search for: raid50

We have several DELL servers with MD1000 connect to it. Server will install CENTOS 5.x X86_64 version. My questions are: 1. Which configuration have better performance RAID5, RAID50 or RAID60? 2. how much performance difference? ___________________________________________________ ??????? ? ???????????????? http://messenger.yahoo.com.tw/

we have DELL 6800 server with 12 internal disks in it. O.S. is CENTOS 4.6 and SCSI control card is PERC 4e/di. We plan to configure 4 disks (5,8,9,10) as RAID5 or RAID50. This logical volume will be use as file systems and store database backup files. Can anyone tell me which one is better on performance? Thanks. ?????????Yahoo!??????2.0????????????? - ????? -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists....

I've got an i386 server running centos 4.2 with 3 3ware controllers in it -- an 8006-2 for the system disks and 2 7500-8s. On the 7500s, I'm running an all software RAID50. This morning I came in to find the system hung. Turns out a disk went overnight on one of the 7500s, and rather than a graceful failover I got this: Jan 6 01:03:58 $SERVER kernel: 3w-xxxx: scsi2: Command failed: status = 0xc7,flags = 0x40, unit #3. Jan 6 01:04:02 $SERVER kernel: 3w-xxxx: sc...

Hello, Queries: 1 - what is the best RAID (0,1,5,10,50) for server running very, very VM instances ??? 2 - and config of stripes/element sizes (32, 64, 128, 256, etc, KB) ?? 3 - in the configuration of VM, exit one difference in performance between image file (disk:/) or LVM partition (phy:/) ??? any URL or docs for read about this theme ? mmm.. it is all for moment. thanks -- -- Victor

I have 8 WD SATA HDD with raid ready (3mbps) hard disks on a 8 port 3ware controller.(on raid 5.) Does anyone have a comparison on SATA raid and SAS raid disk. As you know SAS disk are very expensive and I would like to know from experts in the list who could suggest which of the following would be the best. Option 1) 2 servers each having 2.0TB raid disk with SAS drives, 2GB ram and standard

I have 12 750GB drive appliance from HP. I was wondering what is the best disk configuration? I suppose a large RAID5 would be bad since rebuilding would take too long. What do you recommend? TIA -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20080526/faf0ff6f/attachment-0005.html>

...> Like you, I run always raid1 but in the last year I run a raid5 with 3tb wd red for my personal backup server but never got an error for the time. What about RAID10 vs RAID5, RAID6? You loss half size but is performant as raid5 e reliable as raid1. Have you tried other type of raid like RAID50 or RAID60? About resync process, all type of raid level are disk killer during this procedure or only raid5 (and similar) is a disk killer? > I also don't have much experience with spare handling as I also don't do > it in my scenarios. > > However in general, I think the pr...

Hi All, I''ve just built an 8 disk zfs storage box, and I''m in the testing phase before I put it into production. I''ve run into some unusual results, and I was hoping the community could offer some suggestions. I''ve bascially made the switch to Solaris on the promises of ZFS alone (yes I''m that excited about it!), so naturally I''m looking

Hi people... Here we use Xen 4 with Debian Lenny... We''re using kernel 2.6.31.13 pvops... As a storage system, we use AoE devices... So, we installed VM''s on AoE partition... The "NAS" server is a Intel based baremetal with SATA hard disc... However, sometime I feeling that VM''s is so slow... Also, all VM has GPLPV drivers installed... So, I am thing about

If we''ve abandoned the idea of putting the number of redundant blocks into the top bits of the type bitmask (and I hope we have), then we''re fairly much there. Current code is at: git://, http://git.infradead.org/users/dwmw2/btrfs-raid56.git git://, http://git.infradead.org/users/dwmw2/btrfs-progs-raid56.git We have recovery working, as well as both full-stripe writes

...d1. I did RAID10 in the past but don't do it now. If you do large linear read/writes, RAID10 may perform better, if you have lots of independent and random read/writes, RAID1 may perform better. It really depends a lot on how the disk are used. > > Have you tried other type of raid like RAID50 or RAID60? Yes I did in the past it even adds more complexity than I like. > > About resync process, all type of raid level are disk killer during this > procedure or only raid5 (and similar) is a disk killer? I don't call it a disk killer, it's more that it detects disks errors...

...d down yet). I''d much prefer to stick with the separate bit flags for RAID5 and RAID6 (and RAID7, RAID8, or whatever we want to call the versions with 3, 4, or more redundant blocks). We have a 64-bit bitfield, after all -- we''re not exactly short of bits even once we start doing RAID50, RAID60, etc... diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 7326707..71dd726 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -655,8 +655,14 @@ struct btrfs_csum_item { #define BTRFS_BLOCK_GROUP_RAID1 (1 << 4) #define BTRFS_BLOCK_GROUP_DUP (1 << 5) #define BT...

...ses (Marvell 88SX6081 based, http://www.supermicro.com/products/accessories/addon/AoC-SAT2-MV8.cfm) 16 Seagate 250G drives, 8M cache, ST3250820AS Motherboard is a pull from an old Gateway dual Xeon server. PPS: Benchmark data (this will look awful with a proportional font): (With the Linux "RAID50" and "RAID60", I created two RAID5 and RAID6 arrays, respectively, then create a RAID0 array over the top of them. For "RAID10" I used the ''builtin'' RAID10.) Single drive bonnie++ -d /mnt/ -s 8g -u0 -f Version 1.03 ------Sequential Output------ --...

> On 28/10/2011 04:14, Jan Mikkelsen wrote: > >/ Hi, > />/ > />/ There is a patch linked to from this PR, which seems very similar: > />/ > />/ http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/140416 > />/ > />/ http://lists.freebsd.org/pipermail/freebsd-scsi/2011-March/004839.html > />/ > />/ The problem is also consistent with running

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Heyho guys, I'm running since years glusterfs in a small environment without big problems. Now I'm going to use glusterFS for a bigger cluster but I've some questions :) Environment: * 4 Servers * 20 x 2TB HDD, each * Raidcontroller * Raid 10 * 4x bricks => Replicated, Distributed volume * Gluster 3.4 1) I'm asking me, if I can

On 01/30/19 03:45, Alessandro Baggi wrote: > Il 29/01/19 20:42, mark ha scritto: >> Alessandro Baggi wrote: >>> Il 29/01/19 18:47, mark ha scritto: >>>> Alessandro Baggi wrote: >>>>> Il 29/01/19 15:03, mark ha scritto: >>>>> >>>>>> I've no idea what happened, but the box I was working on last week

Hello all, I am a complete newbie to OpenSolaris, and must to setup a ZFS NAS. I do have linux experience, but have never used ZFS. I have tried to install OpenSolaris Developer 134 on a 11TB HW RAID-5 virtual disk, but after the installation I can only use one 2TB disk, and I cannot partition the rest. I realize that maximum partition size is 2TB, but I guess the rest must be usable. For

Hi All, I am looking at ZFS and I get that they call it RAIDZ which is similar to RAID 5, but what about RAID 10? Isn''t a RAID 10 setup better for data protection? So if I have 8 x 1.5tb drives, wouldn''t I: - mirror drive 1 and 5 - mirror drive 2 and 6 - mirror drive 3 and 7 - mirror drive 4 and 8 Then stripe 1,2,3,4 Then stripe 5,6,7,8 How does one do this with ZFS?

Hi, I am new to virtualization and I am having the obvious hassle of choosing between Xen and KVM. Can Xen experts help me with this? Regards, Arindam _______________________________________________ Xen-users mailing list Xen-users@lists.xen.org http://lists.xen.org/xen-users

Hi Everyone, I have a Dell R210 server which has a Xeon X3430 Quad Core CPU (2.4Ghz x 4) with 8GB of RAM. I intend to use the H200 controller in a RAID1 setup How many VMs do you think I''d be able to run on this machine? Is 20 pushing it? I''d say most (if not all) guests would be in PV mode. Thanks _______________________________________________ Xen-users mailing list