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SATA 2.5" with max height of 9.5mm<ref>Sony lists compatibility as 9.5mm height, physically a 12.5mm can also fit, though a bit snuggly. Tried it with an ancient ST9190AG 0.504" 12.80mm (measured 12.3mm) drive, including the sled as usual</ref>, minimal storage size 160GB ([http://tweakers.net/categorie/50/interne-harde-schijven/producten/#filter:TY1BCoQwDEXv8tdFmpa2sQdw5wlkFiJdFHQQHUSQ3t3UjZNFwkse-RfWLU-pz19ErbCvaery_EvbjniBdFvHUq8gr6WgsIyn4EPCRcEHqtoxzogDDAeRDLN069jiIwrbf4WYzLMmH_yboJv3fds4lFJu 198 HDD models], [http://tweakers.net/categorie/50/interne-harde-schijven/producten/#filter:TY1LDsMgDETvMmsUYVCAcIDueoKqiyhBKmrSRhD1o4i712STzmIs22_sDffwfT_TCI-cbyMElhSHcI4PeCmQlzCc4rSGlOE3kOxqmesW1EoWJ-b-w62Ru1AEjKWKvfoJ_gLlLEPKOXbdOo0rI07_I-RI7WMy1hwfZHOc75oWpZQf 5 SSHD models] and [http://tweakers.net/categorie/674/solid-state-drives/producten/#filter:TY1BCoUwEEPvknWRdort2AO48wSfvxDpoqAf0Y8I0rvbVlBnkSHJgxyYlzD4LvzgpMA6-6EN498vK9wBMo3Of8o1lJHpIDD1e7KaZPFRZM5kbutHuA-IbaKIOamuWeN7MfbFKFZUcmXIPhtU0T3QVDVijCc 362 SSD models] comply to that). Ofcourse if you [http://www.psdevwiki.com/ps3/Dual_Firmware#Solutions_for_swapping_.2F_externalise_the_harddrive externalise the harddrive], (e.g. with a [[Nyko]] [[:File:Nyko_Databank_PS4_-_image2.jpg|Data Bank]]) there is a whole world of 3.5" drives that are larger in storage size and also cheaper to be gotten.
SATA 2.5" with max height of 9.5mm<ref>Sony lists compatibility as 9.5mm height, physically a 12.5mm can also fit, though a bit snuggly. Tried it with an ancient ST9190AG 0.504" 12.80mm (measured 12.3mm) drive, including the sled as usual</ref>, minimal storage size 160GB ([http://tweakers.net/categorie/50/interne-harde-schijven/producten/#filter:TY1BCoQwDEXv8tdFmpa2sQdw5wlkFiJdFHQQHUSQ3t3UjZNFwkse-RfWLU-pz19ErbCvaery_EvbjniBdFvHUq8gr6WgsIyn4EPCRcEHqtoxzogDDAeRDLN069jiIwrbf4WYzLMmH_yboJv3fds4lFJu 198 HDD models], [http://tweakers.net/categorie/50/interne-harde-schijven/producten/#filter:TY1LDsMgDETvMmsUYVCAcIDueoKqiyhBKmrSRhD1o4i712STzmIs22_sDffwfT_TCI-cbyMElhSHcI4PeCmQlzCc4rSGlOE3kOxqmesW1EoWJ-b-w62Ru1AEjKWKvfoJ_gLlLEPKOXbdOo0rI07_I-RI7WMy1hwfZHOc75oWpZQf 5 SSHD models] and [http://tweakers.net/categorie/674/solid-state-drives/producten/#filter:TY1BCoUwEEPvknWRdort2AO48wSfvxDpoqAf0Y8I0rvbVlBnkSHJgxyYlzD4LvzgpMA6-6EN498vK9wBMo3Of8o1lJHpIDD1e7KaZPFRZM5kbutHuA-IbaKIOamuWeN7MfbFKFZUcmXIPhtU0T3QVDVijCc 362 SSD models] comply to that). Ofcourse if you [http://www.psdevwiki.com/ps3/Dual_Firmware#Solutions_for_swapping_.2F_externalise_the_harddrive externalise the harddrive], (e.g. with a [[Nyko]] [[:File:Nyko_Databank_PS4_-_image2.jpg|Data Bank]]) there is a whole world of 3.5" drives that are larger in storage size and also cheaper to be gotten.


SSD can be used, but it seems that on the PS4 there is even less incentive ([http://www.gtpla.net/wp-content/uploads/2010/12/Hvx2a.png compared to PS3]) to replace the drive for a SSD, best price/performance are still 7200rpm drives or true hybrid SSHD drives
SSD can be used, but it seems that on the PS4 there is even less incentive ([http://www.gtpla.net/wp-content/uploads/2010/12/Hvx2a.png compared to PS3]) to replace the drive for a SSD, best price/performance are still 7200rpm drives.
* http://www.pcper.com/reviews/General-Tech/PlayStation-4-PS4-HDD-SSHD-and-SSD-Performance-Testing
* http://www.pcper.com/reviews/General-Tech/PlayStation-4-PS4-HDD-SSHD-and-SSD-Performance-Testing
* http://uk.ign.com/wikis/playstation-4/PlayStation_4_Hard_Drive_Speed_Test_Comparison
* http://uk.ign.com/wikis/playstation-4/PlayStation_4_Hard_Drive_Speed_Test_Comparison
* http://www.eurogamer.net/articles/digitalfoundry-2016-is-it-worth-upgrading-your-ps4-with-an-ssd
* http://www.eurogamer.net/articles/digitalfoundry-2016-is-it-worth-upgrading-your-ps4-with-an-ssd
in this respect, it would be interesting to see the performance of the Western Digital Black-II WD1001x06xdtl which has 1TB of platter storage and 120GB of NAND SSD storage (which will not work since the PS4 will not boot properly and it displays a error message that the [[System Firmware|Operating System]] needs a [[Harddrive]] with 160 GB of free space at least - and it seems that this [[Harddrive]] would be totally insufficient even when the SSD part, which it seems that the PS4 has access for it, would have 160 GB or even more of free space. The PS4 is not able to access the 1 TB of space from the HDD part, so you would not have any space advantage. Even if it would have access to both parts, how it can manage both parts when it needs to create [[Files on the PS4#Partitions|15 Partitions]] for running properly (15 Partitions distributed on the SSD and HDD together)? It's a similar situation when you want to run this [[Harddrive]] on a normal Computer '''before you installed a operating System'''. Any Operating System detects the HDD part only and you can use the SSD part only after installing several drivers.). <!--// which is another insufficient offer so long you need to install the drivers on the slower HDD part and you would need to copy the Operating System to the SSD part ;( (sure, for a Computer you have endless opportunities and it's probably very easy to create custom drivers on a open system, compared to a (still?) closed system like the PS4 (the answer would be probably to visit Antarctica and feeding the penguins :)) //-->


it is unsure if TRIM is enabled by default for UFS on the PS4, but on BSD in general it can be enabled with ''tune2fs -t enable'' : http://forums.freebsd.org/showthread.php?t=28004 see also : http://www.wonkity.com/~wblock/docs/html/ssd.html
it is unsure if TRIM is enabled by default for UFS on the PS4, but on BSD in general it can be enabled with ''tune2fs -t enable'' : http://forums.freebsd.org/showthread.php?t=28004 see also : http://www.wonkity.com/~wblock/docs/html/ssd.html
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