You may access them using the context menu -> Show package contents.Īfter configuring the SmartGuard feature, Parallels will save an initial snapshot of some files (in the dark blue box. hdd file are in fact folders similar to apps. There is not much to add to bmike's answer except some aspects of what's happening under the hood: You should be able to look at your Time Machine backups with a tool like BackupLoupe after running for a week and confirm that you are only getting backup snapshots and that they are happening every 48 hours. It looks like Smart Guard marks all the files excluded from Time Machine except the backup snapshots and the optimize scheduled snapshots automatically every 48 hours. Once you have that set up, you can exclude the running VM files from Time Machine backup and save time/space on the backup media of incremental backups that might not actually be workable. Most people I know skip backing up virtual machines and implement an alternative method of saving user files off image (or syncing them) and/or setting a reminder to periodically make a snapshot backup of the state of the VM by scripting a shut down and then scripting a copy of the data files to a place where Time Machine will back up that periodic snapshot. The problem with timing issues is you might get a sane backup 9 times out of 10 or 99,999 out of 100,000 - but it's really about how much data you can afford to lose. Try restoring the Parallels VM to a new location and booting it. When you delete the base parent snapshot, all changes merge with the base virtual machine disk. Run a backup and then run tmutil compare to see what files are different than the ones saved in a snapshot. Deleting a snapshot consolidates the changes between snapshots and previous disk states and writes all the data from the delta disk that contains the information about the deleted snapshot to the parent disk. It also gets complicated based on which other storage settings you use for the virtual disk technology - and I'll leave that for Parallels support to answer in a knowledge base article - but how Time Machine works is easily tested. It looks like the vendor is changing the default behavior to accommodate Time Machine according to: Ideally, you would quit Parallels (or at least shut down the storage / finalize all the writes) and then make a backup to avoid missing files or having a file being saved in an "unusable" state. If the second pass fails, you miss that file. Basically, it collects a list of all files needing backup and when it gets to the file - it might skip it and save it to try again once the first pass is complete. If your file is open/locked/changing, then Time Machine will skip that file for that interval. If there were two disks then creating two separate file systems was necessary.Ī traditional hardware RAID configuration avoided this problem by presenting the operating system with a single logical disk made up of the space provided by physical disks on top of which the operating system placed a file system.Įven with software RAID solutions like those provided by GEOM, the UFS file system living on top of the RAID believes it’s dealing with a single device.Time Machine makes two passes on each file. Traditional file systems could exist on a single disk alone at a time. The file system is now aware of the underlying structure of the disks. More than a file system, ZFS is fundamentally different from traditional file systems.Ĭombining the traditionally separate roles of volume manager and file system provides ZFS with unique advantages. When you delete an intermediate Snapshot, the information it contains is merged into the next Snapshot automatically. Select the Snapshot you want to delete and click Delete. Common Address Redundancy Protocol (CARP) In Control Center, select the virtual machine with the Snapshot you want to delete and click the Snapshots icon. File and Print Services for Microsoft® Windows® Clients (Samba) Dynamic Host Configuration Protocol (DHCP) Lightweight Directory Access Protocol (LDAP) Locale Configuration for Specific Languages FreeBSD as a Guest on VMware Fusion for macOS® FreeBSD as a Guest on Parallels Desktop for macOS® RAID3 - Byte-level Striping with Dedicated Parity GEOM: Modular Disk Transformation Framework Debian / Ubuntu Base System with debootstrap(8) Installing Applications: Packages and Ports Network Interfaces, Accounts, Time Zone, Services and Hardening
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