Displaying 20 results from an estimated 9000 matches similar to: "SSD drives are really fast running Dovecot"
2010 Dec 23
2
Maildir feature I'd like to see - SSD for newer messages
SSD drives are very fast but expensive. So I have a crude idea that I'd
like to see. May not be practical but would like to get some thoughts on it.
Some new SSDs use SATA 3 (6gb/sec) with 355/mb/sec read speeds and
215MB/sec write. Put these in raid 0 and it screams! Can you imagine how
fast that would be?
What would be nice is if new email were on faster drives with old email
being
2016 Jan 07
2
CentOS 6, SSD recommendations?
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
2011 Sep 07
7
new ssd to play with
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
2012 Nov 13
9
Intel DC S3700
[This email is either empty or too large to be displayed at this time]
2011 Aug 11
19
Intel 320 as ZIL?
Are any of you using the Intel 320 as ZIL? It''s MLC based, but I
understand its wear and performance characteristics can be bumped up
significantly by increasing the overprovisioning to 20% (dropping
usable capacity to 80%).
Anyone have experience with this?
Ray
2016 Oct 28
2
Re: Disk near failure
On Fri, 28 Oct 2016 18:50, Alessandro Baggi wrote:
> Il 28/10/2016 16:28, Valeri Galtsev ha scritto:
>> On Fri, October 28, 2016 2:42 am, Alessandro Baggi wrote:
>> > Il 27/10/2016 19:38, Yamaban ha scritto:
>> > > For my personal use I would replace that Drive asap.
>> > > - There is no warranty for it anymore (time since buy)
>> > > -
2016 Jan 05
4
SSD drives for the OS - 1 or 2?
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
2010 Jun 19
6
does sharing an SSD as slog and l2arc reduces its life span?
Hi,
I don''t know if it''s already been discussed here, but while
thinking about using the OCZ Vertex 2 Pro SSD (which according
to spec page has supercaps built in) as a shared slog and L2ARC
device it stroke me that this might not be a such a good idea.
Because this SSD is MLC based, write cycles are an issue here,
though I can''t find any number in their spec.
Why do I
2012 May 17
6
SSD format/mount parameters questions
For using SSDs:
Are there any format/mount parameters that should be set for using btrfs
on SSDs (other than the "ssd" mount option)?
General questions:
How long is the ''delay'' for the delayed alloc?
Are file allocations aligned to 4kiB boundaries, or larger?
What byte value is used to pad unused space?
(Aside: For some, the erased state reads all 0x00, and for
2010 Aug 19
3
SSD caching of MDT
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
2010 Jun 25
13
OCZ Vertex 2 Pro performance numbers
Now the test for the Vertex 2 Pro. This was fun.
For more explanation please see the thread "Crucial RealSSD C300 and cache
flush?"
This time I made sure the device is attached via 3GBit SATA. This is also
only a short test. I''ll retest after some weeks of usage.
cache enabled, 32 buffers, 64k blocks
linear write, random data: 96 MB/s
linear read, random data: 206 MB/s
linear
2012 Feb 02
3
SSD Drives
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
2009 Feb 13
3
Bonnie++ run with RAID-1 on a single SSD (2.6.29-rc4-224-g4b6136c)
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--
2020 Mar 24
2
Building a NFS server with a mix of HDD and SSD (for caching)
Hi list,
I'm building a NFS server on top of CentOS 8.
It has 8 x 8 TB HDDs and 2 x 500GB SSDs.
The spinning drives are in a RAID-6 array. They are 4K sector size.
The SSDs are in RAID-1 array and with a 512bytes sector size.
I want to use the SSDs as a cache using dm-cache. So here what I've done
so far:
/dev/sdb ==> SSD raid1 array
/dev/sdd ==> spinning raid6 array
I've
2017 Aug 09
3
Errors on an SSD drive
To be honest, I'd not try a btrfs volume on a notebook SSD. I did that on a
couple of systems and it corrupted pretty quickly. I'd stick with xfs/ext4
if you manage to get the drive working again.
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2008 Sep 10
7
Intel M-series SSD
Interesting flash technology overview and SSD review here:
http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3403
and another review here:
http://www.tomshardware.com/reviews/Intel-x25-m-SSD,2012.html
Regards,
--
Al Hopper Logical Approach Inc,Plano,TX al at logical-approach.com
Voice: 972.379.2133 Timezone: US CDT
OpenSolaris Governing Board (OGB) Member - Apr 2005
2013 Aug 19
1
LVM RAID0 and SSD discards/TRIM
I'm trying to work out the kinks of a proprietary, old, and clunky
application that runs on CentOS. One of its main problems is that it
writes image sequences extremely non-linearly and in several passes,
using many CPUs, so the sequences get very fragmented.
The obvious solution to this seems to be to use SSDs for its output, and
some scripts that will pick up and copy our the sequences
2017 Aug 09
7
Errors on an SSD drive
I am building a new system using an Kingston 240GB SSD drive I pulled
from my notebook (when I had to upgrade to a 500GB SSD drive). Centos
install went fine and ran for a couple days then got errors on the
console. Here is an example:
[168176.995064] sd 0:0:0:0: [sda] tag#14 FAILED Result:
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
[168177.004050] sd 0:0:0:0: [sda] tag#14 CDB: Read(10)
2010 Oct 19
7
SSD partitioned into multiple L2ARC read cache
What would the performance impact be of splitting up a 64 GB SSD into four
partitions of 16 GB each versus having the entire SSD dedicated to each
pool?
Scenario A:
2 TB Mirror w/ 16 GB read cache partition
2 TB Mirror w/ 16 GB read cache partition
2 TB Mirror w/ 16 GB read cache partition
2 TB Mirror w/ 16 GB read cache partition
versus
Scenario B:
2 TB Mirror w/ 64 GB read cache SSD
2 TB
2015 Nov 18
1
Intel SSD
On 18/11/2015 16:37, Eero Volotinen wrote:
> What is Intel SSD Data Center Tool (ISDCT) ?
" This tool provides a command line interface for interacting with and
issuning commands to Intel SSD Data Center devices. It is intended to
configure and check the state of Intel PCIe SSDs and SATA SSDs for a
production environment. "
> Does Linux kernel detect disk on sata ports?
>