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Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
85
Table 61: RLS payload
Table 62: RLS ACC payload
Table 63: Link Error Status block
The Drive's Link Error Status block is defined as follows:
Link Failure Count: This is a count of the number of times that the port's receiver loses synchronization for a continuous
period of time determined by R_T_TOV. When a link failure condition is detected by the drive, it will transmit LIP(F8) on that
port.
Loss of sync count: This is a count of the number of times that the port's receiver loses synchronization.
Loss of signal count: Not implemented.
Primitive Sequence Protocol error: Not implemented.
Invalid Transmission Word: This is a count of the number of times that the port detects an invalid transmission word on its
receiver.
Invalid CRC Count: This is a count of the number of frames received with invalid CRC. Only one invalid CRC is counted for
each command nexus.
17.3.12 Report Node Capabilities (RNC)
The Report Node Capabilities (RNC) ELS is used to exchange node capabilities, vendor identification, and other vendor
unique information. It is used to discover which document identifiers (along with their associated FC-4 protocols and profiles)
Byte Item Size (Bytes)
0-3 0F00 0000h 4
4 Reserved 1
5-7 Port Identifier 3
Byte Item Size (Bytes)
0-3 0200 0000h 4
4
-
27
Link Error Status Block 24
Byte Item Size (Bytes)
0-3 Link Failure Count 4
4-7 Loss of sync count 4
8-11 Loss of signal count 4
12-15 Primitive Sequence Protocol error 4
16-19 Invalid Transmission Word 4
20-23 Invalid CRC Count 4