Prime Day is June 23 to 26, and Lifehacker is sharing the best sales based on product reviews, comparisons, and price-tracking tools before it's over. 

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• New to Prime Day? We have a primer on everything you need to know. Sales are accurate at the time of publication, but prices and inventory are always subject to change.

This has not been a banner year for cheap storage. Demand from artificial intelligence data centers has pushed up consumer drive prices, so even the better Prime Day offers do not always match the lows seen in previous years. Still, anyone who needs more space now can save on portable drives, fast internal solid-state drives, large hard drives, and network-attached storage systems before the sale ends today. Here are the discounts worth considering:

Samsung T9 Portable SSD, 1TB: At $179.99, down from $287.99, the Samsung T9 makes sense for anyone regularly moving large photo, video, or game files between devices. It’s small enough to keep in a laptop bag and fast enough to work directly from the drive.

Samsung 9100 Pro, 2TB: The Samsung 9100 Pro is down to $349.99 from $679.99, but this is not an upgrade everyone needs. Aimed at newer high-performance computers, its PCI Express 5.0 performance is built for demanding gaming, video editing, and other data-heavy work. Older systems may not support the drive or take full advantage of its advertised speeds.

Crucial P510, 1TB: At $162.97, down from $224.50, the Crucial P510 is a less expensive way to add PCI Express 5.0 storage to a compatible computer. It’s still unnecessary for basic browsing and office work, but it could cut load and transfer times in a newer gaming or editing setup.

SanDisk Extreme Portable SSD, 2TB: At $232.99, down from $261.84, this is not the biggest discount here, but it gives you 2TB of portable solid-state storage without moving to a bulky desktop drive. It’s a practical choice for photographers, frequent travelers, or anyone whose laptop is constantly running out of space.

SanDisk Extreme Portable SSD, 8TB: At $709.99, down from $839.99, this older SanDisk Extreme model puts an unusually large 8TB of storage into a portable drive. That capacity comes at a steep price, so it makes the most sense for people carrying large video libraries or project archives who would otherwise need several smaller drives.

WD Elements Portable Hard Drive, 5TB: At $196.99, down from $274.99, the WD Elements gives you far more space for the money than a portable solid-state drive. The tradeoff is speed: It's better suited to backups and archived files than editing video directly from the drive.

WD My Passport Portable SSD, 1TB: At $184.99 for Prime members, down from $312.99, the WD My Passport SSD sits between basic backup drives and faster premium models. It’s compact, offers password protection and hardware encryption, and is a sensible option for carrying work files or personal documents that you would rather not leave unprotected.

Looking for something else? Retailers like Walmart and Best Buy run Prime Day-style sales that are especially useful if you don’t have Amazon Prime.

• Walmart’s Prime Day competition sale runs from June 22-28 and includes deals up to 50% off. It’s an especially good option if you have Walmart+. 

• Best Buy’s Prime Day competition sale runs from June 22-28, and has some of the best tech sales online. It’s an especially good option if you’re a My Best Buy “Plus” or “Total” member.

• Target’s Prime Day competition sale runs from June 23-26, with deals up to 50% off. You can become a Circle member for free.