search for: raid60

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/

Hey folks, I have a Sun J4400 SAS1 disk array with 24 x 1T drives in it connected to a Sunfire x2250 running 5.8 ( 64 bit ) I used 'arcconf' to create a big RAID60 out of (see below). But then I mount it and it is way too small This should be about 20TB : [root at solexa1 StorMan]# df -h /dev/sdb1 Filesystem Size Used Avail Use% Mounted on /dev/sdb1 186G 60M 176G 1% /mnt/J4400-1 Here is how I created it : ./arcconf create 1 l...

...f it is not what I expect, it will be long investigation why before I do something. Luckily never happened that way. Still, as you do, I prefer RAID-6, because even improbable can happen. Even if RAID10 can give you more speed (which with controller cache is questionable) I prefer reliability (yes, RAID60 is there too, but too wasteful for simple things we do). Valeri > > This is one reason I prefer RAID6 over RAID5: if you have one failed > drive in your array, and you pull the wrong one, your RAID5 is now gone, > but your RAID6 is still functional. The odds are with you in a RAID10...

OK folks, I'm back at it again. Instead of taking my J4400 ( 24 x 1T disks) and making a big RAID60 out of it which Linux cannot make a filesystem on, I'm created 4 x RAID6 which each are 3.64T I then do : sfdisk /dev/sd{b,c,d,e} <<EOF ,,8e EOF to make a big LVM partition on each one. But then when I do : pvcreate /dev/sd{b,c,d,e}1 and then pvdisplay It shows each one as only ha...

Does anyone know what program can be used to query the RAID status from the OS for an on-board LSI SAS 2308-4i? On this page: http://docs.avagotech.com/docs/12351997 there is a curious note on the left that reads: "Integrated MegaRAID support available upon request" After one mostly fruitless round of chatting with LSI/Avago/Broadcom and one completely fruitless round of chatting

...n scripts to make it easier to use on a LSI MegaRAID 9261-8i (which doesn't /have/ any IT mode) # lsi-raidinfo -- Controllers -- -- ID | Model c0 | LSI MegaRAID SAS 9261-8i -- Volumes -- -- ID | Type | Size | Status | InProgress volume c0u0 | RAID10 1x2 | 2727G | Optimal | None volume c0u1 | RAID60 1x8 | 16370G | Optimal | None volume c0u2 | RAID60 1x8 | 16370G | Optimal | None -- Disks -- -- Encl:Slot | vol-span-unit | Model | Status disk 8:0 | 0-0-0 | Z291VTS5ST33000650NS 0003 | Online, Spun Up disk 8:1 | 0-0-1 | Z291VTRPST33000650NS 0003 | Online, Spun Up disk 8:2 | 1-0-0 | Z291VTKWST3300...

...cling. The /var/log/messages after a lockup last night is appended to this message. hardware is a pretty typical server, Supermicro X8DTE-F motherboard, dual Xeon X5650, 48GB ECC memory, LSI SAS 2008 for the boot disks, and LSI MegaRAID SAS 9261-8i for the data volume. Lots of 3TB disks in a raid60. Primary application is BackupPC v3.3.0 (from EPEL), it also has an NFS export (also used for backup purposes). Runs CentOS 6.latest (kernel 2.6.32-431.11.2.el6.x86_64). X is not loaded (inittab level 3). selinux is permissive, iptables is not loaded. this server is on a corporate int...

On Thursday 02 November 2017 14:10:25 Bowie Bailey wrote: > If you want raid 5 or 6, then you should get a hardware controller. For > raid 1, mdadm should work just fine.? I would suggest trying it before > buying a raid controller.? If it works for you, you save a few hundred > dollars and you have one less piece of hardware to worry about. > > I haven't looked at them in

...ke 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 problem toda...

I just had an IBM in a remote location with a hardware raid1 have both drives go bad. With local machines I probably would have caught it from the drive light before the 2nd one died... What is the state of the art in linux software monitoring for this? Long ago when that box was set up I think the best I could have done was a Java GUI tool that IBM had for their servers - and that seemed like

...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 but does...

I'm setting up this huge RAID 6 box. I've always thought of hot spares, but I'm reading things that are comparing RAID 5 with a hot spare to RAID 6, implying that the latter doesn't need one. I *certainly* have enough drives to spare in this RAID box: 42 of 'em, so two questions: should I assign one or more hot spares, and, if so, how many? mark

...et). 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 BTRFS_BLOC...

...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------ --Sequential Input- --Ran...

On Fri, January 20, 2017 5:16 pm, Joseph L. Casale wrote: >> This is why before configuring and installing everything you may want to >> attach drives one at a time, and upon boot take a note which physical >> drive number the controller has for that drive, and definitely label it >> so >> y9ou will know which drive to pull when drive failure is reported. > >

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

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