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Intel® RAID Adapters RSP3TD160, RSP3MD088, RSP3DD080 and RSP3WD080 Hardware User Guide
2.9
Drive Support Limits
The next table describes the SAS/SATA drive support limits of the Intel® Tri-Mode RAID adapterts
Specification
Maximum virtual drives per adapter
Maximum drive groups per adapter
Maximum virtual drives per drive group
Maximum drives per drive group
Maximum physical devices per adapter
Maximum hot spares per adapter
Maximum spans per virtual drive
Maximum enclosures
** This setting is firmware dependent.
2.10 Over temperature protection
The Intel® Tri-Mode RAID adapters are designed to operate at a maximum 55 degrees Celsius with a
minimum of 200 LFM air flow, this ensures the internal ROC IC will operate at less than 105 Celsius. If for any
reason there's an overheating, the internal ROC over temperature protection circuitry will operate like this:
- If the ROC reaches 110 degrees Celsius, the over temperature LED is turned on, I/O is throttled and the
event "MR_EVT_CTRL_TEMP_ABOVE_OPTIMAL_RANGE" is be registered in the adapter's log.
- if the ROC temperature goes down below 105 degrees Celsius (mostly due to I/O throttling), the over
temperature LED is turned off, the event "MR_EVT_CTRL_TEMP_WITHIN_OPTIMAL_RANGE" is registered in
the adapter's log and I/O throttling is turned off.
- If the ROC reaches 116 degrees Celsius, the over temperature LED continues to lit, I/O continues to throttle,
the event "MR_EVT_CTRL_TEMP_CRITICAL " is registered in the adapter's log, then after 10 seconds of
operation the cache is flushed, pending I/Os are completed and the ROC enters into the "Montask" state, in
which state all I/Os stop except through the UART debugging interface.
2.11 UART Interface
The Intel® Tri-Mode RAID adapters include a UART interface for special debugging purposes. The UART
connector debug port requires a special cable and Intel support to gather detailed ROC/IOC status. The
UART connector uses the layout shown in the following table.
The default communication parameters are 115,200 b/s, 8-bit characters, no parity bit, one stop bit, and no
Table 5. SAS/SATA drive support limits
RSP3TD160F
64
64
16
32
64
64
8
3**
Table 6- UART Connector Pinout
Pin
Function
1
UART_TX
2
Gnd
3
UART_RX
4
1.8 V
RSP3MD088F
RSP3DD080F
64
64
64
64
16
16
32
32
64
64
64
64
8
8
3**
3**
RSP3WD080E
32
32
16
32
64
63
8
2**
14
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