NetApp Ontap 7.1

Byetzion 04/05/2006

I’ve had the pleasure of playing with Ontap Simulator. This is a marvelous tool, designed to simulate a real NetApp appliance, in an easy and affordable manner.

I’ve noticed a link to this simulator, in Oracle’s web site. I’m posting it here so you’ll get to know what I’m talking about. I’m playing with it on a Linux host. I’ve created virtual disks (small ones only. The simulator does not allow larger than 1G disks anyhow), and I’m playing with NFS, CIFS, Snapshots, etc.

If I have some surprising views on the matter, I will share them here.

Disk Storage | General Hardware | Linux

Connecting EMC/NetApp shelves as JBOD to a Linux machine

Byetzion 29/04/2015

Let’s say you have old shelves of either EMC or NetApp with SAS or SATA disks in them. And let’s say you want to connect them via FC to a Linux machine and have some nice ZFS machine/cluster, or whatever else. There are few things to know, and to attend in order for it to…

Disk Storage

Ontap Simulator, and some insights about NetApp

Byetzion 09/05/2006

First and foremost – the Ontap simulator, a great tool which surely can assist in learning NetApp interface and utilization, lacks in performance. It has some built-in limitations – No FCP, no disks (virtual disks) larger than 1GB (per my trial-and-error. I might find out I was wrong somehow, and put in on this website),…

Disk Storage | Linux

Reduce traverse time of large directory trees on Linux

Byetzion 14/12/202127/01/2023

Every Linux admin is familiar with the long time running through a large directory tree (with hundred of thousands of files and more) can take. Most are aware that if you re-run the same run-through, it will be shorter. This is caused by a short-valid filesystem cache, where the memory is allocated to other tasks,…

General Hardware | Linux | Virtualization

x86 Scale Up

Byetzion 11/09/2008

I have been introduced to a very cool software/hardware combination yesterday. It has been, without exaggerating, one of the coolest things I have seen in a while. As you may know, x86 has an issue with scaling up. It’s that x86 architectures and price don’t justify scaling up to tenths and hundreds of CPUs. The…

Disk Storage

IBM DS3400 expand Logical Drive (LUN)

Byetzion 06/05/2009

I have always liked IBM DS series management suite. I have claimed once that your first storage (and with it – your way of thinking about storage abstraction, I assume) is your favorite storage. I have been using the Storage Manager 9 for years now, even before it was 9 (I think that it was…

Disk Storage | Linux

dm-multipath and loss of all paths

Byetzion 13/05/2008

dm-multipath is a great tool. Its abilities were proven to me on many occasions, and I’m sure I’m not the only one. NetApp, for example, use it. HP use it as well (a slightly modified version, and still), and it works. A problem I have encountered is as follow – if a single path fails,…

One Comment

Anonymous says:

22/09/2007 at 7:12 pm

Good

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