[ale] SSD speeds

[Jim Kinney]

I think all the major have a package for it but it's not an install option
for any that I use.
ZFS is pretty bada$$ as long are you have a boatload of RAM and lots of
spindles. Putting it on a 1 or 2 drive system seems rather pointless.  But
I'm still expecting to have it mainstream Linux in a year or so. The
de-dupe would be useful for my work but it would require 512GB RAM for the
storage size.
On Jul 3, 2014 3:35 PM, "Lightner, Jeff" <JLightner at dsservices.com> wrote:

> Is ZFS available on something other Solaris/OpenSolaris?
>
>
>
> -----Original Message-----
> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
> Dustin Strickland
> Sent: Thursday, July 03, 2014 2:50 PM
> To: ale at ale.org
> Subject: Re: [ale] SSD speeds
>
> You could save a few pennies and still keep your transfer speed(most of
> the time) by using ZFS on HDDs and using a 20/40GB SSD as a cache.
> You might be able to set up other filesystems to use an SSD cache as well,
> but I'm not entirely sure.
>
> On Wed, 02 Jul 2014 12:21:40 -0400
> Chris Fowler <cfowler at outpostsentinel.com> wrote:
>
> > Yesterday I received two systems we ordered and installed CentOS 6.5
> > on them.  I am ignorant of SSD speeds and these systems have 2
> > 128gb/ea I'm running as RAID1 via mdtools. I'm amazed at the speed
> > compared to the SATA II/III drives I've been using.
> >
> > In the past we've used drives because we wanted space.  In this
> > project I would be happy with a 20GB SSD so space is not an issue.  I
> > decided to give it a try. I like them.
> >
> > Are write speeds slower that standard drives?  Is there any reason I
> > should not move forward with this model of using SSD in our systems vs
> > real drives?
> >
> > I do have rant about CentOS 6.5 text install.  I've googled it and I
> > understand why it is like this I just hate that I could do this in 5,
> > but not 6.
> >
> > I've installed many CentOS 5 systems around the world.  In some cases
> > I need to reinstall them.  I may be going to an older Fedora system
> > to CentOS.  Or I may have corruption.   I may even install new
> > hardware. What I do is create a serial bootable CD.  I then place a
> > device on the server's serial port, connect remotely to it, and have
> > the customer boot the CD.  I can now install in text mode remotely.
> > If I'm working on a system that has already been loaded I'll copy
> > vmlinuz and initrd.img to it, modify grub meny.lst and then boot that
> > entry.
> >
> > This works on CentOS 6 up until I get to partitioning disks.  You can
> > not do custom partitioning any more via text.  I had to install the
> > system in my lab last night via VNC.  This complicates these remote
> > installs because I have to figure out a way to gain remote IP access.
> > I think the only solution is to create a kickstart file.  On a new
> > system that the customer purchases I will need to know about the
> > drives before I can create the file to partition them.  Forcing a
> > graphical install just sucks and to me that is anti-server and
> > pro-desktop.
> >
> > Just my rant, ignore it. :)
> >
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