SMR vs CMRDoes it really matter? When does it and when doesn't it?
>>106448779BUMPShingled Magnetic Drives are said to be slower, but, is that really a bad thing?
>>106448779>>106449249They're all slow as shit. We know you're just dumping TB of pirated porn/music/games/movies/etc. on there, who cares
>>106449465Efficiency, dumb faggot
>>106449249not really, HD speed no longer means anything. just make them last forever and you'll make 90% of people happy.
>>106448779Writing rate of 80-120 MB/s vs 140-160 MB/s
>>106448779This is well documented you dumbfuck.if you are storing movies and pictures, noif you are actually using the drive, yes>>106449537smr/cmr is irrelevant to that.
>>106449571Enraged faggot responding scornfully. Kek
>>106449545This
If you're watching movies and archiving it really doesn't matter
>>106448779Write a small amount on SMR and it has to rewrite the whole zone it's in. Depending on your use case, that might or might not be a fair tradeoff for the increased space it gives.Storing a bunch of backups or a movie collection? You won't see much difference if any.Using it as a drive in a RAID setup? It's going to suck big time.
>>106448779>>106450314So using it with something like ZFS which does tons of tiny writes all the time it's going to get fucked.SMR is unusable for server/NAS.Bit of a shame that all 2.5" HDDs are SMR since they're almost an order of magnitude more efficient than 3.5" HDDs (<1W vs 5W idle), so if there were 2.5" CMR HDDs those would be awesome for a low power NAS.
Why do these just work and are so cheap
Is there a difference in reliability between the two?
>>106452942They are the same disks with different firmware, of course, CMR needs 10-20% more area (and plates) for the same capacity.And bit rot should be unnoticeable because the firmware takes care of them with ECC
>>106453339so which is better?
>>106453551yes
>>106450340you cant even use them on zfs lol
What's more relevant for speed is they need to be 7200rpm, be careful on that. The tech won't make any big difference in the real world for doing basic stuff like playing vidya or watching a movie, they're fast enough to do anything, SMRs or CMRs.
>>106454451Compared to 5400 rpm, 7200 drives are unrealiable, it's not worthy. If you need speed use SSD + HDD
>>106454533I've never seen that with dozen of HDDs. Generally 5400rpms are external drives nowadays, and they can fail like any mechanical objects with greater speed. Where that myth come from ?
>>106454633>are external drives nowadaysNo, most HDD are 5400. For example for WD:>Blue - 5400>Red - 5400>Purple - same as Red>Black - 7200Rare for normal users/enterprise>Red Pro - 7200>Gold - 7200
>>106454533What kind of WD hardrive is pic related?
>>106448779>ShingledHigher storage space because you're layering the writable area to some degree.Slower writes because you have to rewrite from the bottom shingle to tue top shingle.Possibly shorter drive life because you end up rewriting data that doesn't necessarily have to be rewritten.>ConventionalSmaller drive space because no shingling.Faster drive writes and longer drive life because you're not dealing with the rewrite behavior described above.>Which do I choose?If you're using it for data that rarely, if ever, changes (e.g. storing pirated media) then SMR is fine.If you're constantly writing to the disk for whatever reason (e.g. security camera video) then you'll want CMR.
>>106454662long gone are the days of 15k RPM enterprise Cheetah and 10k RPM gaming-grade Raptors
>>106454730I'll say SMR because it's a NAS drive.
>>106455537>15k rpm Imagine the noise
>>106454662The HDDs people are actually buying are 7200 rpm.Enterprise HDDs massively outstrip consumer HDD sales.It should also be noted that in general the 7200 RPM drives have better warranties.
>>106455537Still available tho https://www.amazon.com/Seagate-Cheetah-15000RPM-Internal-ST3600057SS/dp/B002P4J3YI
>>106455555Nice numbers noise fag. A PC need to do lot of noise or it's gay.
