Sun StorEdge[TM] A5X00 (Photon) Array and Host hub slot position update

Asset ID:	1-71-1008763.1
Update Date:	2009-09-14
Keywords:

Solution Type Technical Instruction Sure

Solution 1008763.1 : Sun StorEdge[TM] A5X00 (Photon) Array and Host hub slot position update

Related Items


Sun Storage A5000 Array
 Sun Storage A5200 Array

Related Categories


GCS>Sun Microsystems>Storage - Disk>Modular Disk - Other

PreviouslyPublishedAs
212026

Steps to Follow

Network StorEdge Engineering are constantly updating and reviewing
the most appropriate ways to configure Sun StorEdge devices to achieve
the maximum reliability and stability of the StorEdge product set.
These changes are usually detailed in the User and Install documentation,
and as such it is strongly recommended that engineers installing ANY Sun
equipment periodically review the documentation provided to ensure that
latest practices and installation guidelines are being adhered to.
One of these changes is to the A5X00 array and host, hub slot cabling sequence.
The current engineering guidelines as detailed in the Network Array
Configuration Guide 805-0264-XX (-14 at the date of writing this INFODOC)
supplied with every A5X00 Array details the following as the new recommended
guideline for A5x00 arrays and host slot placement in hubs.
Hub Slot    0       1       2       3       4      5        6
	  ---------------------------------------------------------
	  |  4th  |  3rd  |  2nd  |  1st  | 1st   | 2nd  | UNUSED |
	  | ARRAY | ARRAY | ARRAY | ARRAY | HOST  | HOST |        |	
	  ---------------------------------------------------------
Please Note: There should be NO gaps e.g. with only 1 host and 1 array
connected hub slot position 4 would have the host connection and slot
position 3 the A5X00 array. It also not recommended to leave GBIC's
inserted in hubs with no active device connected.
Engineering tests have shown that this latest hub configuration gives
improved FC-AL signal quality and a more reliable FC-AL signal retransmission.
Those customer sites that have hubs configured in the original method
(as detailed in pre -14 versions of the 805-0264-XX Network Array
Configuration Guide) should at a convenient time update their configuration
to the latest guidelines to ensure that the marginal problems that have been
observed under some operating conditions are prevented.
Those sites that are seeing marginal A5X00 related errors may benefit
from updating their hub configurations to these latest guidelines.

Product
Sun StorageTek A5000 Array
Sun StorageTek A5200 Array
Sun StorageTek A5100 Array

Internal Comments
This does not preclude the use of good diagnosis techniques to find the true
cause of a reported A5X00 FC-AL problem. As is normal after any FC-AL
component change or reconfiguration StorTools mpat_lbf tests should be
run as a minimum test to confirm correct FC-AL loop operability.

Previously Published As
19205

Change History
Date: 2003-05-20
User Name: Administrator
Action: Migration from KMSCreator
Comment: updated by : Laurie Hutchins
comment : Reissued -this article belongs to Storage per Hardware-systems
date : May 25, 2000

updated by : Rene Vega
comment : Document belongs in Storage Group.
date : May 17, 2000

updated by : No owner
comment : Moved internal comments to "Internal" and changed
status to "Public"
date : May 27, 1999
Version: 0
Product_uuid
2a83ce34-0a18-11d6-8498-8ec5d44f476b|Sun StorageTek A5000 Array
2a8acc34-0a18-11d6-87ef-bd9528a0b933|Sun StorageTek A5200 Array
2a875298-0a18-11d6-8960-b3c71159a860|Sun StorageTek A5100 Array

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