Hi There are Perc 2 and Perc3 Controllers available for RAID. These are SCSI controllers by Adaptec / AMI. Depending on your requirement, you can make RAID 0 /1 / 5 or 0+1 Usually except swap all others can be put on RAID.
Regards, --Naresh --- "Jasmeet S. Virdi" <[EMAIL PROTECTED]> wrote: > Thanx for the response guys .. > I have experience of RAID on windows boxes, but that > was a different > talk altogether. > Right now I have a couple of partitions on my linux > box and have > narrowed down to mirroring/RAID1 using software, cud > u suggest what all > should I put on RAID. > I have > /boot separate partition > /data separate partition > /app separate partition > Rest all under / partition > /data partion is something like the application > data. And /app is the > installed application. > > I reckon /boot, /app and my /data partitions would > be the likely > candidates. Do u think / partition should also be > mirrored ?? > > ALSO if I go in for HARDWARE RAID, could you gimme > an idea as to what > all RAID CONTROLLERS work with Linux ?? > > Thanx > -js > > > -----Original Message----- > From: > [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > On > Behalf Of Gaurav Jain > Sent: Saturday, June 21, 2003 3:07 AM > To: The Linux-Delhi mailing list > Subject: RE: [ilugd] RAID 1/Mirroring on linux > > > for critical servers and data, i would still prefer > hardware RAID. > also, from personal experience, backups are still a > better solution. > maybe with LVS even better, but that depends on > nature of application. > > > -----Original Message----- > From: > [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > Behalf Of Mithun Bhattacharya > Sent: Friday, June 20, 2003 9:48 PM > To: The Linux-Delhi mailing list > Subject: Re: [ilugd] RAID 1/Mirroring on linux > > > > --- "Jasmeet S. Virdi" <[EMAIL PROTECTED]> wrote: > > Hi all, > > Hope to get some antennas twitching this time .. > I think someone > > talked about RAID 1 on the list sometime back. I > want to understand > > the > > best practices and how to go about doing it. Ne > pointers ... > > Linear : no redundancy - preferred where data > redundancy is not > required and multiple physical disks need to me > merged to create a > single large partition. > RAID0 : no redundancy - preferred where data > redundancy data is split > into small chunks and spread uniformly over the > complete device - > possible use might be a replicated database since > throughput is maximum > in this. > RAID1 : Data on one disk is mirrored completely onto > another. Requires > equal sized disks or the device will provide disk > space equal to the > smaller of the two disks. Fast throughput with > redundancy - can survive > one disk failure. Highest throughput of all > redundancy enabled RAID > system. > RAID4 : Parity for n-1 disks is calculated and > stored on the remaining > disk Most optimum usage of disk space but also the > slowest of all the > RAID systems. Equal sized disks required as in > RAID1. > RAID5 : Parity calculated as in RAID4 but data is > striped across the > device. Optimum usage of disk space speed enhanced > appreciably due to > striping. Recommended where many small sized disks > are available and > throughput is important but not of highest > importance. Equal sized > disks required. > > In a production environment hardware RAID cards are > preferred since it > removes a layer of overhead from the kernel. > Database servers are preferably not kept on RAID > devices or if needed > then on RAID0. RAID5 is best kept for internal > servers. If less that 3 > disks are being used to create a RAID device go for > RAID1 since parity > calculation has a overhead of its own. > /boot can be on a software Linear or a RAID1 device. > For all other > software RAID devices /boot needs to exist on a non > software RAID > device. > > As for how to go about doing it RedHat allows you to > setup RAID1 and > RAID5 during installation. For other complex > scenarios the Software > RAID HOWTO is best read end to end :). > > > Mithun > > __________________________________ > Do you Yahoo!? > SBC Yahoo! DSL - Now only $29.95 per month! > http://sbc.yahoo.com > > _______________________________________________ > ilugd mailing list > [EMAIL PROTECTED] > http://frodo.hserus.net/mailman/listinfo/ilugd > > _______________________________________________ > ilugd mailing list > [EMAIL PROTECTED] > http://frodo.hserus.net/mailman/listinfo/ilugd > > > _______________________________________________ > ilugd mailing list > [EMAIL PROTECTED] > http://frodo.hserus.net/mailman/listinfo/ilugd ===== -- Naresh __________________________________ Do you Yahoo!? SBC Yahoo! DSL - Now only $29.95 per month! http://sbc.yahoo.com _______________________________________________ ilugd mailing list [EMAIL PROTECTED] http://frodo.hserus.net/mailman/listinfo/ilugd
