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== Configuration ==

As of 2014/03/04

[[File:Michimain_harddisks_20140304.png]]

* Disk 0 is a IDE-HDD
* Disk 1 is a IDE-HDD (purpose is just to start Windows 2008 R2 on Disk 2, which doesn't start from there suddenly for some unknown reason)
* Disk 2 is a SATA-HDD
* Disk 3 is a SATA-SSD with a GPT
** Interesting fact: I wasn't able to install Windows 2008 R2 there. Setup said that my computer wouldn't start Windows if I would install it to a GPT disk because it has BIOS instead of EFI. However, this is complete nonsense, as my computer ''does'' start Ubuntu from that disk. It is true that the BIOS in my PC really could have problems booting directly off that disk (haven't tried it yet - actually there ''is'' a trick that enables BIOS computers to boot off GPT disks), but I have GRUB 2 installed on Disk 0 and GRUB has no problems with that. I think it's just bullheaded from Microsoft. At least they could have made an option "install at own risk".

=== HDD ===

==== Performance measurements in Windows 2008 R2 ====

[[File:H2testw michimain c.jpg]]
[[File:H2testw michimain d.jpg]]
[[File:H2testw michimain j.jpg]]

==== Performance measurements in Xubuntu 12.04 ====

New hard disk (Seagate ST1000VX000) - ext4 partition using GPT partition scheme

* Write

<pre>
# dd if=/dev/zero of=outfile bs=1048576 count=4096
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 20.903 s, 205 MB/s
</pre>

* Flush cashes & read

<pre>
# dd if=outfile of=/dev/null bs=1048576 count=4096
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 21.4553 s, 200 MB/s
</pre>

* Read using cache

<pre>
# dd if=outfile of=/dev/null bs=1048576 count=4096
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 3.45813 s, 1.2 GB/s
</pre>

=== SSD ===

[http://geizhals.at/ocz-vertex-2-60gb-oczssd2-2vtxe60g-a534348.html OCZ Vertex 2 60GB, 2.5", SATA 3Gb/s (OCZSSD2-2VTXE60G) ]

==== Performance on partition #2 in Windows 2008 R2 ====

[[File:H2testw_michimain_testpartssd.png]]

* Writing speed: 54.7 MByte/s
* Reading speed: 108 MByte/s

==== Performance on partition #2 in Ubuntu 12.04.3 ====

# mount | grep testpartssd
/dev/sdb2 on /media/testpartssd type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)

* Write

# dd if=/dev/zero of=tempfile bs=1M count=4096 conv=fdatasync,notrunc
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 114.712 s, 37.4 MB/s

* Read

# echo 3 | tee /proc/sys/vm/drop_caches
# dd if=tempfile of=/dev/null bs=1M count=4096
4096+0 records in
4096+0 records out
4294967296 bytes (4.3 GB) copied, 18.9615 s, 227 MB/s

==== Performance on partition #5 ====

/dev/sdb5 on /media/data type ext3 (rw,nosuid,nodev,uhelper=udisks)

* Write

# dd if=/dev/zero of=tempfile bs=1M count=4096 conv=fdatasync,notrunc
4096+0 Datensätze ein
4096+0 Datensätze aus
4294967296 Bytes (4,3 GB) kopiert, 19,373 s, 222 MB/s

* Read

# echo 3 | tee /proc/sys/vm/drop_caches
# dd if=tempfile of=/dev/null bs=1M count=4096
4096+0 Datensätze ein
4096+0 Datensätze aus
4294967296 Bytes (4,3 GB) kopiert, 19,5825 s, 219 MB/s

[http://wiki.ubuntuusers.de/Festplatten-Geschwindigkeitstest Credits (performance measurements in Linux)]

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