i want long lasting external hard drive of 1 tb

An externally enclosed hard disk drive (rotational) has a few things against

longer life, because the supporting circuitry within the enclosure can fail.

~ And so when that happens, the drive itself may still be recoverable if that

can be placed inside a different enclosure & set to be readable from there.

Determining the durability and long-life of a hard disk drive within an enclosure

may vary depending on who made the enclosure, where & when it was made;

and the history of specific parts used inside. With some, you could replace a

few less-costly parts (or swap from other enclosure) to re-gain access to data.

https://duckduckgo.com/?q=best+external+hard+drive+durability+1+TB&t=ffsb&ia=web

The various maker and hardware brands offered there may not reflect the actual

parts within several brand name enclosures, so it would be best to learn who

uses what parts in their brands with that region. Some HDDs are best suited for

use in storage, some for low-power use, or 'green' may lack other type purpose

or not sustain re-use in emergency as boot-capable for clone in external device.

External enclosures could utilize solid-state-drives, although old spec connection

cable and port speeds may not be best suited for faster efficiency - at more cost.

Example of another idea, not so portable:

• NewerTech Voyager Plug and Play, Hot Swap, or add a
new 2.5" or 3.5" SATA I/II drive. Data Access Made Simple.

A hot-swapable hard drive peripheral with its own power supply and faster port

data speed, may be an idea; since it could use other capacities/speeds of HDD.

Good luck & happy trails! 🙂

Backblaze has done a lot of HDD durability tests and can help you pick a model that's more durable.

https://www.backblaze.com/blog/best-hard-drive-q4-2014/

As for sharing a drive between Mac and Windows, that's all up to the formatting you select on the drive. Without using an additional software on either computer, format the drive using ExFAT. If you want to use another format either the Mac or PC will need additional software.

A USB 3 drive will be both Mac and Windows compatible - how you format the drive determines its compatibility, not the hardware. There are two major components to an external drive - the enclosure and the hard drive. In general, the enclosure is the weakest component and for this reason for mission critical drives I don't purchase external drives at a store - I purchase high quality enclosures and hard drives separately. Here in the States I purchase my drive enclosures from OWC and I also buy Icy Dock enclosures. You may be able to find both in India. Look for bare drives that have 3-5 year warranties - these indicate a high level of confidence from the manufacturer.