Encrypted 2-drive mirrored RAID setup

[technosf]

I would like to use a couple of the 2T slow green drives in a mirror, but need recommendation on and enclosure and connection. This would be for a solid encrypted 2-drive mirrored RAID setup I can use with my Pogo V2, or GoFlex etc.

Configuration questions that have crossed my mind are:
* NAS, or connected to the plug server (via USB)
* RAID on the enclose or soft RAID via the server
* AES encryption
* Disk services running (samba, Torrent etc)
* Low power (preferably with the option to power down the drives on a schedule/timeout)
* Best plug to use, if needed.


Has anyone gone through this exercise and have any lessons learned or recommendations?

TIA

[WarheadsSE]

Unless the disks are in the same enclosure, don't do soft raid across USB

[fovea1959]

$this->bbcode_second_pass_quote('', 'U')nless the disks are in the same enclosure, don't do soft raid across USB

[mastashake57]

WarheadSE, going with your reply, would this enclosure work?

http://www.newegg.com/Product/Product.a ... -_-NA-_-NA

I want to RAID1 a couple of drives I have laying around and this drive provides a RAID enclosure with USB accessibility. Would this work?

[WarheadsSE]

It looks like that should work. It has the benefit of handling the RAID'ing for you.

[mastashake57]

$this->bbcode_second_pass_quote('WarheadsSE', 'I')t looks like that should work. It has the benefit of handling the RAID'ing for you.

[sambul13]

Interesting...pls give more details. I'm curious, what you're using the RAID for and how often? Is the enclosure or drives in it getting hot over time?

What Pogoplug model do you use with it? What file system the drives are formatted to? Can you measure read & write speed to the RAID - hook it directly to your PC and copy large files from it with TeraCopy, or more accurately measure with CrystalDiskMark? Then hook it to Pogo and check speed with:

$this->bbcode_second_pass_code('', 'hdparm -tT /dev/sda # read speed
dd count=100 bs=1M if=/dev/zero of=/media/USB_RAID/test oflag=asynk # write speed')

Can use Iozone, Iperf or dbench to measure read & write speed over NFS or Samba. What's the plug processor load when reading from and writing to the RAID - you can see it with Htop?

[mastashake57]

$this->bbcode_second_pass_quote('sambul13', 'I')nteresting...pls give more details. I'm curious, what you're using the RAID for and how often? Is the enclosure or drives in it getting hot over time?

What Pogoplug model do you use with it? What file system the drives are formatted to? Can you measure read & write speed to the RAID - hook it directly to your PC and copy large files from it with TeraCopy, or more accurately measure with CrystalDiskMark? Then hook it to Pogo and check speed with:

$this->bbcode_second_pass_code('', 'hdparm -tT /dev/sda # read speed
dd count=100 bs=1M if=/dev/zero of=/media/USB_RAID/test oflag=synk # write speed')

Can use Iozone, Iperf or dbench to measure read & write speed over NFS or Samba. What's the plug processor load when reading from and writing to the RAID - you can see it with Htop?

[mastashake57]

I popped a quick test to get things started.

$this->bbcode_second_pass_code('', '# hdparm -tT /dev/sda

/dev/sda:
Timing cached reads: 516 MB in 2.00 seconds = 258.05 MB/sec
Timing buffered disk reads: 84 MB in 3.01 seconds = 27.92 MB/sec')

[mastashake57]

Some more tests...

$this->bbcode_second_pass_code('', '[root@pogoweb ~]# dd count=100 bs=1M if=/dev/zero of=/srv/test oflag=sync
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 13.5831 s, 7.7 MB/s

[root@pogoweb ~]# rm /srv/test

[root@pogoweb ~]# dd count=1000 bs=1M if=/dev/zero of=/srv/test oflag=sync
1000+0 records in
1000+0 records out
1048576000 bytes (1.0 GB) copied, 74.4073 s, 14.1 MB/s

[root@pogoweb ~]# rm /srv/test

[root@pogoweb ~]# dd count=10000 bs=1M if=/dev/zero of=/srv/test oflag=sync
10000+0 records in
10000+0 records out
10485760000 bytes (10 GB) copied, 754.853 s, 13.9 MB/s

')