Verbatim 43834 100GB 4x MDISC BDXL archival - 5 pack JC

Mettent un temps fou poyr être gravés quand ça marche...

I bought these to backup the data I cannot afford to lose in a virus, malware or ransomware attack. Bought from Amazon EU, and each disc is shrink wrapped and all barcodes match Verbatim's website. I saw concerns about scratches in the inner ring and burn failures so I was concerned given the price. While the scratches are definitely there, they're in the inner ring where the 3 serial numbers (1 per layer) are, so nothing is written there and they don't impact quality. The discs are identified as MID: VERBAT-IMk-000, which verifies on the BluRay site as HTL (High-to-low Inorganic) BDR V3.0. Burned with a Pioneer BDR-XD05T drive from Aug 2014 (which has no claim to support MDisc on it, but works because MDisc adheres to all BluRay standards). Used ImgBurn (from a mirror site to avoid the Adware from the genuine site) and created a 100GB ISO Image (Mode1/2048 using ISO9660+Joliet+UDF with UDF 1.50). My first disc image contained 25,180 files in 595 folders totalling 92,368,211,531 bytes. I also MD5 summed each file and saved the checksums to the BD as well. It took 26 minutes to create the image on the local disc, then I burned at 2x speed for safety which took 2 hours 55 minutes, then 1hr 31 minutes to verify the disc to the ISO. I also verified all MD5sums after the disc had cooled off which tool another 2 hours 32 minutes. Both the ImgBurn and the MD5Sum file verifications were good. The discs show up as 90.2GB in Windows, but that is because of the difference in units i.e. GB vs GiB. In short, I am happy that these Discs are as described and when burned at 2x speed, have no failures. I would say ignore the "you don't get 100GB", the "scratches on the inner ring" and "burn failure" reviews on here. My opinion is that those reviews come from misunderstandings about the tech and probably burning directly without using ISO first. I will be buying more of these again. As to whether they last longer than standard BD-XL or whether I should be using single layer 25GB MDiscs, only time will tell. I'll probably check the MD5 sums once evert couple of years to ensure the backups are still valid and take more/move files to a new disc if there are issues.

I started using my recorded and these discs today. So far, I burned two out of five and I've experienced no errors. Take in count that write speed is 4x. I believe there are other discs, more expensive, that are to be written at 6x. At 4x it writes at 18 MB/sec (like a typical USB pen drive for me) and it takes nearly two hours to burn a 90 GB blu-ray, plus an additional hour and half to verify the data written. Worth mentioning that I was able to burn 90 GB only. Nero didn't allow me to write more than 90 GB.

Tylko 1 z 5 płyt 100gb udało się zapisać. Pozostałe ulegały uszkodzeniu w trakcie zapisu. Nie miałem tego problemu z płytami 25gb. Nie polecam. Szkoda pieniędzy.

Voglio scrivere questa recensione perché leggendone alcune ho letto che era una truffa ma non è così, dal sito ufficiale Verbatim ti inviano con un link proprio a questo prodotto su Amazon. È arrivato tutto come da descrizione e ho testato subito il Bluray Mdisc immediatamente con il masterizzatore USB Asus acquistato contemporaneamente e consegnati insieme. Risultato perfetto, masterizzazione perfettamente riuscita e dati scritti perfettamente. Ottimi supporti