
der Speicher
storage / memory
A technical device, component, or medium on which digital data can be stored.
Der Speicher meines Laptops ist fast voll.
My laptop's storage is almost full.
storage / memory
Loading your saved state.

storage / memory
A technical device, component, or medium on which digital data can be stored.
Der Speicher meines Laptops ist fast voll.
My laptop's storage is almost full.

attic
The space directly under the roof of a house, used for putting away and storing things; an attic.
Die alten Weihnachtssachen sind oben auf dem Speicher.
The old Christmas things are upstairs in the attic.

warehouse / storage
A large building or container for storing goods in large quantities, such as grain, water, or merchandise.
Die alten Speicher in der Hamburger Speicherstadt sind heute eine Touristenattraktion.
The old warehouses in Hamburg's Speicherstadt are now a tourist attraction.

store / reserve
A part of an organism in which energy or certain substances are kept for later use.
Fettzellen dienen dem Körper als wichtiger Energiespeicher.
Fat cells serve as an important energy store for the body.
The noun 'der Speicher' (storage, memory) is derived directly from the verb 'speichern' (to save, to store). Anything that can store something can be called a 'Speicher', whether it involves data, objects, goods, or energy.
Ich muss die neuen Fotos auf einer externen Festplatte speichern.
I need to save the new photos on an external hard drive.
The meaning of 'Speicher' (storage, memory) is almost always clear from context. Words like 'Computer' (computer) or 'Handy' (mobile phone) point to data storage (m01), 'Dach' (roof) to the attic (m02), and 'Hafen' (harbor) or 'Getreide' (grain) to a warehouse (m03).
Der alte Speicher im Hafen wird heute für Konzerte genutzt.
The old warehouse in the harbor is used for concerts today.
When 'Speicher' means the attic, the preposition 'auf' is almost always used. You put things 'auf den Speicher' (into the attic, accusative), and they are then located 'auf dem Speicher' (in the attic, dative).
Bringst du bitte die Kiste mit den Winterkleidern auf den Speicher?
Could you please take the box with the winter clothes up to the attic?
In a technical context, typical expressions are 'der Speicher ist voll' (the storage is full), 'den Speicher erweitern' (to expand the memory/storage), or 'etwas im Speicher ablegen' (to store something in memory/storage). It is also often used in compound words such as 'Arbeitsspeicher' (RAM) or 'Handyspeicher' (phone storage).
Mein Handyspeicher ist schon wieder voll, ich muss Fotos löschen.
My phone storage is full again; I need to delete photos.
floor / ground
Boden and Speicher can both refer to the space directly under the roof. Boden is a general term for this attic space, while Speicher is especially appropriate when things are stored or put there.

Durch die kleine Luke bringt man die alten Kisten auf den Speicher.
The old crates are taken up to the attic through the small hatch.
Durch die kleine Luke gelangt man auf den Boden.
You can reach the attic through the small hatch.