Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!weretis.net!feeder1.news.weretis.net!news.solani.org!.POSTED!not-for-mail From: Mladen Gogala Newsgroups: comp.os.linux.misc Subject: Re: External hard drive usage. NTFS or other file system? Date: Sun, 31 Aug 2014 17:13:55 +0000 (UTC) Organization: solani.org Lines: 27 Message-ID: References: <6pc6db-8gi.ln1@user-1943a.linux.individual.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Trace: solani.org 1409505235 17811 eJwFwQkBwDAIA0BLrBQCcnga/xJ2Z+qfD66bX6MxLHeRW+dlvLMyI4xxlFO62xTKvtVLcIAfMYYSNQ== (31 Aug 2014 17:13:55 GMT) X-Complaints-To: abuse@news.solani.org NNTP-Posting-Date: Sun, 31 Aug 2014 17:13:55 +0000 (UTC) User-Agent: Pan/0.139 (Sexual Chocolate; GIT bf56508 git://git.gnome.org/pan2) X-User-ID: eJwFwQERACAIA8BKIGO4OIJn/wj+Z9A5BSaRLx+qZOxY7bRUHHjctQVyJYRRCbvOqGm33wfsOg/J Cancel-Lock: sha1:9iygWs7b5eM41LuyLFeAMVCecsg= X-NNTP-Posting-Host: eJwNysEBwEAEBMCWIoelnFj0X0LuPWPHxQl1c7W1nZ6mDUrBU8xAE7siKF4rpd4V75ca0/n8TYcSmw== Xref: csiph.com comp.os.linux.misc:11854 On Sat, 30 Aug 2014 09:09:33 -0500, Robert Heller wrote: > I suspect that Mladen Gogala's problem is that a VMDK file is not really > a 'disk' in the normal sense, but some kind of sparce copy-on-write > psuedo disk (which might be fine for 'toy' VMs on a desktop system with > limited actual disk space). If he was using 'real' disk space (eg a LVM > logical volumn), things might be different. Of course VMDK file is not really a disk and virtual machine is not really a machine. With VMWare, it is possible to use LVM logical volume instead of file, it's called "RDM", which stands for "raw disk mapping". Essentially, it's a real LUN is mapped to the virtual machine to use it. However, I am using a desktop class machine and unfortunately don't have an EMC VMAX in my living room. It is very unlikely that I will ever have a full fledged SAN, so I am stuck with the files. VirtualBox cannot do RDM, but it doesn't really matter. As for the thin provisioning (a growing disk), I avoid it like a plague because it slows things down. My RDBMS/VM server is not a really fast machine and I am trying to get a decent performance out of it. That is why I defragment my file systems and use XFS. -- Mladen Gogala The Oracle Whisperer http://mgogala.byethost5.com