search for: disk_optimization

Dear all, In "HowTos/Disk_Optimization", the calculated value of stride size and stripe width appears to have the "K" suffix incorrectly appended to them. Eg: * (64K/4K) = 16K * (3*16K) = 48K * (16K+16K) = 32K The values provided on the mkfs.ext3 command line however, do drop the "K" suffix. I...

...dit one page then I found out i have to also get on this mailing list to get permission... Why can't the wiki page display that I have no permission to edit? and also why can't edits be sent to a moderation queue for approval? Anyways this is my request to edit http://wiki.centos.org/HowTos/Disk_Optimization page as it has a obvious error. I recently became aware of a error on the http://wiki.centos.org/HowTos/Disk_Optimization page. The stride is calculated for the one spindle not the group. For that example it is 64K / 4K = a stride of 16, also the stride width is not the 4 disks in raid 5 as one is...

Hello all, I have yesterday after some typos, sent my ext3 RAID5 array to the void... I want to recreate it now, but I read on http://wiki.centos.org/HowTos/Disk_Optimization that you can optimize the filesystem on top of the RAID. Will this wiki article be exactly the same for XFS? Is it worth the trouble to also create an LVM volume on the RAID array? Regards, Coert

All, I have a question about calculating the value for the -E stride option to mke2fs. The mke2fs man page says stride=stripe-size Configure the filesystem for a RAID array with stripe-size filesystem blocks per stripe. So stride = size of stripe/blocksize. The size of a stripe is the RAID chunk size * the number of drives in the RAID. My question: are parity disks

Hi all, I have a 3G AM2 quad core CPU... x86_64 centos 5.3 When I am doing backing up to my external USB drive my system becomes sluggish. Clicking on a thunderbird compose takes some time to pop up the window. Typeing doesnt keep up etc... Is there something I can change so this backup doesnt slow my system down so much? I dont see HOW it can be taking so much CPU. top at times shows 0 idle

Dear list, I thought I'd just share my experiences with this 3Ware card, and see if anyone might have any suggestions. System: Supermicro H8DA8 with 2 x Opteron 250 2.4GHz and 4GB RAM installed. 9550SX-8LP hosting 4x Seagate ST3250820SV 250GB in a RAID 1 plus 2 hot spare config. The array is properly initialized, write cache is on, as is queueing (and supported by the drives). StoreSave

Hi folks. I'm posting this to both the Fedora as well as the CentOS lists in hopes that somewhere, someone can help me figure out what's going on. I have a dual Xeon 3GHz server that's performing rather slow when it comes to disk activities. The machine is configured with a single 160 GiB OS drive (with CentOS 5.0) and 4x500 GiB drives setup in a RAID-5 configuration.

I?m looking for advice and considerations on how to optimally setup and deploy an NFS-based home directory server. In particular: (1) how to determine hardware requirements, and (2) how to best setup and configure the server. We actually have a system in place, but the performance is pretty bad---the users often experience a fair amount of lag (1--5 seconds) when doing anything on their home