Scampicfx
Contributor
- Joined
- Jul 4, 2016
- Messages
- 125
Hey guys,
I know that "SO" means "Server Offload", but what exactly are the differences between
- Chelsio T520-CR
- Chelsio T520-SO-CR?
There is a huge price difference between those two network adapters at our local dealer. In my opinion "Server Offload" sounds like an extra feature which imho whould mean that this network adapter is more expensive. However, this one is a lot cheaper than the T520-CR. Am I making any wrong assumptions? ;)
The reason for asking this point is, that recently I ordered a T520-CR via eBay. However, after installing this network adapter our system freezes during BIOS "Detecting onboard AHCI Devices". We use mainboard Supermicro X10SRH-CF and it freezzes at the Supermicro Logo. When looking into IPMI during this freezed Boot screen, we notice that the "PCH temperature sensor" displays "not present". This is kind of strange, because as soon as we unplug this network adapter, everything works smoothly again and PCH temperature sensor displays temperature correctly.
Personally, I hope that the network adapter we bought is kind of damaged. Therefore we want to buy an original new sealed network adapter and test it again.
It's very frustrating right now since our new FreeNAS server is just about to get started, but now remains shut down due to this network adapter issue :/
Our dealer offers both network adapters (Chelsio T520-CR and T520-SO-CR) and I'm a bit unsure which one to choose!
Thanks so much!
EDIT: There is an official statement from Chelsio:
When I get correct and after stuyding the product sheets, this means:
T520-SO-CR offloads only 32 connections
T520-CR offloads 32.000 connections and is the more performant network adapter.
Cheers
Scampicfx
I know that "SO" means "Server Offload", but what exactly are the differences between
- Chelsio T520-CR
- Chelsio T520-SO-CR?
There is a huge price difference between those two network adapters at our local dealer. In my opinion "Server Offload" sounds like an extra feature which imho whould mean that this network adapter is more expensive. However, this one is a lot cheaper than the T520-CR. Am I making any wrong assumptions? ;)
The reason for asking this point is, that recently I ordered a T520-CR via eBay. However, after installing this network adapter our system freezes during BIOS "Detecting onboard AHCI Devices". We use mainboard Supermicro X10SRH-CF and it freezzes at the Supermicro Logo. When looking into IPMI during this freezed Boot screen, we notice that the "PCH temperature sensor" displays "not present". This is kind of strange, because as soon as we unplug this network adapter, everything works smoothly again and PCH temperature sensor displays temperature correctly.
Personally, I hope that the network adapter we bought is kind of damaged. Therefore we want to buy an original new sealed network adapter and test it again.
It's very frustrating right now since our new FreeNAS server is just about to get started, but now remains shut down due to this network adapter issue :/
Our dealer offers both network adapters (Chelsio T520-CR and T520-SO-CR) and I'm a bit unsure which one to choose!
Thanks so much!
EDIT: There is an official statement from Chelsio:
T520-so will offload (tcp/rdma/iscsi) a handful of connections where the t520 will offload 32K connections. Offloaded connections see a 2x to 3x improvement in performance.
When I get correct and after stuyding the product sheets, this means:
T520-SO-CR offloads only 32 connections
T520-CR offloads 32.000 connections and is the more performant network adapter.
Cheers
Scampicfx
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