Displaying 20 results from an estimated 10000 matches similar to: "zfs/raid configuration question for an application"
2007 Aug 21
12
Is ZFS efficient for large collections of small files?
Is ZFS efficient at handling huge populations of tiny-to-small files -
for example, 20 million TIFF images in a collection, each between 5
and 500k in size?
I am asking because I could have sworn that I read somewhere that it
isn''t, but I can''t find the reference.
Thanks,
Brian
--
- Brian Gupta
http://opensolaris.org/os/project/nycosug/
2006 Apr 28
4
ZFS RAID-Z for Two-Disk Workstation Setup?
After reading the ZFS docs it does appear that RAID-Z can be used on a two-disk system and I was wondering if the system would [i]basically [/i]work as Intel''s Matrix RAID for two disks?
[u] Intel Matrix RAID info:[/u]
http://www.intel.com/design/chipsets/matrixstorage_sb.htm
http://techreport.com/reviews/2005q1/matrix-raid/index.x?pg=1
My focus with this thread is some
2006 Sep 17
2
ZFS layout on hardware RAID-5?
Greetings,
I followed closely the thread "ZFS and Storage", and other discussions
about using ZFS on hardware RAID arrays, since we are deploying ZFS in
a similar situation here. I''m sure I''m oversimplifying, but the consensus
for general filesystem-type storage needs, as I''ve read it, tends toward
doing ZFS RAID-Z (or RAID-Z2) on LUNS consisting of hardware
2008 Jun 22
6
ZFS-Performance: Raid-Z vs. Raid5/6 vs. mirrored
Hi list,
as this matter pops up every now and then in posts on this list I just
want to clarify that the real performance of RaidZ (in its current
implementation) is NOT anything that follows from raidz-style data
efficient redundancy or the copy-on-write design used in ZFS.
In a M-Way mirrored setup of N disks you get the write performance of
the worst disk and a read performance that is
2011 Nov 08
6
Couple of questions about ZFS on laptops
Hello all,
I am thinking about a new laptop. I see that there are
a number of higher-performance models (incidenatlly, they
are also marketed as "gamer" ones) which offer two SATA
2.5" bays and an SD flash card slot. Vendors usually
position the two-HDD bay part as either "get lots of
capacity with RAID0 over two HDDs, or get some capacity
and some performance by mixing one
2008 Jun 17
6
mirroring zfs slice
Hi All,
I had a slice with zfs file system which I want to mirror, I
followed the procedure mentioned in the amin guide I am getting this
error. Can you tell me what I did wrong?
root # zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
export 254G 230K 254G 0% ONLINE -
root # echo |format
Searching for disks...done
2010 Oct 02
1
Memory allocation in 64 bit R
Hi Everyone,
I am getting the following error message
Error: cannot allocate vector of size 2.6 Gb
In addition: Warning messages:
1: In dim(res$res) = dim(bi) :
Reached total allocation of 8122Mb: see help(memory.size)
2: In dim(res$res) = dim(bi) :
Reached total allocation of 8122Mb: see help(memory.size)
3: In dim(res$res) = dim(bi) :
Reached total allocation of 8122Mb: see
2007 May 31
3
zfs boot error recovery
hi all,
i would like to ask some questions regarding best practices for zfs
recovery if disk errors occur.
currently i have zfs boot (nv62) and the following setup:
2 si3224 controllers (each 4 sata disks)
8 sata disks, same size, same type
i have two pools:
a) rootpool
b) datapool
the rootpool is a mirrored pool, where every disk has a slice (the s0,
which is 5 % of the whole disk) and this
2010 Feb 12
13
SSD and ZFS
Hi all,
just after sending a message to sunmanagers I realized that my question
should rather have gone here. So sunmanagers please excus ethe double
post:
I have inherited a X4140 (8 SAS slots) and have just setup the system
with Solaris 10 09. I first setup the system on a mirrored pool over
the first two disks
pool: rpool
state: ONLINE
scrub: none requested
config:
NAME
2008 Jul 09
8
Using zfs boot with MPxIO on T2000
Here is what I have configured:
T2000 with OBP 4.28.6 2008/05/23 12:07 with 2 - 72 GB disks as the root disks
OpenSolaris Nevada Build 91
Solaris Express Community Edition snv_91 SPARC
Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
Use is subject to license terms.
Assembled 03 June 2008
2008 Dec 19
4
ZFS boot and data on same disk - is this supported?
I have read the ZFS best practice guide located at
http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide
However I have questions whether we support using slices for data on the
same disk as we use for ZFS boot. What issues does this create if we
have a disk failure in a mirrored environment? Does anyone have examples
of customers doing this in production environments.
I
2018 Jun 22
3
loop con matriz que cambia de nombre
Buenos días. Quiero hacer un for (j), anidado en otro for (i). En el
2º for, en cada iteración ha de crear una matriz vacía: mat <-
matrix(nrow=nrow(data),ncol=19) pero llamándola de forma distinta cada
vez. El nombre ha de ser: paste("D",i,colnames(Data[j]),sep=""). Llevo
un rato haciendo pruebas pero no me sale. A ver si alguien pudiera
ayudarme,
gracias,
Manuel
2008 Jun 30
20
Some basic questions about getting the best performance for database usage
I''m new so opensolaris and very new to ZFS. In the past we have always used linux for our database backends.
So now we are looking for a new database server to give us a big performance boost, and also the possibility for scalability.
Our current database consists mainly of a huge table containing about 230 million records and a few (relatively) smaller tables (something like 13 million
2017 Jan 09
3
Leer csv separado por comas y por espacios
Buenas compañeros!
Tengo una duda y no se muy bine como resolverlo. Tengo un csv en el que hay variables separadas por comas y otras esparadas por espacios (tabulaciones). Algo así
V1 V2 V3,V4
M1 123 2512,2522
M2 117 2852,3521
...................................
Para leerlo he probado poniendo:
2006 Jan 04
8
Using same ZFS under different kernel versions
I build two zfs filesystems using b29 (from brandz).
I then re-installed solaris express b28, preserving the zfs filesystems.
When I tried to "zpool import" my zfs filesystems I got a kernel panic:
> debugging crash dump vmcore.0 (32-bit) from blackbird
> operating system: 5.11 snv_28 (i86pc)
> panic message:
> ZFS: bad checksum (read on /dev/dsk/c1d0p0 off 24d5e000: zio
2008 Oct 14
4
Change the volblocksize of a ZFS volume
Dear all,
Background:
I have a ZFS volume with the incorrect volume blocksize for the filesystem (NTFS) that it is supporting.
This volume contains important data that is proving impossible to copy using Windows XP Xen HVM that "owns" the data.
The disparity in volume blocksize (current set to 512bytes!!) is causing significant performance problems.
Question :
Is there a way to
2006 May 19
3
Oracle on ZFS vs. UFS
Hi,
I''m preparing a personal TPC-H benchmark. The goal is not to measure or
optimize the database performance, but to compare ZFS to UFS in similar
configurations.
At the moment I''m preparing the tests at home. The test setup is as
follows:
. Solaris snv_37
. 2 x AMD Opteron 252
. 4 GB RAM
. 2 x 80 GB ST380817AS
. Oracle 10gR2 (small SGA (320m))
The disks also contain the OS
2019 Apr 02
4
Orientación para hacer un sitio web con R
Buenas;
La pregunta va resultar evidente una vez se entienda, espero saber darme a
entender.
Quiero identificar qué tengo que aprender para poder hacer un sitio web con
R. Este sitio web tiene que poder:
* Recibir los datos (archivos .csv mutuamente referenciados) que alguien
conectado a la red (vos mismo, usted misma) suba.
* Procesarlos
* Devolver resultados en base a esos datos introducidos.
2005 Dec 14
2
format(1M) quits if there are pools on disks and no zfs module
Hi.
While submitting SDR-0149 on ZFS bug I encountered problem with
format utility. This is v240 with snv_29 with internal disks. On s0 slices
there is zfs pool (which is not imported). I did unload zfs modules then
moved zfs driver and run format. Now format quits just because there''s no
zfs module (and not even one zfs pool is imported). It shouldn''t behave
that
2010 Apr 24
3
ZFS RAID-Z2 degraded vs RAID-Z1
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