Browsing Posts published in April, 2012

Reading Time: 3 minutes If you want to “play” with Windows 8 Consumer Preview or “Windows Server 8” Beta, then there are several installation options. Destinations Hard disk This the common solution, but mean the needs of a blank partition, or space to build a new partition, or the possibility to erase your disk. If you choose a dual boot configuration, of course, the bootloader must be modified to add the new entry. Physical installation permit to test most of the features and can give better performance (for example you cannot realize how fast is the boot procedure in […]

Reading Time: < 1 minute I’ve really proud to been invited by Nexenta to attend at the OpenStorage Summit EMEA 2012, a meeting hosted by Nexenta but open to the OpenStorage industry participating in panels, case studies and technical vendor presentations. This year the event is scheduled on 22nd — 24th May at the Hotel Mercure Amsterdam aan de Amstel in Amsterdam (The Netherlands). OpenStorage Summit EMEA 2012 will feature a myriad of top-class speakers who are the top minds in the OpenStorage / open-source software industry. For more information consult the meeting’s agenda. For registration form and main reason […]

Reading Time: 2 minutes As written in the previous posts, in the ESXi installation there are two copy of the system image located in two different partitions (see Partitions layout of system disk and More on partitions posts). The actual system image is located on the first 250 MB partition, formatted with plain old FAT16 filesystem, but using a special pseudo-filesystem on it (see VisorFS: A Special-purpose File System for Efficient Handling of System Images). The image itself, s.v00, is a 124 MB compressed file, which is decompressed on boot and contains the hypervisor operating system. Note that the […]

Reading Time: < 1 minute Some hours ago I have received an e-mail from VMware Technical Certification Team to my VCP5-DT certification in my official transcript:: The VMware education transcripts will now include your VMware technical certifications. Your online transcripts will reflect your VMware Certified Professional 5 – Desktop status as soon as you: – Confirm your shipping address – Consent to transcript release – Accept the VMware Certification Agreement

Reading Time: 2 minutes In a previous post I’ve described the partitions used by a ESXi installation (see ESXi – Partitions layout of system disk). Partitions are formatted with a FAT16 filesystem, but the ESXi files are stored into the banks partitions with a specific system that consist in some compressed archives containing the required files or more archives (as also described in the yesterday’s post about the reset of the root password). More details on the filesystem used is on the first number of the VMware Technical Journal, in the paper: VisorFS: A Special-purpose File System for Efficient […]

Reading Time: 2 minutes Reset the root password with ESX 3.x was quite simple, just because the service console was a partition writable a live CD… With ESX 4.x it was a little more complicated (the service console was basically a vmdk). But with ESXi things are more complicated, due to the partition layout, that ESXi works in RAM and that all configurations files are stored in the banks it special archive files. The file containing the password hashes is called “shadow” and it is is contained in  a nested structure of archives inside the state.tgz file.

Reading Time: 3 minutes As most people know, Intel adopt a Tick Tock model for processors development: a tick advances manufacturing technology, a tock delivers new microarchitecture. Usually this mean that a tick means processors with more frequency speed (sometimes also more cores and/or more cache) and a tock means usually new features (but not necessary more frequency speed and/or more cache/cores). But when a new generation (tick or tock) as been introduced, after some months, this usually means cheaper processors (or at similar price) compared to previous generation. Now a possible confusion could be generated by the Westmere […]

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