RAID0 Sequencial Speed and Reliability

[Aminados]

Alright I need some help here....

What HDD is faster for sequential speeds in 2x RAID0? RED, RE4, BLUE or BLACK??

I'm currently a bit confused, so....

RED is made for RAID, has 3 year warranty but is 5400 rpm, however.... I've seen a few reviews that show that it beats BLACK witch is a 7200 rpm HDD. I know RED is a single 1tb platter but really... is it faster? can someone confirm this?

BLUE, 2 Year warranty

, 7200rpm HDD, not made for RAID, 1TB platter, so I can see how it beats BLACK in sequential.

RE4, made for raid, 5 year warranty, enterprise grade, 7200 rpm, close to BLACK performance? I don't know.... and do I REALLY need these??

Black, 5 year warranty, faster then RED, BLUE, RE4? in access times and random speeds witch I don't need. I only need high sequential speed. No model has a 1TB Platter as far as I know.


So..... "apparently", RED and BLUE are faster then Black in sequential speeds but witch is faster? RED or BLUE? and for raid, do I really need a "made for raid" HDD? Are the BLUE or BLACK going to give me trouble in RAID?? Other then TLER what other advantages is there with the RED?

What about reliability? does the warranty mean something? How reliable is the BLUE HDD?

😕😕😕

 

[Jeff7181]

I'm pretty sure you can now get Black drives with 1 TB platters now. Regardless... I'd get a Black over Blue due to the warranty. IMHO, having 3 extra years of free replacements available is worth the trade-off in sequential performance.

 

[Cerb]

"Made for RAID" as you say just means they have a hard-coded 7 second time-out on error recovery. Nothing more. The REs, since the RE3, have been faster in RAID than the non-REs, by some kinds of firmware tweaks, but the difference in density and cost should make up for it. There are differences between series in performance, but at the same form factor, platter density, and rotational speed, the differences are too small to worry about.

When HDD platters increase in aerial density, the HDD makers have to make new software, with some new hardware. So, they make new software on a new controller, with new flash chips, new RAM, etc., so even improvements that aren't directly due to higher data density, come along with higher data density (FI, substantially improved performance with mid-to-high queue depths, and making use of larger DRAM caches).

So, the more data is on the platter, the faster the drive will be. Then, the faster it spins, the faster it will be. The differences between all the 7200 RPM 1TB/platter drives is not large, and 5400 RPM 1TB/platter drives can meet or beat 500GB/platter and some 667GB/platter 7200 RM drives, too.

The rest is basically marketing, and some feature changes (the Reds and Greens are made lower vibration, FI, which helps keep noise down--doesn't matter in a data center, but does in a small business NAS box). None of the claims if higher reliability, or better error rates, etc., will actually pan out (the reality is that the desktop drives are much better than their specs, while the enterprise drives are closer to theirs). That stuff is all fluff by marketing people.

So, basically, you want the regular 7200 RPM Blue, or maybe a Black (for the warranty only, if not much more expensive), for a fast sequential speed RAID 0, that needs to be bigger than you can afford in terms of flash.