3.292 bytes |
Service Hints & Tips |
Document ID: MCGN-3XGQUP |
Servers - Correct concurrent drive spin-up on power-up settings
Applicable to: Canada, United States
When more than 6 drives are configured for concurrent spin-up on power-up, the RAID drives may appear DDD then / or the System may shut down after the System has first powered up.
The maximum number of ServeRAID or ServeRAID II attached hard drives supported for spin-up on power-up is 6. The default setting on these Adapters / Controllers is 6 but results in a maximum of 2 drives per SCSI channel spinning up at power up of the System.
The following procedure will identify the number of drives configured for spin-up on power-up by the Adapter/Controller:
1. Boot to the "IBM ServeRAID and ServeRAID II Configuration Diskette".
2. Choose Option 7 "Advanced Features".
3. Choose Option 8 "Display/Change Adapter Parameters".
4. Choose Option 3 "Change Adapter Host/SCSI ID".
5. look at "Concurrent Drives(0-15)" This should be set to 6 or less. The default is 6.
Details
Configuring a ServeRAID or ServeRAID II Adapter / Controller to spin-up more than 6 drives on power-up of the System can result in some drives not completing spin-up (resulting in those drives in a DDD state) and / or the System power supply to shut off (resulting in the System powering off). This is caused by the combined power requirement of the System AND spin-up on power-up of MORE than 6 hard drives, which exceeds the power available from the System power supply.
SAS KEYWORDS:
PSY2, D/T8640, D/T8641, D/T8642, D/T8650, D/T8651, CONCURRENT, SPIN-UP, DDD, SHUT, DOWN, UNCLASSIFIED, DEFAULT, HARD, DRIVES, POWER-UP, SERVERAID, SERVERAID II, BACKPLANE, H164360
Search Keywords |
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Hint Category |
RAID, Retain | |
Date Created |
18-08-98 | |
Last Updated |
11-02-99 | |
Revision Date |
11-02-2000 | |
Brand |
IBM PC Server | |
Product Family |
Netfinity 7000, PC Server 320, PC Server 520, PC Server 704, PC Server 720, ServeRAID | |
Machine Type |
8651, 8640, 8641, 8650, 8642, Various | |
Model |
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TypeModel |
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Retain Tip (if applicable) |
H164360 | |
Reverse Doclinks |