Best posts made by matteo nunziati

@Francesco-Provino another thing. I have vm managed by a supplier. With multi tenant a clear separation of duties must be defined.
In our case the local sys admin is in charge to keep everything updated. In this scenatio hypervisor level backup helps not entering the vm to backup it. Surely less efficient especially with db which have their own backup procedures.

@jaredbusch said in what programming language can I learn now ???:

@roopankumar said in what programming language can I learn now ???:

@scottalanmiller need to experiment myself and thinking of what limit can I able to push myself into this. change of course too alternate techie thing

Start by automating your job with scripting in the appropriate language for your systems (powershell or bash).

Then one you understand the logic flow of scripting, you can choose to get into development and actual programming.

This provides you with the benefit of improving your knowledge and your work environment at the same time.

this. After, two of the general purpouses languages most commonly used for glue/automation are Perl and Python.

Anyway nowdays if you want to automate your job you just write really small scripts (helpers) then most of the stuff - where available - is done with Ansible/Salt/put-yours-here.

IF you really need custom scripts which grow wild (Powershell and Bash grow quite fast) just think about switching to Python or Perl

@tim_g did you try the same thing with virtmanager? Install it where kimchi is and try. Just to sort out issues: system, setup, bug...

@stacksofplates said in If a business were all linux would they use Office 365:

@jaredbusch said in If a business were all linux would they use Office 365:

such as GSuite

I think you can run Google Docs apps offline if you install Chrome on Linux. Never tried it, but I know you can run all of the other Chrome apps that way.

you can but generally they suck. We have gsuite at work (mostly for gmail) and offline mode is terrible IMHO.

I was considering to test this stuff too. Also in my search on the web I've discovered that even virtmanager+libvirt can manage lxc containers. This is handy as you just need the same tooling you use for kvm/xen

@emad-r look here
it is sort of hyper-v linked disks.

not necessarily useful given other free productrs, but hpe vsa is free under 1 TB
I was not aware of this. Just sharing here for other non informed guys.

@dustinb3403 I'm running it on microSD .... Brrrr

About bench. I've made some tests with my new server before deployment. Disabling controller and disk cache helped a lot understanding real perf of disks.
I've seen sata ssd x4 raid5 outperform 15k sas x4 raid 10.
Enabling cache at controller level blends things, even with big files making benches a bit more blurry.

@wrx7m have you ever considered this site for av comparisons? Just found the shadowserver foundation few months ago...

@quixoticjustin said in Using In-Memory Databases, Anyone?:

@networknerd said in Using In-Memory Databases, Anyone?:

@jimmy9008 said in Using In-Memory Databases, Anyone?:

@networknerd said in Using In-Memory Databases, Anyone?:

• They actually point out in the podcast that they had the best success with in-memory databases on local storage or SAN (NAS not a good choice) and that ethernet was the networking avenue of choice.

Not sure what this means... not that I know about this, but, if its in memory, its in... memory, right? So, what does it have to do with local storage, SAN, or NAS?

Anyway, other databases load what is used frequently in to memory so its quick to access. Its why lots of places would build an SQL server with a ton of RAM - so that SQL can put what is used often in to RAM (fast) and keep it available... right?

Well, at some point you do have to write the data to disk (whether synchronously or asynchronously) to keep a less volatile copy of the data (at least that is what I remember from the podcast). It seems like synchronous data writes would be near impossible because you cannot keep it going at the same speed.

I definitely do not claim to understand it all really well.

Not necessarily. Persistence to disk is not a guaranteed feature of in memory databases. It is common, for sure, but not guaranteed. But you should think of it as taking a backup of the database, not as storing it normally. That's the big difference between the two approaches.

Interesting.

yeas it is a lot of time since developers have created a new gen of net tools but still I feel more confy with old stile commands

@wrx7m said in Trend Micro OfficeScan Renewal Coming Up - Replacements?:

@matteo-nunziati said in Trend Micro OfficeScan Renewal Coming Up - Replacements?:

@wrx7m have you ever considered this site for av comparisons? Just found the shadowserver foundation few months ago...

I don't believe I have. Thanks for the tip. Looks interesting.

unfortunately they don't track all AV suites... some results are still interesting

@scottalanmiller honestly I would not go with btrfs regardless of facebook...

@scotth said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@matteo-nunziati So, CentOS 7 , EXT4, LVM with compression turned on.
After all, I'm using consumer / smb desktop hardware. From what I've read, ZFS would require more resources than I have available if I wanted dedupe. My storage box will only have 8 GB RAM.

Generally go XFS but even ext4 is good. ZFS requires something like 1gb per raw tb of storage but mostrly for raid/compression. It raises up to 5gb per tb if you want dedup.
So 8gb=8tb of raw (pre raid) storage.
ZFS is nice byt you usually can go w/out its features in smb

@scotth compression?! What compression?!

@scotth said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@matteo-nunziati said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@scotth compression?! What compression?!

Sorry. I saw lz4 compression on the volumes in FreeNAS. Thought it was kinda everywhere.
I'll pay attention.

AFAIK transparent compression (at fs level) is available in ntfs, zfs, btrfs only

@scottalanmiller said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@matteo-nunziati said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@scotth said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@matteo-nunziati So, CentOS 7 , EXT4, LVM with compression turned on.
After all, I'm using consumer / smb desktop hardware. From what I've read, ZFS would require more resources than I have available if I wanted dedupe. My storage box will only have 8 GB RAM.

Generally go XFS but even ext4 is good. ZFS requires something like 1gb per raw tb of storage but mostrly for raid/compression. It raises up to 5gb per tb if you want dedup.
So 8gb=8tb of raw (pre raid) storage.
ZFS is nice byt you usually can go w/out its features in smb

The memory is for dedupe. It needs very little for compression and RAID. Those use CPU, but not RAM (much).

Have to dig a bit: I found these numbers months ago in some freebsd zfs how-to

@scottalanmiller said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@matteo-nunziati said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@scotth said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@matteo-nunziati So, CentOS 7 , EXT4, LVM with compression turned on.
After all, I'm using consumer / smb desktop hardware. From what I've read, ZFS would require more resources than I have available if I wanted dedupe. My storage box will only have 8 GB RAM.

Generally go XFS but even ext4 is good. ZFS requires something like 1gb per raw tb of storage but mostrly for raid/compression. It raises up to 5gb per tb if you want dedup.
So 8gb=8tb of raw (pre raid) storage.
ZFS is nice byt you usually can go w/out its features in smb

The memory is for dedupe. It needs very little for compression and RAID. Those use CPU, but not RAM (much).

@scottalanmiller said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@matteo-nunziati said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@scotth said in I tried NAS4Free, FreeNAS, OMV, ... Lots of suggestions to move to Linux. I'm willing. Point me please.:

@matteo-nunziati So, CentOS 7 , EXT4, LVM with compression turned on.
After all, I'm using consumer / smb desktop hardware. From what I've read, ZFS would require more resources than I have available if I wanted dedupe. My storage box will only have 8 GB RAM.

Generally go XFS but even ext4 is good. ZFS requires something like 1gb per raw tb of storage but mostrly for raid/compression. It raises up to 5gb per tb if you want dedup.
So 8gb=8tb of raw (pre raid) storage.
ZFS is nice byt you usually can go w/out its features in smb

The memory is for dedupe. It needs very little for compression and RAID. Those use CPU, but not RAM (much).

No you are right 1gb is for dedup

@luismc said in Port - How to go about setting up a client to be virtualized?:

CAD files are small, about 350KB on average. Apparently some of these Revit files are pretty big (150MB). One of the employees with a "faster computer" opens a file and it takes about 30 seconds. Others go grab a coffee and come back. Kind of absurd, if you ask me. The network is setup with GigE.
I chose SSDs because the client insisted. Correct me if I'm wrong, but I don't think there would be a big difference in pricing if I did HDD RAID10 vs SSD RAID5, at least that's what I thought when I ran the specs.

For little files on LAN, SATA could be the bottleneck but for bigger files LAN is the bottleneck. Some 3D modeling softwares act really bad with Samba (linux layer to expose services to winodws clients). Or Solidworks files hang at opening from a linux NAS (buffalo). Moving them to a real windows machine solves the problem.

For remote access: how many people need this simoultaneously?! how meny times?!

@scottalanmiller is not fan of road warrior VPN but I'll invent more on a proper WAN connection and go SATA or NL-SAS OBR10.

Also would check what limits employer loading: is the PC really running lot of computation? is the server really spinning? is just everything stalling due to SMB protocol issues?!