Why do you use RAID 1 instead of RAID 5?
Xssist™ Group Pte. Ltd. (Singapore) Frequently Asked Q...RAID 1 has better performance compared to RAID 5, in particular, the write performance is much better. As web and email servers does a lot of writes, to log files, email spools etc, RAID 5 is not suitable for the server. In terms of redundancy, RAID 5 has 1 parity drive in an array (of possibly 7 drives). With a failure of 1 drive, the array performance is badly degraded. This may lead to much higher IO waits, and the server will be unresponsive.
Related QuestionsWhat is RAID 5?
Kaleidescape - FAQ (Frequently Asked Questions)RAID Level 5 is a type of RAID that uses block-level striping (spreading out the blocks of each file across multiple disk drives) and block-interleaved distributed parity to spread the redundant parity information used to achieve fault tolerance across all the disks in the array. If any disk fails, the distributed parity data are used to compute the contents of the "virtual" (failed) disk. An advantage of RAID 5 is that there is no single dedicated parity disk causing a write bottleneck.
Related QuestionsWhat are the differences between RAID 0, RAID 1, RAID 5 and RAID 5 With Hot Spare?
Untitled DocumentUses Space Striping to combine multiple disk drives into one large volume. (One large virtual disk) There is no fault tolerance. No fault tolerance. If any of the disk drives fails, the whole volume will fail and all data will be lost. Provides data stripping (spreading out the blocks of each file across multiple disks) but no redundancy. This improves performance but does not deliver fault protection.
Related QuestionsWhen would it be appropriate to use RAID 5?
FAQ - InfrantWikiWhere X-RAID excels at large sequential transfers, RAID 5 performs better in smaller random access request pattern, fitting better in most office environments. Full volume management is available when you select RAID 5 (or Flex-RAID) mode. You can delete the existing volume and recreate one or more volumes, with each volume with different snapshot space and quota specification.
Related QuestionsHow do I configure a RAID 1 or RAID 5 volume with a spare disk?
FAQ - InfrantWikiAfter installation, delete the existing RAID volume and recreate it with one disk configured as a hot spare. Please be aware that X-RAID does not support hot spare.
Related QuestionsWhat do I use instead of infinity for my Lab 1 implementation?
CS 241 Frequently Asked Questions (FAQs)In the Java implementation (in FastClosestPair.java) I've defined INF to be the maximum double possible which will work fine here since the maximum distance for the coordinate ranges you are given will always have a distance less than this quantity. For those using C++, I've already defined maxfloat as 400000.0 in the provided stdinc.h which is larger than the distance between any two points for the coordinate ranges that are used.
Related QuestionsKaleidescape - FAQ (Frequently Asked Questions)RAID Level 5 is a type of RAID that uses block-level striping (spreading out the blocks of each file across multiple disk drives) and block-interleaved distributed parity to spread the redundant parity information used to achieve fault tolerance across all the disks in the array. If any disk fails, the distributed parity data are used to compute the contents of the "virtual" (failed) disk. An advantage of RAID 5 is that there is no "hot disk" to cause a write bottleneck.Related Questions
I Venture Circulation - FaqRaid Level 1 means that one drive mirrors the other. In the event that one of your drives fails, the other will immediately continue to serve data. An additional feature with Raid is that, if one drive is overtaxed, the overflow requests will be handled by the second drive. RAID1 requires two drives, but you will lose the disk space of one of the drives. This means, for example, that two 36GB drives will only give you a total of 36GB of disk space.Related Questions
Why cannot use 4 HDDs with RAID O (striping) or RAID 1 (mirroring) function on AV40R?
Shuttle * Products * Mainboards * Socket 478 * VIA-chipset *...RAID 0 or RAID 1 function is only supported by the master channel of Promise ATA RAID (Promise PDC20265R chip). The HDD connects to the slave channel of Promise ATA RAID are to be as ATA HDD.
Related QuestionsI only want to promote 1 song instead of all 5 songs on my player, can you guys do this?
Get Myspace Plays.com - It's the Plays that Count! How it Wo...absolute Yes! When submitting your order, you will recieve an email confirmation from us at that time you can specify your song choice or email us anytime before we process your order.
Related QuestionsWhat is RAID Level 1?
Dedicated Hosting Services :: Frequently Asked QuestionsRAID Level 1 is a disaster recovery method where one hard drive mirrors a second one. In the event that one of your drives fails, the other will immediately continue to serve data. An additional feature with RAID is that, if one drive is overtaxed, the overflow requests will be handled by the second drive. RAID 1 requires two drives, but you will lose the disk space of one of the drives.
Related QuestionsWhy is Raid 1 important?
DrakNet-Welcome to Drak.Net Web HostingRAID 1 is a particular type of RAID technology which ensures that all data is duplicated on pairs of disks simultaneously. This ensures that in the event of a hard drive failure, the server can switch to the other disk with no interruption in service. Also, if multiple requests for the same data are made, demand can be distributed between two disk copies therefore decreasing response time for data access.
Related QuestionsCan the VPS come with RAID 1?
Xssist™ Group Pte. Ltd. (Singapore) Frequently Asked Q...Absolutely. We can provide software RAID1 for your VPS; and additional harddisks if required for your backups.
Related QuestionsIf I have a single big capacity hard drive then why to use RAID instead of Hard drives?
RAID Recovery Frequently Asked Questions - FAQRAID (Redundant Array of Inexpensive Disks) systems are faster and more durable than single large hard disk drives. A RAID system stripes or mirrors your data across multiple hard disk drives. Therefore, when you access your data, all the disks are working at the same time, giving a major increase in speed. The RAID hardware controller also contains a large memory cache which dramatically increases performance.
Related QuestionsWhat is the advantage of using X-RAID over RAID 5?
FAQ - InfrantWikiThe ReadyNAS systems support both RAID levels. RAID 5 is an industry-standard RAID level whereas X-RAID is an Infrant patented RAID technology that simplifies and automates the RAID management process. X-RAID utilizes a one-volume technology with built-in volume expansion support, either by adding more disks or by replacing existing disk with larger capacity disks. For instance, you can start out with one disk, and add up to 3 more disks when you need more capacity or when you can afford them.
Related QuestionsCan RAID 1 be combined with another type of RAID, such as RAID 0?
RAID 1 Data Recovery FAQ | Vantage Data Recovery (800)487-56...The combination of a mirrored configuration with striping added is referred to as RAID 1+0 (also called RAID 10). In this scenario, the configuration will provide mirroring (RAID 1) across two (2) or more drives and will "stripe" the data in real-time to a second mirrored drive set. This unique combination will provide data redundancy and some speed advantages, but it does so at the expense of usable storage space.
Related QuestionsWhy should I use SpeechStudio Suite instead of SAPI 5 directly?
SpeechStudio Inc. Frequently Asked QuestionsSAPI 5 is a lot easier to use than SAPI 4.0, its predecessors and similar products, but it is still quite difficult. Here are some reasons to use SpeechStudio Suite: SpeechStudio Suite handles a lot of problems for you, including automatic grammar construction and engine repair, context switching, and coordination among multiple speech-enable applications. SpeechStudio grammars tie voice commands directly to their actions.
Related QuestionsWhat's with the levels 1 through 5? Which level do I want to use?
Autoclave - Secure Disk DeletionAll levels erase the disk completely. The only difference is how difficult it would be for someone to recover data from the disk using sophisticated recovery tools (including scanning tunneling electron microscopes). Level 1 is the fastest, level 5 is the slowest. Level 5 is the most secure, level 1 is the least secure. I personally couldn't recover anything from a disk that had been cleaned with level 1, but someone with the know-how and a few thousand dollars could.
Related QuestionsQuestion 1: What is Xserve RAID?
Xserve RAID: Frequently Asked Questions (FAQ) (1 of 2)Answer: Xserve RAID is a rack-optimized storage solution for Xserve and compatible Power Macintosh computers capable of up to 14 hard drives for a total of up to 5.6 terabytes (TB) of storage.
Related QuestionsWhat is the definition of a "RAID 1" volume?
RAID 1 Data Recovery FAQ | Vantage Data Recovery (800)487-56...RAID 1" refers to a "Redundant Array of Inexpensive (or Independent) Disks" that have been established in a Level 1, or mirrored, drive set. A RAID 1 volume is a set of disk drives that are configured for data to be written to 2 volumes simultaneously. This configuration provides complete data redundancy in the event of a drive failure.
Related QuestionsWhat are the arguments against RAID 1 configurations?
RAID 1 Data Recovery FAQ | Vantage Data Recovery (800)487-56...RAID 1 (mirroring) results in loss of half of the physical storage capacity of the drives comprising the volume. For example, if two (2) 500GB hard drives are configured as a RAID 1 volume, only 500GB is available for data storage. Using the same drives in a RAID 0 (striped) configuration, total data storage would equal 1000GB (or approximately 1 terabyte). Also, if damaged or corrupted data is written to one drive, it is also written to the second drive.
Related QuestionsCan I use XactCopy in a system with RAID?
Product FAQ - XactCopy Backup and Restore software - DuocorYes, XactCopy can be configured to work in a RAID environment. However, if you are more interested in protecting your OS and Applications than Data loss, System Guardian may be a better solution.
Related QuestionsCan I use SystemGuardian XC/2000 in a system with RAID?
SystemGuardian XC/2000 Technical FAQ - DuoCor Technical Supp...Yes, SystemGuardian XC/2000 can be configured to work in most RAID environments. Because some combinations of controllers may not be supported, please download a fully functional 30 day trial copy to ensure the backup drive is bootable.
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