Solved

EMC - Storage Array Error

Posted on 2014-02-12
4
820 Views
Last Modified: 2014-02-21
Hi there,

We have a CX3-80 and we started getting this error last week and we continuously get it a few times every day.  Any suggestions?

Time Stamp 02/12/14 14:52:36 (GMT) Event Number 71174001 Severity Warning Host CX3-PROC-A Storage Array APM00070904191 SP N/A Device N/A Description SFP Diagnostic condition "Transmit bias high warning" detected for physical port 2
 00 00 04 00 03 00 56 00 d3 04 00 00 01 40 17 a1 01 40 17 a1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 71 17 40 01

Thanks,
- Christian
0
Comment
Question by:Christian Palacios
  • 3
4 Comments
 
LVL 30

Assisted Solution

by:Duncan Meyers
Duncan Meyers earned 500 total points
ID: 39854348
That suggests that the SFP on  Port 2 on SPB is failing. You *may* also see CRC errors or similar on the matching port on the connected fibre channel switch.

I'd call it in to EMC and get the storage processor replaced. The SFP are fixed on a CX3-80, so the whole unit had to be replaced.
0
 

Author Comment

by:Christian Palacios
ID: 39868828
Hi Duncan,

Thank you.  What is the SFP?  If it fails, what can/could occur?  When you mean unit, do you mean the entire CX3-80 unit, not a hot-swappable part of the CX3-80 unit??

Thanks,
- Christian
0
 
LVL 30

Accepted Solution

by:
Duncan Meyers earned 500 total points
ID: 39868975
SFP = Small Form-factor Pluggable - the optical transceiver module that the FC cable plugs into. Often incorrectly referred to as a GBIC (Giga Bit Interface Converter) - on a CX3-80, it's soldered onto the storage processor board.

In this case, the unit is the affected storage processor sub assembly. It's 100% hot-swappable, but I'd recommend doing the swap at a quiet time as the replacement will temporarily affect array performance - and it obviously temporarily reduces redundancy. You should perform a couple of pre-checks before swapping a storage processor board. Check that the path balancing algorithm in VMware is set correctly (should be Round Robin or MRU) and for physical hosts, check that PowerPath is happy and reporting that paths are alive. If all that checks out OK, then the hosts will cope with losing a storage processor and LUNs will fail over correctly. You could also do a pre-emptive trespass of all LUNs on the faulty storage processor to its partner. To force a trespass (this is non-disruptive), right-click on the LUN in Unisphere or Navisphere and select Trespass.
0
 
LVL 30

Expert Comment

by:Duncan Meyers
ID: 39868999
Sorry - missed this bit: if the SFP fails, the array will continue to operate normally and whatever path balancing/path fail-over software you have will route FC frames down other paths to the arrays, but you've lost a level of redundancy and if you're working the array hard, you've potentially lost some performance too.
0

Featured Post

NAS Cloud Backup Strategies

This article explains backup scenarios when using network storage. We review the so-called “3-2-1 strategy” and summarize the methods you can use to send NAS data to the cloud

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Problem description :  Some external hard disks / USB flash drives do not show actual space as mentioned in the factory settings. This is a common problem when you use an 8 GB USB drive to make it bootable to install a firmware/ driver on a serv…
In this article we will learn how to backup a VMware farm using Nakivo Backup & Replication. In this tutorial we will install the software on a Windows 2012 R2 Server.
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…
This Micro Tutorial will teach you how to reformat your flash drive. Sometimes your flash drive may have issues carrying files so this will completely restore it to manufacturing settings. Make sure to backup all files before reformatting. This w…

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question