with more than two disks are also possible, …
en.wikipedia.org/wiki/Standard_RAID_levels
More results from en.wikipedia.org »
RAID Level 0
Common Name(s): RAID 0. (Note that the term “RAID 0″ is sometimes used to mean not only the conventional striping technique described…
I am on a old AIX 4.3.3.0 trying to restore a backup on tape.
The device /dev/rmt1 exist end I succeed to execute the following commend with correct result:
tar -tvf /dev/rmt1
I obtained the contain of the tape backup. It take approx. 2 hours.
But when I try to make any restore, nothing happened, no message, nothing.
Ex. of commmand I’ve tried:
tar -xvf /dev/rmt1 ./oradata01/DBNAME/dbf/prodtai.dbf
tar -xvf /dev/rmt1 ‘./oradata01/DBNAME/dbf/prodtai.dbf’
tar -xvf /dev/rmt1
tar – xvvf ./oradata01/DBNAME/dbf/prodtai.dbf
No way.. and I do not know if tar generate some log somewhere …
Any ideas Welcome!
Not familiar with the AIX differences…
RAID (redundant array of independent disks) is a method of using multiple hard disk drives to act as one. RAID is used to increase hard drive speed and storage capacity, prevent data loss in the event that one of the disks in the array physically fails, or both. As far as the operating system concerned, a RAID array will appear to be a single logical drive. RAID uses a method called striping in which the drives are broken down into small partitions. These partitions, called stripes, are distributed such that each successive stripe is on a different drive.
