similar to: SSD over 10gbe not any faster than 10K SAS over GigE

Replacing my current media server with another larger capacity media server. Also switching over to solaris/zfs. Anyhow we have 24 drive capacity. These are for large sequential access (large media files) used by no more than 3 or 5 users at a time. I''m inquiring as to what the best configuration for this is for vdevs. I''m considering the following configurations 4 x x6

Hi folks, For people who might be interested, here is how btrfs performs with two partitions on a single SSD drive in a RAID-1 mirror. This is on a Dell E4200 with Core 2 Duo U9300 (1.2GHz), 2GB RAM and a Samsung SSD (128GB Thin uSATA SSD). Version 1.03c ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block--

I grabbed a new SSD M4-CT064M4SSD2 from Crucial. I am disappointed. I stuck the unit in an Atom machine (zotac) with CentOS 6 on the disk. It really doesn't "feel" faster than the previous 5400 RPM drive that was in it. The SSD is giving me (in the zotac running centos 6): hdparm -t /dev/sda /dev/sda: Timing buffered disk reads: 298 MB in 3.00 seconds = 99.30 MB/sec The

Hello, I am setting up a new (remote) server. I initially installed 9.2 RC4 amd64 because that's what the data center put in the drive for me. Shortly thereafter I downloaded 9.2-STABLE sources and compiled world and a generic kernel. While doing so the system became unreachable by SSH The SSH sessions appeared to connect but there was never any data returned. I could telnet to port 22

Hi, Out of pure curiosity, I was wondering, what would happen if one tries to use a regular 7200RPM (or 10K) drive as slog or L2ARC (or both)? I know these are designed with SSDs in mind, and I know it''s possible to use anything you want as cache. So would ZFS benefit from it? Would it be the same? Would it slow down? I guess it would slow things down, because it would be trying to

I''m planning on setting up an NFS server for our ESXi hosts and plan on using a virtualized Solaris or Nexenta host to serve ZFS over NFS. The storage I have available is provided by Equallogic boxes over 10Gbe iSCSI. I am trying to figure out the best way to provide both performance and resiliency given the Equallogic provides the redundancy. Since I am hoping to provide a 2TB

Hello, because of high disk load we plan to move from disk (raid1) to ssd. Are there recommendations for - manufacturer - file sytem - raid1 The Red Hat Storage Administration Guide says: - no raid 1 - ext4 only is this state of the art? I have searched list,centos.org 2015 - nothing found. I found in the year 2012 / 2013: https://www.centos.org/forums/viewtopic.php?t=7580

On 08/09/2017 10:46 AM, Chris Murphy wrote: > If it's a bad sector problem, you'd write to sector 17066160 and see if the > drive complies or spits back a write error. It looks like a bad sector in > that the same LBA is reported each time but I've only ever seen this with > both a read error and a UNC error. So I'm not sure it's a bad sector. > > What is

Hi all! I''ve decided to take the "big jump" and build a ZFS home filer (although it might also do "other work" like caching DNS, mail, usenet, bittorent and so forth). YAY! I wonder if anyone can shed some light on how long a pool scrub would take on a fairly decent rig. These are the specs as-ordered: Asus P5Q-EM mainboard Core2 Quad 2.83 GHZ 8GB DDR2/80 OS: 2 x

Has anyone actually used a SSD in a Centos setup? My little experiment with a s/h WD drive for /tmp and SWAP partitions kicked the bucket on Wednesday, when the poor WD drive caught the click-of-death. It was a s/h drive to start with and lasted about 4 months. But that was without the /var/log/ partition being written to it, as I mounted that back onto /var/log from the original drive. So

I'm considering setting up my own mailserver with Dovecot 2.0 (as soon as it's out) and SSD. I'm debating whether it's worth it or not. I have been running a mailserver with the Dovecot 1.1 train for a couple of years and it's been flawless and amazing. I'm thinking about using either FreeBSD 8.1 w/ZFS or OpenBSD 4.8-beta on a 64 GB or 80 GB SSD (Corsair or Intel) using

Has anyone installed a high I/O application such as an email server on SSD drives? Was thinking about doing two SSD's in RAID1. It would solve my I/O latency issues but I have heard that SSD's wear out quickly in high I/O situations? Something like each memory location only has X many writes before its done. Just wandering if anyone has tested it and if newer SSD's are better about

I just ordered a new machine that's destined to become a Centos 6 application server for a publishing company, and decided to get one with a 40GB SSD as well as a standard hard drive. I'm thinking that I can put most of the operating system on that drive and have the home directories and whatnot on the regular hard drive. Are there any pitfalls lying in wait for an unwary person like me

Hi, I am thinking to change sata disk for /home and I want to know if change to a SSD hd, is a good option. I have 30-40 accounts with 30-50K email in boxes. -- Saludos!! Luciano Andino GNU/Linux user #185103 Santa Fe - Argentina -----------------------------------------------

Preparing to build a small replacement server (initially built in 2005) and normally for the OS I would buy 2x500GB drives and deploy in a RAID 1 configuration. Now we have SSD drives available - does just a single SSD drive offer the same reliability or is there advantage in deploying two in a Raid 1 config? Also, what form factor / interface is best for the SSD OS boot device on a server

I have an Intel X25-M 80GB SSD. For optimum performance, I need to block align the SSD device, but I am not sure exactly how I should to it. If I run the format -> fdisk it allows me to partition based on a cylinder, but I don''t think that is sufficient enough. Can someone tell me how they block aligned an SSD device for use in l2arc. Thanks, Geoff

I just downloaded and installed R 1.6.1 on my Windows machine where I also run SAS. I want to use the 'read.ssd' function so that I can convert a permanent SAS data set into an R data frame. I downloaded and installed the package 'foreign' on my machine, which includes the 'read.ssd' function. I read the instructions, and followed the example closely in the R

I mentioned here the other day that I was planning to set up a Centos 6 system using a SSD for the system drive and a regular hard drive for a data drive. My plan is to have everything that doesn't change (much) on the SSD, such as /boot, /lib, /bin and so on. I want to put /tmp and /var and /home on the regular hard drive. Now that I'm at the stage of actually setting this up I have

Article by Jeff Layton: http://www.linux-mag.com/id/7839 anyone have views on whether this sort of caching would be useful for the MDT? My feeling is that MDT reads are probably pretty random but writes might benefit...? GREG -- Greg Matthews 01235 778658 Senior Computer Systems Administrator Diamond Light Source, Oxfordshire, UK

Anyone have any clues about how to sanitize a dead SSD? We haven't had it yet, but we're sure it's coming. Esp. since I'm a federal contractor, a dead disk gets deGaussed, but what the hell do you do with a SSD?