Zimbra not affected by log4j (CVE-2021-44228)
After intensive review and testing, Zimbra Development determined that the 0-day exploit vulnerability for log4j (CVE-2021-44228) does not affect the current Supported Zimbra versions (9.0.0 & 8.8.15). Zimbra Collaboration Server currently uses log4j1 version 1.2.16 which doesn't contain the lookup expression feature that is found within versions 2.0 to 2.17, which is the cause of the vulnerability. Also, Redhat (CVE-2021-4104) vulnerability does not affect the Zimbra Collaboration Server version (8.8.15 & 9.0.0). For this vulnerability to affect the server, it needs JMSAppender, which the ZCS Server does not use, and the ability to append configuration files.

Multiple volumes for data and indexes in Zimbra FOSS

Running our Appliance (ZCA), ZCS on VMware, or any other virtual machine software? Post your thoughts here.
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juliano.morona
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Multiple volumes for data and indexes in Zimbra FOSS

Postby juliano.morona » Fri Oct 29, 2021 6:47 pm

For Zimbra FOSS, is there any advantage, for Zimbra or the OS, of using multiple volumes for data and indexes for the following scenario: one virtual disk with 15 TB or 3 virtual disks with 5 TB in the same storage area?


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L. Mark Stone
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Re: Multiple volumes for data and indexes in Zimbra FOSS

Postby L. Mark Stone » Mon Nov 01, 2021 2:33 pm

The hypervisors with which I am familiar allocate one thread for disk I/O for each disk provisioned to the virtual server.

This may or may not provide a performance benefit depending on how busy your system is and the actual physical storage underlying things.

Basically you’d need to provide us with more details around your storage infrastructure for us to provide specific suggestions.
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L. Mark Stone
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juliano.morona
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Re: Multiple volumes for data and indexes in Zimbra FOSS

Postby juliano.morona » Mon Nov 01, 2021 5:27 pm

Well remembered the condition of allocating a thread. It is a simple storage condition, an HPE 3PAR storage with 12 x 10K 6 TB SAS disks using RAID6.

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