Don't turn on HDD until I need it

[anber]

I have PC with 1000 Gb SSD drive and 1000 Gb HDD drive. I use SSD drive always and mount HDD drive very rarely, once a week.
Recently I looked to its Smart and see that it has 520 Start/Stop count and 1800 Load/Unload cycles.
I believe that this in not very healthy for HDD. Is it possible to set up not turn it on until I do it manually?

[ClixTrix]

I doubt it. Normally, power to drives is enabled at system power-up.

Probably a better idea is to use an external USB-SATA caddy and plug-in the drive when needed. If you have USB 3.0, it works well. I have an ICYDOCK that works with both USB 3.0 and eSATA.

[Mute Ant]

You can manually tell a drive to spin-down and sleep until it's needed. Drives that are in use will immediately wake up again.
sudo hdparm -Y /dev/sda -----> /dev/sda: issuing sleep command: (drive spins down)
Drives that can't spin-down will just ignore the command. A USB flash stick for example...
sudo hdparm -Y /dev/sdc -----> /dev/sdc: issuing sleep command
SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 14 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

[anber]

You can manually tell a drive to spin-down and sleep until it's needed. Drives that are in use will immediately wake up again.
sudo hdparm -Y /dev/sda -----> /dev/sda: issuing sleep command: (drive spins down)
Drives that can't spin-down will just ignore the command. A USB flash stick for example...
sudo hdparm -Y /dev/sdc -----> /dev/sdc: issuing sleep command
SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 14 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

Yes it works. This command looks similar to sudo udisksctl power-off --block-device /dev/sda.

But is it possible to not start disk on system startup?
Cause it looks a bit strange to execute this command just on system startup.