similar to: ZFS and SE99x0 Array Best Practices

Hello, Anyone using or tested Oracle (OLTP load) on NetApp? Connected via Fibre Channel not NFS. Performance is good or should we better stay with "classic" SAN storage like HP EVA or similar boxes from EMC or Hitachi? In EMC test papers NetApp does not look good. In NetApp papers - vice versa. :) So I'm somewhat confused. I remember someone in this list saying that

<http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide#RAID-Z_Configuration_Requirements_and_Recommendations> says that the number of disks in a RAIDZ should be (N+P) with N = {2,4,8} and P = {1,2}. But if you go down the page just a little further to the thumper configuration examples, none of the 3 examples follow this recommendation! I will have 10 disks to put into a

We''re starting to grow our ZFS environment and really need to start standardizing our monitoring procedures. OS tools are great for spot troubleshooting and sar can be used for some trending, but we''d really like to tie this into an SNMP based system that can generate graphs for us (via RRD or other). Whether or not we do this via our standard enterprise monitoring tool or

Now that Solaris 10 11/06 is available, I wanted to post the complete list of ZFS features and bug fixes that were included in that release. I''m also including the necessary patches for anyone wanting to get all the ZFS features and fixes via patches (NOTE: later patch revision may already be available): Solaris 10 Update 3 (11/06) Patches sparc Patches * 118833-36 SunOS 5.10:

I currently am getting good speeds out of my existing system (8x 2TB in a RAIDZ2 exported over fibre channel) but there''s no such thing as too much speed, and these other two drive bays are just begging for drives in them.... If I go to 10x 2TB in a RAIDZ3, will the extra spindles increase speed, or will the extra parity writes reduce speed, or will the two factors offset and leave things

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Hi there, i''m building a small NAS with 5x1TB Disks. The disks contains at the moment some data, ntfs as the fs and aren''t a raid. Now my im wondering if its possible to add the parity later. So that i add step by step one disk to the pool. And when i add the last disk, i enable the parity. (i have only one another 1 tb disk to backup the files) Thank you for you replies and

The stripe and stride options do two things: - shift block and inode bitmaps in each group to be on different disks - align the block allocation to the stripe and stride boundaries to avoid read-modify-write in RAID The first one is irrelevant if the flex_bg option is used, since it already packs the bitmaps together and achieves the same effect. The second is meaningless for RAID-1 since

Hello, I was wondering if someone could help me, I'm putting together a Server for personal use, I want to virtualize a few servers(mail, web, ssh) and use it as a NAS, but I have a question if I can use Multiple RAID Arrays using the following HW: Intel Xeon Quad Core X3430 ASUS P7F-M LGA 1156 - LSI MegaRAID(integrated) - HighPoint RocketRAID 2640x1 2 Hitachi 500GB HDDs 4 Hitachi 1TB HDDs

On Mon, May 28, 2018 at 02:05:05PM +0200, Kashyap Chamarthy wrote: > Cc the QEMU Block Layer mailing list (qemu-block@nongnu.org), [Sigh; now add the QEMU BLock Layer e-mail list to Cc, without typos.] > who might > have more insights here; and wrap long lines. > > On Mon, May 28, 2018 at 06:07:51PM +0800, Chunguang Li wrote: > > Hi, everyone. > > > > Recently

Had an idea, could someone please tell me why it''s wrong? (I feel like it has to be). A RaidZ-2 pool with one missing disk offers the same failure resilience as a healthy RaidZ1 pool (no data loss when one disk fails). I had initially wanted to do single parity raidz pool (5disk), but after a recent scare decided raidz2 was the way to go. With the help of a sparse file

Greetings, Quick question: I am about to acquire some disks for use with ZFS (currently using zfs-fuse v0.7.0). I''m aware of some 4k alignment issues with Western Digital advanced format disks. As far as I can tell, the Hitachi Deskstar 7K3000 (HDS723030ALA640) uses 512B sectors and so I presume does not suffer from such issues (because it doesn''t lie about the physical layout

Hi people, I am building a cheap remote rsync backup server using a software raid 5 array of 4 500GB disks. What I have available on the market is: 1. HITACHI GST Deskstar T7K500 500GB 7200rpm 16MB cache Serial ATA II-300 2. SEAGATE Barracuda 7200.10 with NCQ 500GB 7200rpm 16MB cache Serial ATA II-300 3. Western Digital 500GB SATAII RAID EDITION Caviar SE16 7200rpm 8.9ms 16MB cache I am

Cc the QEMU Block Layer mailing list (qemu-block@nongnu.org), who might have more insights here; and wrap long lines. On Mon, May 28, 2018 at 06:07:51PM +0800, Chunguang Li wrote: > Hi, everyone. > > Recently I am doing some tests on the VM storage+memory migration with > KVM/QEMU/libvirt. I use the following migrate command through virsh: > "virsh migrate --live

Hiya, Is there any reason (and anything to worry about) if disk target IDs don''t start at 0 (zero). For some reason mine are like this (3 controllers - 1 onboard and 2 PCIe); AVAILABLE DISK SELECTIONS: 0. c8t0d0 <ATA -ST9160314AS -SDM1 cyl 19454 alt 2 hd 255 sec 63> /pci at 0,0/pci10de,cb84 at 5/disk at 0,0 1. c8t1d0 <ATA -ST9160314AS -SDM1

I have a "data warehouse" application I''ve been writing and I would like to solicit some assistance with how to design it. Basically, I harvest data from a lot of sources and dump them into my database. For background on what I''m doing, this "data warehouse" takes HR/Personnel/Company/Organizational data and associates that with User Account and Group data

Hi, I created a RAID1 array of two physical HDD's with chunk size of 64KiB under Debian "wheezy" using mdadm. As a next step, I would like to create an ext3(or ext4) file-system to this RAID1 array using mke2fs utility. According to RAID-related tutorials, I should create the file-system like this: # mkfs.ext3 -v -L myarray -m 0.5 -b 4096 -E stride=16,stripe-width=32 /dev/md0

am trying to produce two dot plot figures in ggplot2. So far the first one (p) in the program below is working fine. However when I want to move to a faceted plot (p1) I seem to lose my ordering or, more likely, I'm just getting an ordering I am not expecting and I always have trouble understanding ordering in R! What I would like is the 2011 panel to be ordered in descending order as is

Note that stride and stripe width only make sense for RAI-5/6 arrays. For RAID-1 it doesn't really matter. Cheers, Andreas > On Mar 6, 2014, at 13:46, Martin T <m4rtntns@gmail.com> wrote: > > Hi, > > I created a RAID1 array of two physical HDD's with chunk size of 64KiB under Debian "wheezy" using mdadm. As a next step, I would like to create an ext3(or

hello! Can someone point me to some best practices in building high-available scalable mail system or! share your own success stories. I've read article in LJ "Building a Scalable High-Availability E-Mail System with Active Directory and More" but it seemed to be outdated and there's a single point of failure (Master node). What I want to achieve: high-available,