Hello,
I've build a storage system based on Debian Linux with a 2.6.28
kernel. It houses 18 GB of storage based on 20 disks in RAID 6 using
software RAID.
The funny thing is that this box does read speeds of 1.1 GB/s, which
beats many hardware-based RAID cards.
I am impressed. Of course IO would be another issue, this is only
linear reads. But it's nice. It should go faster, it did 1.1 GB/s with
10 disks, it should do more with 20. I think there is some hardware
bottleneck, but I don't know for sure. Anyway, it is a NAS and the
Gigabit NIC is the limit here, so who cares anyway.
I like to thank the developers for enabling me to build a relatively
cheap and large storage array without the need for a special hardware
controller.
For pictures, additional specs etc. please visit my blog-post (no ads).
http://louwrentius.blogspot.com/2009/07/20-disk-18-tb-raid-6-storage-based-on.html
Hello Louwrentius ,
On Sun, 2 Aug 2009, Louwrentius wrote:
Hello,
I've build a storage system based on Debian Linux with a 2.6.28
kernel. It houses 18 GB of storage based on 20 disks in RAID 6 using
software RAID.
The funny thing is that this box does read speeds of 1.1 GB/s, which
beats many hardware-based RAID cards.
I am impressed. Of course IO would be another issue, this is only
linear reads. But it's nice. It should go faster, it did 1.1 GB/s with
10 disks, it should do more with 20. I think there is some hardware
bottleneck, but I don't know for sure. Anyway, it is a NAS and the
Gigabit NIC is the limit here, so who cares anyway.
I like to thank the developers for enabling me to build a relatively
cheap and large storage array without the need for a special hardware
controller.
For pictures, additional specs etc. please visit my blog-post (no ads).
http://louwrentius.blogspot.com/2009/07/20-disk-18-tb-raid-6-storage-based-on.html
Nice stats & thank you for reporting them .
Tho , You might want to watch these drives carefully they appear to be
commodity desktop system harddrives . From techreport's info anyway . I do
hope I've pick the wrong model number .
Quoted from: http://techreport.com/articles.x/14200
"Even so, that's a good segue into Samsung's warranty coverage for the
F1, which lasts for three years?the de facto industry standard for desktop hard
drives. Interestingly, the F1's component design life specifications suggest
the drive should last an additional two years before it begins to degrade."
--
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| James W. Laferriere | System Techniques | Give me VMS |
| Network&System Engineer | 2133 McCullam Ave | Give me Linux |
| babydr@baby-dragons.com | Fairbanks, AK. 99701 | only on AXP |
+------------------------------------------------------------------+
2009/8/3 Mr. James W. Laferriere [off-list ref]:
Hello Louwrentius ,
On Sun, 2 Aug 2009, Louwrentius wrote:
quoted
Hello,
I've build a storage system based on Debian Linux with a 2.6.28
kernel. It houses 18 GB of storage based on 20 disks in RAID 6 using
software RAID.
IT's 18 TB indeed (stupid me)
Tho , You might want to watch these drives carefully they appear to
be commodity desktop system harddrives . From techreport's info anyway . I
do hope I've pick the wrong model number .
No I deliberately chose desktop drives, it's not for business use.
They are from several different batches, so I don't expect them to
fail me at the same time.
With Regards
Louwrentius
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