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Search results for Software RAID and Encrypted Filesystem Benchmarks

OpenSUSE

rsnapshot - Local/Remote Filesystem backups utility in openSUSE

Post date: October 6, 2008, 21:10 Category: System Views: 3870 Comments
Tutorial quote: rsnapshot is a filesystem backup utility based on rsync. Using rsnapshot, it is possible to take snapshots of your filesystems at different points in time. Using hard links, rsnapshot creates the illusion of multiple full backups, while only taking up the space of one full backup plus differences. When coupled with ssh, it is possible to take snapshots of remote filesystems as well.
NetBSD

How to use encrypted swap over nfs

Post date: June 22, 2006, 21:06 Category: Security Views: 5647 Comments
Tutorial quote: It's getting more and more popular to use encrypted swap. This is however not a trivial task with nfs-swap.
Mandriva

Distributed Replicated Storage Across 4 Nodes With GlusterFS On Mandriva 2010.0

Post date: April 20, 2010, 12:04 Category: Installing Views: 3921 Comments
Tutorial quote: This tutorial shows how to combine four single storage servers (running Mandriva 2010.0) to a distributed replicated storage with GlusterFS. Nodes 1 and 2 (replication1) as well as 3 and 4 (replication2) will mirror each other, and replication1 and replication2 will be combined to one larger storage server (distribution). Basically, this is RAID10 over network. If you lose one server from replication1 and one from replication2, the distributed volume continues to work. The client system (Mandriva 2010.0 as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86_64 servers with SATA-II RAID and Infiniband HBA.
Debian

Distributed Replicated Storage Across Four Nodes With GlusterFS On Debian Lenny

Post date: June 30, 2009, 11:06 Category: Installing Views: 3709 Comments
Tutorial quote: This tutorial shows how to combine four single storage servers (running Debian Lenny) to a distributed replicated storage with GlusterFS. Nodes 1 and 2 (replication1) as well as 3 and 4 (replication2) will mirror each other, and replication1 and replication2 will be combined to one larger storage server (distribution). Basically, this is RAID10 over network. If you lose one server from replication1 and one from replication2, the distributed volume continues to work. The client system (Debian Lenny as well) will be able to access the storage as if it was a local filesystem. GlusterFS is a clustered file-system capable of scaling to several peta-bytes. It aggregates various storage bricks over Infiniband RDMA or TCP/IP interconnect into one large parallel network file system. Storage bricks can be made of any commodity hardware such as x86-64 servers with SATA-II RAID and Infiniband HBA.
Linux

Howto install the base Linux system onto a USB thumbdrive with the root partition encrypted

Post date: April 20, 2006, 12:04 Category: System Views: 2832 Comments
Tutorial quote: This howto will explain how to install a very basesystem onto a USB thumbdrive with the root partition encrypted. It includes support for cryptsetup-luks, and udev.
Debian

Creating A Fully Encrypted Para-Virtualised Xen Guest System Using Debian Lenny

Post date: May 3, 2009, 10:05 Category: Miscellaneous Views: 3432 Comments
Tutorial quote: This document explains how to set up a fully encrypted para-virtualized XEN instance. In this howto, the host system is running Debian Etch, while the guest system to be installed will be using Debian Lenny. If you are concerned about your privacy, you might want to consider using hard disk encryption to protect your valuable private data from spying eyes. Usually, the easiest way would be to use your distribution's installer to set up a fully encrypted system; I think most recent Linux distributions support this. However, when you are using XEN to provide virtualization, there are situations where you might not want to encrypt your whole computer with all guest instances, but instead only encrypt one OS instance. This howto will deal with exactly this situation. It assumes that the XEN host system is already up and running.
Unix+clones

X Window Manager Benchmarks (E17 on Top)

Post date: June 9, 2005, 14:06 Category: Benchmarks Views: 3811 Comments
Tutorial quote: I've been focusing on some stability issues of late in E17, but more importantly - speed. I've been doing a little profiling and shaving off cycles where I can find readily optimizable code. I have E17 starting in 0.52 seconds (from execute to usable desktop). Considering that involves loading and rendering and scaling a complex multi-leayered desktop background, loading multiple useful modules (pager, ibar, start, dropshadow, cpufreq handler, clock, etc.), then that's not too bad.

Now I'm a numbers man. I like numbers. I don't like vague "it's faster than X" or "that's slower than this" statements without numbers to back it up. I also like to play fair. Also given there are no "performance suites" i know of that measure window manager performance, I wrote a quick and dirty one.
Linux

Creating a safe directory with PAM and Encfs

Post date: June 7, 2006, 20:06 Category: Security Views: 3204 Comments
Tutorial quote: Now, in my network (and others) the credentials provided at login could (and should) be used by those programs. How can you retrieve these credentials, providing enough security?
With a the PAM modules pam_script it's possible to store the password in a file, which will be used by fusemb and mount.cifs to read the password from.

To achieve security, one could make the user logging in owner and deny read/write for anybody else. Remove this file when the user ends his/her session.
This is enough, for runtime. But I was wondering, but what if the system crashes, and the file with the credentials remains on the harddrive? Anybody who is able to mount this harddrive with for example a lifecd, can read this file!

That's why I was looking for a way to encrypt this file.

With encfs this is very possible! At run time it gives an interface to encrypted files and directories, which does only exist at runtime! When the system is not running, there are only encrypted files, useless when you do not know the key to it. And this key is exactly the (encrypted) password! That's why I've chosen for a combination of PAM and Encfs.
Unix+clones

Encrypted NFS with OpenSSH

Post date: May 21, 2005, 19:05 Category: Network Views: 2853 Comments
Tutorial quote: NFS is a widely deployed, mature, and understood protocol that allows computers to share files over a network. The main problems with NFS are that it relies on the inherently insecure UDP protocol, transactions are not encrypted, hosts and users cannot be easily authenticated, and its difficulty in firewalling. This article provides a solution to most of these problems for Linux clients and servers. These principles may also be applied to any UNIX server with ssh installed. This article assumes basic knowledge of NFS and firewalling for Linux.
Debian

Creating Encrypted FTP Backups With duplicity And ftplicity On Debian Etch

Post date: December 18, 2007, 12:12 Category: Miscellaneous Views: 3365 Comments
Tutorial quote: When you rent a dedicated server nowadays, almost all providers give you FTP backup space for your server on one of the provider's backup systems. This tutorial shows how you can use duplicity and ftplicity to create encrypted (so that nobody with access to the backup server can read sensitive data in your backups) backups on the provider's remote backup server over FTP. ftplicity is a duplicity wrapper script (provided by the German computer magazine c't) that allows us to use duplicity without interaction (i.e., you do not have to type in any passwords).
Web-based applications and online marketing solutions - LumoLink