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Q&A<br />
Subject VMware Metadata Inconsistency: Q&A<br />
Category Technical Notification<br />
Product Models EonStor Redundant Models<br />
Date June 7, 2011<br />
Document number <strong>PN11F065</strong><br />
A number of models in the EonStor family are potentially affected by a VMware metadata<br />
inconsistency issue. In other documents you have received, Infortrend has clarified the<br />
background of this issue and proposed a solution to avoid any problems associated with the<br />
issue.<br />
To provide customers a quick reference to relevant information, Infortrend has prepared this<br />
Q&A document to answer questions you may have regarding this issue. If this Q&A<br />
document, combined with the other documentation we have provided, does not answer all<br />
your questions, please contact Infortrend’s technical support teams.<br />
� Q1: From Infortrend’s notification, I understand that the issue involves VMware reporting<br />
metadata inconsistency. However, my VMware systems have not reported this metadata<br />
inconsistency, and my system is operating without any problems. In that case, will it be<br />
necessary to follow the proposed procedures by Infortrend?<br />
� A1: Yes, even if VMware has not reported any metadata inconsistency in your<br />
environment, and you’re using your system without any noticeable problems, we still<br />
strongly recommend that you follow the proposed firmware upgrade procedures. The<br />
issue may potentially affect your system in the future, and the proposed firmware upgrade<br />
will prevent that from happening.<br />
� Q2: Besides EonStor Redundant models, I’m also using other Infortrend storage<br />
systems. Are they also affected by this issue?<br />
� A2: No, only EonStor Redundant models are potentially affected. EonStor Generic<br />
models, as well as systems from other Infortrend product families (EonStor DS, ESVA,<br />
EonNAS), are not affected.<br />
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Q&A<br />
� Q3: I’m using an EonStor Redundant model that does not have a firmware version 3.64X<br />
or later, but uses an earlier firmware version. Does this issue also affect me?<br />
� A3: No, this issue only affects EonStor Redundant models that have a firmware version<br />
3.64X or later. There’s no need to take any action.<br />
� Q4: Originally I had not scheduled any firmware upgrades. Can I choose to not upgrade<br />
my firmware and continue to use my existing version?<br />
� A4: No, we strongly urge you to upgrade the firmware with the procedure we provided in<br />
order to make sure your EonStor Redundant system will not be affected by the<br />
aforementioned issue.<br />
� Q5: Upgrading my firmware will not be a problem. However, I’m wondering whether the<br />
firmware upgrade will be sufficient to guard against any potential problems. Can I skip the<br />
logical drive parity regeneration?<br />
� A5: No, as with the firmware upgrade, regenerating logical drive parity is necessary to<br />
make sure your system will not be affected. Please regenerate logical drive parity as<br />
described in the firmware upgrade procedure.<br />
� Q6: I’m trying to integrate the firmware upgrade into my schedule. Does Infortrend have<br />
any suggestions as to when the upgrade should be performed?<br />
� A6: Yes, we recommend that you upgrade your firmware as soon as practical, but not<br />
later than 90 days following receipt of our notification. Delaying the firmware upgrade<br />
increases the potential for problems associated with the aforementioned issue.<br />
� Q7: I understand the importance of logical drive parity regeneration and will conduct<br />
relevant procedures according to Infortrend’s suggestions. Nonetheless, I’m afraid my<br />
applications will suffer a performance impact. Can Infortrend provide any information<br />
about this performance impact?<br />
� A7: Logical drive parity regeneration is conducted as a background process, and users<br />
can continue to run their applications while regeneration is conducted. During this<br />
process, you may experience a minor performance impact. For more information, you<br />
can contact Infortrend’s technical support teams. Infortrend sincerely apologizes for any<br />
potential performance impact; we hope you understand that the reason we recommend<br />
this course of action is that you can continue to use your EonStor Redundant system in<br />
the future without any problems.<br />
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C o m p u t e r G m b H<br />
Carl-Zeiss-Str. 27-29 • D-73230 Kirchheim / Teck<br />
Tel. +49(0)7021-487 200 • Fax +49(0)7021-487 400<br />
www.starline.de
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