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White 5.25 inch magneto-optical disc in clear jewel case

Sony

Sony EDM650CWW 5.25" MO backup media 650MB 1 pack

SKU CH-QPWM-BHTKJ MPN EDM650CWW

Rewritable 5.25" magneto-optical disc stores 650MB with 1024-byte sectors

  • Total capacity650 MB
  • Media formatMO
  • Pack quantity1 Pack
  • Key features1024 Bytes/Sector
  • 650 MB capacity stores large archives
  • Magneto-optical technology enables reliable rewritable storage
  • 25 inch form factor fits standard drive bays
  • 1024 bytes per sector ensures data integrity
  • Single disc pack provides immediate backup media

Sony 650MB MO backup media

This 5.25" magneto-optical disk provides 650MB of rewritable storage in a single pack. It uses a 1024 bytes per sector format for data recording. The media suits archival workflows that require removable, non-magnetic cartridges. First listed by the manufacturer in 2006.

Thermals noise and power draw

The passive cartridge generates no operational noise and draws no power on its own. Heat output depends entirely on the host drive mechanism during read or write cycles. No active cooling is required for the media itself in normal desktop environments. Storage conditions within standard office temperature ranges preserve data integrity.

Sustained load behaviour

Repeated overwrite cycles are supported by the rewritable MO design without media degradation. The 1024 byte sector structure maintains consistent access patterns during long backup sessions. Data remains stable across extended archival periods when stored correctly. The single pack format limits total capacity to 650MB per cartridge.

How it compares

Measured against everything we stock in Backup Disks & Cartridges, at today’s prices. Recalculated every night.

Price $25.99
Cheaper than about 73% of the 136 comparable items (median $47.99).
Total capacity 650 MB
Lower than about 99% of the 23 comparable items (median 800 GB).

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Specifications

Product
Brand nameSONY
Model nameEDM650CWW
Total capacity650 MB
Size & build
Shipping weight0.45 kg
Package size203 × 152 × 25 mm
In the box
Pack quantity1 Pack
More details
Media formatMO

Questions about this item

How do I install the EDM650CWW disk in my 5.25" magneto-optical drive, and what step do people get wrong?

Insert the 5.25" cartridge label-side up until it clicks; the step people miss is letting the drive spin up fully before formatting, otherwise the 1024 bytes/sector structure is not written correctly.

What maintenance or replacement will the EDM650CWW need over time?

The rewritable MO surface withstands many erase cycles; replace the cartridge only if read errors persist after cleaning the drive lens with approved media.

What limit appears first when writing the 650MB capacity continuously?

Sustained writes hit the drive's thermal throttle before the media reaches its cycle rating, so pause between large jobs to maintain verify integrity.

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