Hi James, Thanks for your information.
Where can I have that chapter downloaded ? Is its ebook available ? B.R. Stephen At 03:33 AM 12/19/2001 -0700, you wrote: >Hi, the Berkley Raid definitions define RAID 5 as striping with interleved >parity. because of the number of increased writes and read to commit an >actual write to disk, this method is normally used with caching in RAM >using fast writes as a method to improve performance. Striping + >Mirroring is RAID 0+1, and Mirroring + Striping is RAID 1+0. If you have >a choice use RAID 1+0 even though it requires twice the number of disks >and or controllers. The reference for all of this stuff >is "Configuration and Capacity Planning for Solaris Servers" Chapter >7. It is required reading even if you are on another hardware platform, >because the generic information is invaluable. > >James Hartley > > > >Ed Wilts wrote: >> >>On Mon, 2001-12-17 at 23:27, Stephen Liu wrote: >> >>> >>>One additional question I expect to ask, in my case, whether it is >>>advisable to apply RAID to build the Web Server simultaneously because the >>>configuration of Apache, PHP, MySQL will keep me quite busy (I did it once >>>in 2 years ago). Is RAID difficult to set up ? Which RAID, RAID 0+1, >>>RAID 5, etc. shall be more applicable to my case ? >> >> >>RAID 0 is striping and is used *only* for performance reasons. If you >>don't think you'll need the additional performance, don't use it. You >>will lose redundancy in favor of the performance. If either drive >>fails, you lose your data. >> >>RAID 1 is mirroring. When you do your initial Red Hat Linux 7.2 >>install, you can configure this, and it's easy - it's well documented in >>the Installation Guide and takes an extra 5 or 10 minutes to set up, and >>then it just runs without you having to do anything else. It's what I >>run at home. >> >>RAID 5 is striping + mirroring. I recommend that this not be done on >>IDE drives unless you've invested in extra controllers. You need at >>least 3 drives to make a RAID 5 set. >> >>RAID 0+1 will give you the highest performance at the expense of the >>most drives. >> >>For a home system, RAID 1 is no longer out of the reach of the average >>PC purchaser. I added 2 40GB ATA100 dri >>ves on the Promise TX2 >>controller for about $240. I mirror the first 10GB of data so that >>leaves me 70GB of usuable space. That's a lot of disk space for not a >>lot of money. A few years ago, this would have been prohibitively >>expensive. Naturally, I still do backups of my data (to hard drives, >>not tape). >> _______________________________________________ Redhat-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
