search for: raid5s

Hi all, Sorry for the OT. I've got an IBM N3300-A10 NAS. It runs Data Ontap 7.2.5.1. The problem is, from the docs it says that it only supports either RAID-DP or RAID4. What I want to achieve is Max Storage Capacity, so I change it from RAID-DP to RAID4, but with RAID4, the maximum disk in a RAID Group decrease from 14 to 7. In the end, either using RAID-DP or RAID4, the capacity is the same.

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

Hi, I've done some strange(?) experiments and I managed to get a panic of type "baddir" and just now another one that only rebooted my system instantly without writing a vmcore. I don't know if this is important. I could not find any information on how gvinum detects failed hard disks. That's why I tried something really simple. Steps to reproduce: 1) dd if=/dev/zero of=a

I was hoping someone could either help me or point me in the direction of a resource. I have searched the web for any howto on repairing a failed array, but keep coming up short. I have a home file server running a RAID 5 array that now will not mount my array. I believe it is telling me there is a problem with the second drive. The basics: RedHat 8.0 kernel 2.4.20-28.8 don't know the

I made a btrfs on five disks using RAID5 (-d raid5 for mount option). When a power failure occurs, I can not remount btrfs after my system reboots. Dmesg for remount is presented as following: [ 192.713953] bio: create slab <bio-1> at 1 [ 192.716230] Btrfs loaded [ 192.717177] device fsid a0dff7ea-9354-43fd-8516-0e17f370991d devid 1 transid 6 /dev/sdb [ 192.717712] btrfs: disk space

Hello, I have strange behaviour on a server that I can't get a handle on. I have a reasonably powerful server running VMware server 1.0.4-56528. It has a RAID5 build with mdadm on 5 SATA drives. Masses of ram and 2 XEON CPUs. But it stutters. Example : fire up vi, press and keep finger on i. After filling 2-3 lines, the display is stopped for 2-12 seconds. Then they continue. This

Hi list, I am using kernel 3.9.0, btrfs-progs 0.20-rc1-253-g7854c8b. I have a three disk array of level single: # btrfs fi sh Label: none uuid: 2e905f8f-e525-4114-afa6-cce48f77b629 Total devices 3 FS bytes used 3.80TB devid 1 size 2.73TB used 2.25TB path /dev/sdd devid 2 size 2.73TB used 1.55TB path /dev/sdc devid 3 size 2.73TB used 0.00 path /dev/sdb

I'm experiencing strange behavior from my ext3 RAID5 array and my Fedora Core 2 system. Before I go crazy varying all sorts of tuning parameters, I thought some list subscribers might provide me with useful advice. The problematic array is: 3x Promise Technology Ultra 100 TX2 PCI cards 6x Maxtor 250GB IDE drives (one drive per cable) RAID level 5, 128Kb chunk size, EXT3: "mkfs -t ext3

So when I couldn't get the raid10 to work, I decided to do raid5. Everything installed and looked good. I left it overnight to rebuild the array, and when I came in this morning, everything was frozen. Upon reboot, it said that 2 of the 4 devices for the raid5 array failed. Luckily, I didn't have any data on it, but how do I know that the same thing won't happen when I have

hi, after we switch our servers from centos-3 to centos-4 (aka. rhel-4) one of our server always crash once a week without any oops. this happneds with both the normal kernel-2.6.9-11.EL and kernel-2.6.9-11.106.unsupported. after we change the motherboard, the raid contorller and the cables too we still got it. finally we start netdump and last but not least yesterday we got a crash log and a

Hello all! I've got CGYWIN running on an NT4 server, which in turn allows me to run Rsync as a daemon on this system. And might I say, it works most excellently, except for one flaw. It doesn't work on my raid drive(s). I have a 56 gig NTFS RAID5 drive running off an adaptec raid-port controller card. I have two other drives in this system, a 4 gig SCSI boot drive, and 60 gig IDE

Hello, ?s there anyway to create raid6 or raid5 level glusterfs installation ? >From docs I undetstood that I can do raid1 base glusterfs installation or radi0 (strapting data too all servers ) and raid10 based solution but raid10 based solution is not cost effective because need too much server. Do you have a plan for keep one or two server as a parity for whole glusterfs system

I have 4 disks in a RAID5 array. I want to add a 5th. So I did mdadm --add /dev/md3 /dev/sde1 This worked but, as expected, the disk isn't being used in the raid5 array. md3 : active raid5 sde1[4] sdd4[3] sdc3[2] sdb2[1] sda1[0] 2930279808 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU] So then I tried the next step: mdadm --grow --raid-devices=5 /dev/md3 But now I have

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/

I remember that there used to be a problem with disk quotas on Ext3 and Raid5 on the 2.4.x kernel series. I am running 2.4.14 with Ext3 and Raid5 and am having problems with quotas and am wondering if I have something misconfigured or if this combination doesn't work yet. -- Daniel R. Bidwell | bidwell@andrews.edu Andrews University Information Technology Services If two always agree, one of

I have a 4 device volume with raid5 - trying to remove one of the devices (plenty of free space) and I get an almost immediate segfault. Scrub shows no errors, repair show space cache invalid but nothing else (I remounted with clear cache to be safe). Lots of corrupt on bdev (for 3 out of 4 drives), but I have no file access issues that I know of. Thanks! Output below:

Hiya, is there any recommendation out there to setup a btrfs FS on top of hardware or software raid5 or raid6 wrt stripe/stride alignment? From mkfs.btrfs, it doesn''t look like there''s much that can be adjusted that would help, and what I''m asking might not even make sense for btrfs but I thought I''d just ask. Thanks, Stephane -- To unsubscribe from this

Samba version 3.0.20 running on FreeBSD 5.4-Stable. Certain users on certain machines are losing access to my fileserver--one moment things are working and the next, they don't work. I can't figure out how to regain connectivity for those users on those workstations (running Win XP Pro). Please help! At about 08:15 on 3 Oct 2005 I was able to save a log file of the problem in action.

greetings, i just know i have read several times on this list and in other places that on a RAID5 array that the MBR should be placed on the /boot partition. is this truly correct and if so, why? my experiences of putting the MBR on the /boot partition are contrary to that it will even work and boot that way... comments please? regards, - rh -- Robert Hanson Abba Communications

Hi, for zfs raidz1, I know for random io, iops of a raidz1 vdev eqaul to one physical disk iops, since raidz1 is like raid5 , so is raid5 has same performance like raidz1? ie. random iops equal to one physical disk''s ipos. Regards Victor -- This message posted from opensolaris.org