From: Kari M. <kar...@tr...> - 2009-12-17 06:23:38
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----- "Bruce Smith" <bw...@re...> wrote: > >>Under the hood, ESX and ESXi are really Linux, so it seems silly to > me > >>that it requires a Windows client to admin the server. > > > > I wondered about this, because ESXi claims one of its differences > with > > ESX is that it doesn't rely on an underlying OS. To which I thought: > eh? > > They try to hide it, but it's still Linux (or based on Linux). A > more > stripped down version of Linux, but still Linux. There is a hack you > can do to let you SSH into ESXi and get a shell prompt to prove it to > yourself. ESX Classic v4 Service Console is 64-bit Redhat Enterprise Linux, or actually a VMware's stripped down version of it. Compatible 'tough. You may even install your own RPMs there if you really want. Third parties like IBM/Tivoli, EMC/Legato, etc. utilise this when installing backup or management agents etc. ESXi v4 has a µClibc (uClibc, http://www.uclibc.org/) based Linux builtin. Just like FloppyFW and some others. You may compily static binaries and excute them there, but there is really no need for that. Both are very well remote managed with vSphere CLI, available for Linux and Windows. It is a set of Perl scripts which allows you to do just anything remotely. Windows version contains a version of ActivePerl. In vSphere 4, interesing thing about both ESX Classic and ESXi is that the boot process is just like any other Linux, but there is something peculiar in the initrd. It contains the hypervisor code. And it is enabled early. It also means, what you see after booting up either ESX version, is really a virtual machine! It is a special virtual machine (in ESX Classic called Service Console), which is used for management, and which can access the hardware. So, everything you see, the management etc. is Linux, but the hypervisor beneath really is VMware's own. History on that hypervisor goes to Stanford and the SimOS project there (google: simos vmware). I hope this clarifies things. br, Kari > - BS > > ------------------------------------------------------------------------------ > Come build with us! The BlackBerry(R) Developer Conference in SF, CA > is the only developer event you need to attend this year. Jumpstart > your > developing skills, take BlackBerry mobile applications to market and > stay > ahead of the curve. Join us from November 9 - 12, 2009. Register now! > http://p.sf.net/sfu/devconference > _______________________________________________ > Devil-linux-discuss mailing list > Dev...@li... > https://lists.sourceforge.net/lists/listinfo/devil-linux-discuss -- Kari Mattsson | Voice & SMS: +358-50-69000 Trivore Corp., P.O. Box 6, FI-20541 Turku, Finland http://trivore.com | http://mysync.eu | http://mysync.asia mySync Express - always in sync mySync Management - managed, secured, always |
From: John B. <sag...@gm...> - 2009-12-17 06:42:05
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Hi, Thanks for the input Frank & I'm sorry my thanks is so belated. (I've neglected much in the past 2 months.) My other problem with Virtual Box was that the utility of snapshots was so limited, the feature was useless. Has this been addressed? In VM Workstation, one is free to take as many snapshots as there is disk space & restart from any of them without affecting other snapshots. Thanks, Chip (I've no affiliation whatsoever with VMWare or Sun.) |