Talk:Vblade - ATA over Ethernet
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==Comparision== | ==Comparision== | ||
| - | This isn't really a fair comparision for cost at all, after all | + | This isn't really a fair comparision for cost at all, after all Coraid's devices are SATA and Gigabit Ethernet optimized. |
But still it's a fun comparision to see what opensource hardware and software can get you. | But still it's a fun comparision to see what opensource hardware and software can get you. | ||
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===15 blades no included hard drives=== | ===15 blades no included hard drives=== | ||
| + | 15 blades x 750GB = max 11.25TB | ||
====Coraid==== | ====Coraid==== | ||
*[http://www.coraid.com/purchase.html SATA Storage - SR1520] | *[http://www.coraid.com/purchase.html SATA Storage - SR1520] | ||
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====Kurobox + Netgear Switch==== | ====Kurobox + Netgear Switch==== | ||
| - | *15 [http://www.revogear.com/ Kuro Box HG WR] | + | *15 [http://www.revogear.com/ Kuro Box HG WR] vblades |
*15 x $149 each = $2235 | *15 x $149 each = $2235 | ||
*[http://www.pricegrabber.com/search_techspecs_full.php/masterid=2682577 NETGEAR GS116 16-port Gigabit Switch 10/100/1000 Mbps] | *[http://www.pricegrabber.com/search_techspecs_full.php/masterid=2682577 NETGEAR GS116 16-port Gigabit Switch 10/100/1000 Mbps] | ||
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**'''Total:$2402''' | **'''Total:$2402''' | ||
| + | ===Savings=== | ||
<font color=red>'''Open Source Saves you $1594'''</font> | <font color=red>'''Open Source Saves you $1594'''</font> | ||
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- [[User:Ramuk|Ramuk]] 23:57, 27 August 2006 (EDT) | - [[User:Ramuk|Ramuk]] 23:57, 27 August 2006 (EDT) | ||
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| + | At 1000Mb/s / 8bits/Byte / 15 kuroboxes = 8.33 MB/Sec needed in transfer rate per kurobox RAIDed together to completely soak a 1Gb/s ethernet connection. Seems like it could be doable expecially with XFS....hmmmmmmmm | ||
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| + | - [[User:Ramuk|Ramuk]] 02:17, 28 August 2006 (EDT) | ||
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| + | ==My Setup== | ||
| + | #USB Drive | ||
| + | ##I bricked my LS when trying to mount an internal partition the first time I tried this, so I used a usb drive this time around. Which on my LinkStation was <tt>/dev/sda1</tt> - [[User:Ramuk|Ramuk]] | ||
| + | #My Client | ||
| + | ##In this case I have a [[w:Pentium III|PIII]]/600 [[w:Compaq_Armada|Compaq Armada]] laptop running [[w:Ubuntu (Linux distribution)|Ubuntu]] Dapper Drake. - [[User:Ramuk|Ramuk]] | ||
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| + | ==Transfer speeds== | ||
| + | |||
| + | *Very interesting indeed. Mounting a 20 GB [[w:USB|USB]] 2.0 [[w:External_hard_drive|External Drive]] over a [[w:100baseT|100baseT]] switch using the StarPort software from Rocket Division Software on a Windows XP computer I was able to get a sustained 4 Megabyte/sec or 32 MB/s transfer rate..... not too bad. I'll have to try it with a EXT3 block device and a Unix computer. [[User:Ramuk|Ramuk]] 01:36, 29 August 2006 (EDT) | ||
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| + | *EXT3 - Slightly dissapointing, however one would have to know what leveraging several of these devices together would get you. Using my ubuntu laptop attached via a [[w:100baseT|100baseT]] switch, transferring a 300Mb file I got about a 5Mb/s sustained transfer rate. Which does correlate well with Coraid's suggestion of 5-6Mb/s per blade. So 15 of these devices in a Level 5 raid array should produce (14*5*8) = 560MB/s transfer rate, which is about half the bandwidth of a Gigabit 1000MB/s switch. 02:01, 29 August 2006 (EDT) | ||
Latest revision as of 06:01, 29 August 2006
Comparision
This isn't really a fair comparision for cost at all, after all Coraid's devices are SATA and Gigabit Ethernet optimized. But still it's a fun comparision to see what opensource hardware and software can get you.
15 blades no included hard drives
15 blades x 750GB = max 11.25TB
Coraid
- SATA Storage - SR1520
- Total: $3996
Kurobox + Netgear Switch
- 15 Kuro Box HG WR vblades
- 15 x $149 each = $2235
- NETGEAR GS116 16-port Gigabit Switch 10/100/1000 Mbps
- $167
- Total:$2402
Savings
Open Source Saves you $1594
Conclusion
As I said certainly not a fair comparison, the Coraid hardware is different (SATA vs PATA) and optimized from a ethernet switching standpoint vs the Kurobox/Linkstation.
But still a savings of $1600 is nothing to sneeze at!
- Ramuk 23:57, 27 August 2006 (EDT)
At 1000Mb/s / 8bits/Byte / 15 kuroboxes = 8.33 MB/Sec needed in transfer rate per kurobox RAIDed together to completely soak a 1Gb/s ethernet connection. Seems like it could be doable expecially with XFS....hmmmmmmmm
- Ramuk 02:17, 28 August 2006 (EDT)
My Setup
- USB Drive
- I bricked my LS when trying to mount an internal partition the first time I tried this, so I used a usb drive this time around. Which on my LinkStation was /dev/sda1 - Ramuk
- My Client
- In this case I have a PIII/600 Compaq Armada laptop running Ubuntu Dapper Drake. - Ramuk
Transfer speeds
- Very interesting indeed. Mounting a 20 GB USB 2.0 External Drive over a 100baseT switch using the StarPort software from Rocket Division Software on a Windows XP computer I was able to get a sustained 4 Megabyte/sec or 32 MB/s transfer rate..... not too bad. I'll have to try it with a EXT3 block device and a Unix computer. Ramuk 01:36, 29 August 2006 (EDT)
- EXT3 - Slightly dissapointing, however one would have to know what leveraging several of these devices together would get you. Using my ubuntu laptop attached via a 100baseT switch, transferring a 300Mb file I got about a 5Mb/s sustained transfer rate. Which does correlate well with Coraid's suggestion of 5-6Mb/s per blade. So 15 of these devices in a Level 5 raid array should produce (14*5*8) = 560MB/s transfer rate, which is about half the bandwidth of a Gigabit 1000MB/s switch. 02:01, 29 August 2006 (EDT)
