A reliable weekly backup for your important documents

Tax returns, work spreadsheets, school assignments, scanned receipts and family records often sit across Downloads, Documents and cloud folders. A weekly copy to a separate external drive gives them a second physical home without changing how you work.

Copying files once is not an automatic backup. Hardware fails, folders get deleted, and ransomware can encrypt reachable files. An unattended schedule removes the forgotten-copy problem, while dated copies make an earlier version easier to recover.

The best setup depends on your computer. Windows can run a scheduled PowerShell copy, while macOS has the purpose-built Time Machine system. A drive used by both needs different formatting from one dedicated to a single computer.

Before choosing, estimate the size of your files, identify the folders that matter and check whether sensitive records need encryption. Keep originals in their normal locations; the backup should work around your routine.

Choose a drive that suits your devices

A 1TB or 2TB portable SSD usually fits documents, while 4TB suits large photo collections. Compare models at JB Hi-Fi, Officeworks and Amazon.com.au. Under Australian Consumer Law, a faulty product may qualify for repair, replacement or refund, but that guarantee does not restore lost data.

Match the file system to the devices. exFAT is the simplest choice for a drive shared by Windows and Mac and supports files larger than 4GB. NTFS suits Windows-only use, while Time Machine requires APFS or older HFS+ on a Mac. Formatting erases the drive, so never format the only copy of anything.

For portability, a small bus-powered SSD works well at home in Sydney, Melbourne, Brisbane, Adelaide or Perth. Check that its USB-A or USB-C cable fits your computer, and use a surge-protected outlet where possible. Australian Type I wall plugs and summer storms make that extra protection sensible.

Prepare the drive and choose the source folders

Connect the drive and confirm its volume name in File Explorer before copying anything. Windows usually assigns a letter such as E:, while a Mac shows it in Finder. Create a clearly named folder such as E:\WeeklyBackups or its Mac equivalent to prevent accidental copies to the internal disk.

Select sources deliberately. Most people need Documents, Desktop and selected project folders, but excluding Downloads prevents caches and installers from filling the drive. If OneDrive contains placeholder files, open the important ones and choose “Always keep on this device” before the weekly copy.

Treat the drive as private storage. BitLocker To Go can protect a Windows drive, while encrypted Time Machine backups cover Macs; cross-platform users can use a password-protected VeraCrypt container. Store the encryption key separately from the drive and test that it opens without the original computer.

Schedule an exact weekly copy on Windows

Windows File History provides continuous backups but does not offer a simple weekly-only choice. For a predictable Sunday archive, use Task Scheduler to run a short PowerShell script. Edit the source and drive letter, then save the script as C:\Scripts\WeeklyBackup.ps1 using a plain-text editor.

$source = "$env:USERPROFILE\Documents"
$drive = "E:\"
$destination = Join-Path $drive "WeeklyBackups"

if (-not (Test-Path $drive)) {
    Write-Warning "External drive is not connected. Nothing was copied."
    exit
}

$stamp = Get-Date -Format "yyyy-MM-dd_HHmm"
$target = Join-Path $destination $stamp
New-Item -ItemType Directory -Path $target -Force | Out-Null
Copy-Item -Path "$source\*" -Destination $target -Recurse -Force

Test it first in PowerShell with powershell.exe -NoProfile -ExecutionPolicy Bypass -File "C:\Scripts\WeeklyBackup.ps1". A dated folder should appear under E:\WeeklyBackups. If it does not, check the drive letter, confirm the source exists and review any error shown in the terminal.

In Task Scheduler, create a task with a weekly Sunday trigger at 10:30pm, then add the same PowerShell command under Actions. Set it to run when the computer is on and to start after a missed trigger. The clock changes during daylight saving in New South Wales, Victoria, South Australia and Tasmania, but not Queensland or Western Australia. Leave the drive connected when the task runs. If the slot overlaps with a Woolworths or Coles trip, check holiday opening hours before fixing the schedule.

Use Time Machine on a Mac

On a Mac, Time Machine provides versioned backups more reliably than a copied folder. Open Disk Utility, choose the external drive, select Erase and use APFS with a GUID partition map. This option erases the disk, so use a new or already verified drive.

Open System Settings, select General, then Time Machine and choose Add Backup Disk. Select the external drive, open Options and set Back Up Automatically Every to Weekly. Keep the drive connected; Time Machine catches up whenever the Mac is awake and the disk is available.

Enable Encrypt Backups if the drive contains tax, identity or work files, and store the recovery key in a password manager or another safe place. An encrypted backup remains protected if the drive is lost, but you still need the key to restore it.

Test the backup and recover older files

Run a restore test soon after setup. Open one recent document and one earlier dated copy, then confirm that they are not damaged. In Task Scheduler, check the Last Run result; on macOS, enter Time Machine and browse the Timeline for the required date.

For Windows, copy a file from the dated folder to a temporary desktop folder before replacing anything. On macOS, drag the needed version from Time Machine to the Desktop. Keep old weekly folders until newer backups have been verified, then remove the oldest ones to control space use.

Monitor drive health through the manufacturer's Windows or macOS tools and replace a drive that reports repeated errors. If the scheduled copy keeps failing, compare the symptoms with independent backup advice before changing settings, and confirm that the drive letter or volume name has not changed.

Compare the main backup methods

Each method offers a different balance of control, version history and setup effort. The comparison below focuses on external-drive backups for documents rather than complete device images.

Method	External-drive setup	Timing	Best for	Main limitation
Windows scheduled copy	PowerShell and Task Scheduler	Exactly weekly	Predictable dated archives	Requires script setup and manual restore knowledge
Windows File History	Control Panel settings	Automatic, commonly hourly	Continuous version history	No simple weekly-only setting
macOS Time Machine	Disk Utility and System Settings	Configurable as weekly	Mac folders with version history	Requires a Mac-formatted drive

A weekly scheduled copy is the closest match when you need one predictable archive. File History is easier for continuous protection, while Time Machine remains the strongest integrated choice on macOS. Choose the method you will maintain and leave enough free space for several generations.

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The protection to remember rests on three things: a separate destination, an automatic schedule and a tested restore. A drive containing files proves that copying occurred, but only a successful restore confirms that the routine can protect the documents you care about.

The safeguard to remember is a verified weekly copy that can actually be restored. It keeps Australian paperwork recoverable after a stolen laptop, deleted directory, ransomware lock or storm-related outage without making manual backups part of every evening.