LinuxQuestions.org
Download your favorite Linux distribution at LQ ISO.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Hardware
User Name
Password
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?

Notices

Reply
 
Search this Thread
Old 09-24-2005, 06:54 PM   #1
abefroman
Senior Member
 
Registered: Feb 2004
Location: Chicago
Distribution: CentOS
Posts: 1,266

Rep: Reputation: 53
Should I enable write caching on my raid array?


Should I enable write caching on my raid array?

The default is enabled but it gives a warning saying if the raid controller loses power the data will be lost.

What do most people have it set as, enabled or disabled?
 
Old 09-26-2005, 04:38 PM   #2
KnightHawk
Member
 
Registered: Aug 2005
Posts: 128

Rep: Reputation: 15
I'm going to assume your not using a high-end battery backed up raid card here......



That being the case.... you should probably leave write-caching off. Unless you can live with the risk that someday you may be writing a long word document and then save it... but WHAM the power goes out... and now that document even though you saved it... is no longer there... because the save was stored in the cache which was lost during the power outage.

There is a noticeable performance benefit to it... but only during writes..... which if your the average desktop user does not happen often enough. Swapfile performance could be improved... but if your running a system with adequate memory I wouldn't bother... and furthermore if you what you are doing uses alot of swapfile... then you probably shouldn't be using write-cacheing anyway due to instabilities caused by excessive page file access.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to disable read and write caching in filesystems Kumar Programming 1 11-11-2005 03:36 AM
Raid Array wwnexc Linux - Hardware 1 09-25-2005 05:47 PM
how to write an image from a data array aw_wolfe Programming 4 05-05-2005 05:53 PM
hdparm write caching setting nouse66 Linux - Hardware 3 03-10-2003 10:13 PM
power for raid array rtp405 Linux - Hardware 1 02-05-2003 05:36 PM


All times are GMT -5. The time now is 07:49 AM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration