I just finished building a new JBOD and can't read any drives! oh how frustrating our hobby\lives can be. Hoping some others have also tried a similar setup and can point out where the failure may be.
(╯°□°)╯︵ ┻━┻
Setup:
Server --> LSI9200-8e --> sff-8088 --> SFF-8088 to SFF-8087 pci bracket --> Intel RES2SV240NC > Supermicro 846TC
SFF-8087 to SATA breakout cables are 1m
SFF-8088 is about 10ft
When the JBOD is connected server 2012 r2 won't boot. If the JBOD is connected after booting, most of the disks won't be detected and those that are experience IO errors. I have connected 8 drives without the Intel SAS expander, using both ports on the lsi9200, to isolate the issue however the same IO errors persist.
During testing installed a motherboard\processor in the 846 and the drives are detected when connected to onboard SATA or onboard SAS.
After all this troubleshooting i fear i am running into signaling issues due to the long path to reach the controller. I've read about SAS drives supporting different voltage levels to compensate the long path but nothing for SATA.
If this is indeed the case my plans of one server having several JBODs attached has died and i will need another solution or 1 server per set of 24 drives. (╯°□°)╯︵ ┻━┻
I've seen others with this setup and even found a post by Patrick with a similar setup, what could be going so wrong. Could this be a bad LSI9200 or a firmware update fix?
SAS Expanders, Build Your Own Cheap JBOD DAS/ SAS Enclosure
Hope someone out there can give me that 'could of had a v8 moment'.
(╯°□°)╯︵ ┻━┻
Setup:
Server --> LSI9200-8e --> sff-8088 --> SFF-8088 to SFF-8087 pci bracket --> Intel RES2SV240NC > Supermicro 846TC
SFF-8087 to SATA breakout cables are 1m
SFF-8088 is about 10ft
When the JBOD is connected server 2012 r2 won't boot. If the JBOD is connected after booting, most of the disks won't be detected and those that are experience IO errors. I have connected 8 drives without the Intel SAS expander, using both ports on the lsi9200, to isolate the issue however the same IO errors persist.
During testing installed a motherboard\processor in the 846 and the drives are detected when connected to onboard SATA or onboard SAS.
After all this troubleshooting i fear i am running into signaling issues due to the long path to reach the controller. I've read about SAS drives supporting different voltage levels to compensate the long path but nothing for SATA.
If this is indeed the case my plans of one server having several JBODs attached has died and i will need another solution or 1 server per set of 24 drives. (╯°□°)╯︵ ┻━┻
I've seen others with this setup and even found a post by Patrick with a similar setup, what could be going so wrong. Could this be a bad LSI9200 or a firmware update fix?
SAS Expanders, Build Your Own Cheap JBOD DAS/ SAS Enclosure
Hope someone out there can give me that 'could of had a v8 moment'.
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