Hi,
I've received no response from Intel community forum regarding this topic:
"TLER/ERC/CCTL capable drives needed for PCH RAID?"
http://communities.intel.com/message/91107
Neither have I got a concrete answer for Intel support ticket 8000033427.
I wonder if my question is not valid.
question in brief:
When choosing RAID hard drives for using together with P55/H57 boards, are TLER/ERC/CCTL capable drives needed for a more stable RAID set up?
TLER/ERC/CCTL is a feature of a hard drive to accommodate RAID controller's management feature. I have collected some info and called hard drive manufactures in this regard.
WD TLER default sets to 7 seconds.
Seagate ERC default sets to 10 seconds.
Samsung CCTL default sets to 7 seconds.
These numbers may change for different versions/models. Some models may even allow users to change the timeout settings.
In the ticket 8000033427, an Intel engineer said that P55/H57 PCH, just like ICH7R, has a 10 seconds limit for a RAID member hard drive to reply to R/W commands before declaring this hard drive not responsive and dropping it from the RAID array, but he added Intel's PCH Software RAID does not truely support hardware enabled TLER/ERC/CCTL.
Thus, I don't know how to pick the best hard drives for the Intel PCH RAID array. If I choose hard drives built without TLER/ERC/CCTL features, these drives, while in its error recovery process, may be detected as not-responsive and dropped from the RAID array by PCH. On the other hand, If I choose TLER/ERC/CCTL drives, I've been warned about the incompatibility issues.
Any suggestions before I can get a clear answer from Intel chipset support on this? Or, shouldn't I be concerned about this issue?
I've received no response from Intel community forum regarding this topic:
"TLER/ERC/CCTL capable drives needed for PCH RAID?"
http://communities.intel.com/message/91107
Neither have I got a concrete answer for Intel support ticket 8000033427.
I wonder if my question is not valid.
question in brief:
When choosing RAID hard drives for using together with P55/H57 boards, are TLER/ERC/CCTL capable drives needed for a more stable RAID set up?
TLER/ERC/CCTL is a feature of a hard drive to accommodate RAID controller's management feature. I have collected some info and called hard drive manufactures in this regard.
WD TLER default sets to 7 seconds.
Seagate ERC default sets to 10 seconds.
Samsung CCTL default sets to 7 seconds.
These numbers may change for different versions/models. Some models may even allow users to change the timeout settings.
In the ticket 8000033427, an Intel engineer said that P55/H57 PCH, just like ICH7R, has a 10 seconds limit for a RAID member hard drive to reply to R/W commands before declaring this hard drive not responsive and dropping it from the RAID array, but he added Intel's PCH Software RAID does not truely support hardware enabled TLER/ERC/CCTL.
Thus, I don't know how to pick the best hard drives for the Intel PCH RAID array. If I choose hard drives built without TLER/ERC/CCTL features, these drives, while in its error recovery process, may be detected as not-responsive and dropped from the RAID array by PCH. On the other hand, If I choose TLER/ERC/CCTL drives, I've been warned about the incompatibility issues.
Any suggestions before I can get a clear answer from Intel chipset support on this? Or, shouldn't I be concerned about this issue?
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