Software Defined Storage; Buzz or not!?

The term “software defined” is hot right now in IT. Almost anything has to be defined by software, including storage. That shouldn’t be a problem, because software defined software is better performing, scalable, flexible, and of course much more affordable.

For me, and probably for you also, main aspect of SDS is the software layer between the storage nodes and the hosts, needing the storage. Storage nodes can be actual storage systems (e.g EMC VNX / VMAX, NetApp Filers, HDS and so on) as well as servers with loads of direct attached storage. With that in mind, I see NetApp clustered ONTAP and EMC VPLEX also as examples of software defined storage. “Traditional” storage systems are bundled together to act as one big storage provider for your infrastructure. Read more »


Brocade FabOS; use wildcards in your commands

It is probably not wide known, but the CLI of FabOS gives the opportunity to the administrator to use wildcards in the commands.

I usually use them changing the zoning using the CLI. Most of my customers are using simple computer names for their servers, like server001, server002 and so on…

It is very hard to see all zones for those servers using the commands:

I prefer to use the syntax

This syntax is generating the same output as the earlier three commands. Maybe nice to say that wildcards are also available when piping to grep or something.




Commvault SnapProtect; Indexcache is growing rapidly

Currently for one customer I am using SnapProtect for protecting the CIFS shares on a NetApp filer. This is working perfectly, as long as normal backup jobs are completed successfully.

Now and then, I have indexing problems. This requires me to create a new full backup, so a new index is created. There is one additional problem, backup jobs that are not completed successfully are filling up the index cache.

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ESXi: Scripted root password change

For security reasons it can be necessary to change the root password of all the ESXi servers in your environment. Some security policies require a password change on a regularly base. Also immediate changes can occur, for example when an administrator is leaving the company.

Password change on a few servers can be done manually, but for larger infrastructures it is very helpful to script this. A script performing this, is described in this article…

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