{"id":"external-drives.are-cheap-unbranded-ssds-safe","url":"/faq/external-drives/are-cheap-unbranded-ssds-safe","category":{"id":"external-drives","title":"External drives"},"subcategory":{"id":"choosing-a-drive","title":"Choosing a drive"},"question":"Are cheap or unbranded external SSDs safe to use?","alt_questions":["Fake capacity SSD","Counterfeit external drive Mac","Very cheap 2TB SSD too good to be true","How do I check my SSD's real capacity?","no-name usb ssd reliable?"],"short_answer":"Be wary: some very cheap drives fake their capacity and lose data once they fill, and others use slow, short-lived parts. Buy a reputable brand from a trusted seller, and test a doubtful drive by filling it and checking the files before trusting it.","answer_markdown":"Be careful. Some very cheap drives report more capacity than they really have — they seem fine until they fill up, then silently lose or corrupt what you copied. Others use slow, low-endurance parts. A reputable brand from a trusted seller is the safer buy for anything that holds your files.\n\nIf you already have one:\n\n1. Copy a large amount of data onto it — close to its full size — then check that the files open and match the originals.\n2. Run **First Aid** in Disk Utility.\n3. Don't make it the only copy of anything until it has passed.\n\nStorage Studio's speed test checks speed, not true capacity, so a fake-capacity drive can pass it — test the capacity yourself before relying on it.","answer_html":"

Be careful. Some very cheap drives report more capacity than they really have — they seem fine until they fill up, then silently lose or corrupt what you copied. Others use slow, low-endurance parts. A reputable brand from a trusted seller is the safer buy for anything that holds your files.

\n

If you already have one:

\n
  1. Copy a large amount of data onto it — close to its full size — then check that the files open and match the originals.
  2. Run First Aid in Disk Utility.
  3. Don't make it the only copy of anything until it has passed.
\n

Storage Studio's speed test checks speed, not true capacity, so a fake-capacity drive can pass it — test the capacity yourself before relying on it.

","answer_text":"Be careful. Some very cheap drives report more capacity than they really have — they seem fine until they fill up, then silently lose or corrupt what you copied. Others use slow, low-endurance parts. A reputable brand from a trusted seller is the safer buy for anything that holds your files.\n\nIf you already have one:\n\n1. Copy a large amount of data onto it — close to its full size — then check that the files open and match the originals.\n2. Run First Aid in Disk Utility.\n3. Don't make it the only copy of anything until it has passed.\n\nStorage Studio's speed test checks speed, not true capacity, so a fake-capacity drive can pass it — test the capacity yourself before relying on it.","tags":["buying","fake capacity","reliability"],"related":[{"id":"external-drives.what-kind-of-external-drive-should-i-use-with-storage-studio","question":"What kind of external drive should I use with Storage Studio?","url":"/faq/external-drives/what-kind-of-external-drive-should-i-use-with-storage-studio"},{"id":"external-drives.how-does-the-drive-speed-test-work","question":"How does the drive speed test in Storage Studio work?","url":"/faq/external-drives/how-does-the-drive-speed-test-work"},{"id":"external-drives.how-do-i-run-first-aid-on-an-external-drive","question":"How do I run First Aid on an external drive in Disk Utility?","url":"/faq/external-drives/how-do-i-run-first-aid-on-an-external-drive"}],"applies_to":"all","last_reviewed":"2026-10-01","title":"Are cheap or unbranded external SSDs safe to use? — Storage Studio FAQ","description":"Be wary: some very cheap drives fake their capacity and lose data once they fill, and others use slow, short-lived parts. Buy a reputable brand from a trusted seller, and test a doubtful drive by filling it and checking the files before trusting it.","crumbs":[{"name":"Home","path":"/"},{"name":"FAQ","path":"/faq/"},{"name":"External drives","path":"/faq/external-drives/"},{"name":"Are cheap or unbranded external SSDs safe to use?","path":"/faq/external-drives/are-cheap-unbranded-ssds-safe"}],"jsonld":{"@context":"https://schema.org","@type":"FAQPage","url":"https://storagestudio.us/faq/external-drives/are-cheap-unbranded-ssds-safe","inLanguage":"en","dateModified":"2026-10-01","mainEntity":[{"@type":"Question","name":"Are cheap or unbranded external SSDs safe to use?","alternateName":["Fake capacity SSD","Counterfeit external drive Mac","Very cheap 2TB SSD too good to be true","How do I check my SSD's real capacity?","no-name usb ssd reliable?"],"acceptedAnswer":{"@type":"Answer","text":"Be careful. Some very cheap drives report more capacity than they really have — they seem fine until they fill up, then silently lose or corrupt what you copied. Others use slow, low-endurance parts. A reputable brand from a trusted seller is the safer buy for anything that holds your files.\n\nIf you already have one:\n\n1. Copy a large amount of data onto it — close to its full size — then check that the files open and match the originals.\n2. Run First Aid in Disk Utility.\n3. Don't make it the only copy of anything until it has passed.\n\nStorage Studio's speed test checks speed, not true capacity, so a fake-capacity drive can pass it — test the capacity yourself before relying on it.","url":"https://storagestudio.us/faq/external-drives/are-cheap-unbranded-ssds-safe"}}]},"fragment":"
\n
\n\n\n\n\n
\n
\n

External drives · Choosing a drive

\n

Are cheap or unbranded external SSDs safe to use?

\n

Short answer: Be wary: some very cheap drives fake their capacity and lose data once they fill, and others use slow, short-lived parts. Buy a reputable brand from a trusted seller, and test a doubtful drive by filling it and checking the files before trusting it.

\n

Be careful. Some very cheap drives report more capacity than they really have — they seem fine until they fill up, then silently lose or corrupt what you copied. Others use slow, low-endurance parts. A reputable brand from a trusted seller is the safer buy for anything that holds your files.

\n

If you already have one:

\n
  1. Copy a large amount of data onto it — close to its full size — then check that the files open and match the originals.
  2. Run First Aid in Disk Utility.
  3. Don't make it the only copy of anything until it has passed.
\n

Storage Studio's speed test checks speed, not true capacity, so a fake-capacity drive can pass it — test the capacity yourself before relying on it.

\n\n

Last reviewed

\n\n

Related questions

\n

Also available as Markdown and JSON.

\n
"}