I was thinking of buying a DAS (like NAS but without network interface, direct USB to PC) as extra backup, but was also thinking to use normal HDs. It should be fine right? since I would use it as daily backup and not much else? I don't want to buy the super expensive NAS HD...
-
-
Replying to @WinterwolvesG
eSata to Sata or USB to Sata converter costs something like 10-20 Euro if you don't mind the hassle of connecting it
1 reply 0 retweets 0 likes -
Replying to @Mazurek64
sorry I meant getting something like this: https://www.amazon.it/TerraMaster-D2-310-velocità-Alloggiamento-Diskless/dp/B01CS4TNQC … and then use 2 HDD to do RAID1 backup, but I was thinking to get normal HD, not special ones
3 replies 0 retweets 1 like -
Replying to @WinterwolvesG @Mazurek64
From my notes.... Consumer non-NAS disks have issues with timeouts - Time-Limited Error Recovery TLER / ERC / CCTL https://www.smallnetbuilder.com/archives/nas/nas-features/31202-should-you-use-tler-drives-in-your-raid-nas …https://www.abmx.com/blog/what-is-tler …
1 reply 0 retweets 0 likes -
With TLER the disk limits the amount of time the disk will try to recover from an error by itself, it will instead pass the error up the stack (to the RAID layer) fairly quickly (often 7 seconds?).
1 reply 0 retweets 0 likes -
This is more of an issue with HW RAID, as some HW raid controllers will see a drive not responding (while it tries to self correct), and decide it went bad and fail it out of the array, forcing a rebuild.
1 reply 0 retweets 0 likes -
However it seems (?) it could still be an issue with soft raid in certain cases (see LKML wiki about SMR) Although, it seem modern WD drives Green to Blue to Red have spin downs and TLER tunable firmware, so you could use them, just be sure to overridehttps://serverfault.com/questions/478410/zfs-and-green-drives-tler/839020 …
1 reply 0 retweets 0 likes -
Also NAS grade HDDs are rated for more load/unload cycles, and it seems it that rating really does make some difference.
1 reply 0 retweets 0 likes -
That's all from my notes... Looking around, that TerraMaster *might* be using JMicron USB Bridge chip and JMicron port multiplier/raid chip... And in general doesn't seem like it is a real computer like most NAS are. So would be true hardware raid.
1 reply 0 retweets 0 likes
thanks for the explanation!
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.