Why is RAID0 faster?

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Raid0 array stresses only 1 disk out of 3

Hi there, I've setup a raid0 array of 3 identical disks using : mdadm --create --verbose /dev/md0 --level=stripe --raid-devices=3 /dev/sdb1 /dev/sdc1 /dev/sdd1I'm using dstat to monitor the disk activity : dstat --epoch -D sdb,sdc,sdd --disk-util 30The results show that the stress is not...

2. Solaris

Cloning RAID0 drives, Solaris 10u11

Hello all, this is my first time posting here. Where I work we have multiple servers (x3-2's) running Solaris 10u11 with 2 drives configured as RAID0, 300GB per. There are 4-6 open slots for drives to clone to. Past attempts to clone/backup these drives has failed. One of the machines is...

3. Hardware

HP9000 Server - Stuck on RAID0

Hey all, I've got an old HP9000 L1000 server with HP-UX installed. The drives that the OS is running on are in RAID0. I am concerned for the reliability of the server. The four hard drives in the front of the server are LVD 18.2 drives. I know with RAID0, if one drive fails, they all fail. ...

4. UNIX for Dummies Questions & Answers

Which system is faster?

i'm trying to decide if to move operations from one of these hosts to the other. but i cant decide which one of them is the most powerful. each host has 8 cpus. HOSTA processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 44 model name : Intel(R) Xeon(R) CPU ...

5. UNIX for Advanced & Expert Users

live upgrade with raid0 soft partitions

Hi, I have this mirrored system with soft-partitions. I have a difficulty determining the lucreate cmd in this env. #metastat -p d0 -m d10 d20 1 d10 1 1 c1t2d0s0 d20 1 1 c1t3d0s0 d1 -m d11 d21 1 d11 1 1 c1t2d0s5 d21 1 1 c1t3d0s5 d100 -p d1 -o 58720384 -b 8388608 d200 -p d1 -o...

6. Linux

Raid0 recovery from external HD

Hi, I have the Lacie Big Disk, which is a external hard drive enclosure in a hardware RAID0 array of 2x250GB disks. The RAID controller seems to have died, leaving me with 2 working hard drives but no way to get the data. I tried hooking the drives up to a windows machine and using Raid...

7. UNIX for Dummies Questions & Answers

Which command will be faster? y?

i)wc -c/etc/passwd|awk'{print $1}' ii)ls -al/etc/passwd|awk'{print $5}'

8. Solaris

Solaris RAID0 doubt...

friends, Suppose I am typing metastat command and it is showing: d100: Concat/Stripe Size: 369495 blocks (180 MB) Stripe 0: (interlace: 32 blocks) Device Start Block Dbase Reloc c1d0s0 16065 Yes Yes c1d0s1 0 No Yes...

9. Shell Programming and Scripting

Faster then cp ?

Hi , I need to copy every day about 35GB of files from one file system to another. Im using the cp command and its toke me about 25 min. I also tried to use dd command but its toke much more. Is there better option ? Regards.

10. IP Networking

Mandrake should be faster.

For some reason 8.1 Mandrake Linux seems much slower than Windows 2000 with my cable modem. DSL reports test says they conferable speed with Windows2 though. This is consistant slow with both of my boxes, at the same time. Linux used to be faster, but not with Mandrake. Any way to fix this?

LEARN ABOUT REDHAT

mkraid

mkraid(8)						      System Manager's Manual							 mkraid(8)

NAME

       mkraid - initializes/upgrades RAID device arrays

SYNOPSIS

       mkraid [--configfile] [--version] [--force]	     [--upgrade] [-cvfu] </dev/md?>+

DESCRIPTION

       mkraid  sets  up  a  set of block devices into a single RAID array.  It looks in its configuration file for the md devices mentioned on the
       command line, and initializes those arrays.  mkraid works for all types of RAID arrays (RAID1, RAID4, RAID5, LINEAR and RAID0).

       Note that initializing RAID devices destroys all of the data on the consituent devices.

OPTIONS

       -c, --configfile filename
	      Use filename as the configuration file (/etc/raidtab is used by default).

       -f, --force
	      Initialize the consituent devices, even if they appear to have data on them already.

       -h, --help
	      Displays a short usage message, then exits.

       -o, --upgrade
	      This option upgrades older arrays to the current kernel's RAID version, without destroying data. Although the utility detects  vari-
	      ous pitfalls like mixed up disks and inconsistent superblocks, this option should be used with care.

       -V, --version
	      Displays a short version message, then exits.

NOTES

       The  raidtools  are  derived from the md-tools and raidtools packages, which were originally written by Marc Zyngier, Miguel de Icaza, Gadi
       Oxman, Bradley Ward Allen, and Ingo Molnar.

BUGS

       Probably many.

SEE ALSO

       raidtab(5), raidstart(8), raid0run(8), raidstop(8)

																	 mkraid(8)

UNIX for Dummies Questions & Answers