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Velociraptor on sale...worth it? - Page 6

post #51 of 64
Quote:
Originally Posted by ryboto View Post

Made an offer on the white label drive, if that fails, the guy selling the enterprise drive said WD said it's in warranty for 4 more years.
sounds like a win / win...
post #52 of 64
Quote:
Originally Posted by Oubadah View Post

I didn't realise these things had become so cheap. I'm almost tempted to abandon my planned SSD purchase for my main rig and get VRs instead. It's just the noise and heat...

I can't personally speak on heat because I have all four of my drives (two Samsung 840 Pro 128GB and the two WD VR 1TB) mounted at the front of my case (SSDs on top and VRs on the bottom) right in front of a 120mm fan. The VR don't have any temperature sensors built in as far as I know but my Samsungs do and the temperature for my Samsungs is always around 20C. But providing you have airflow going through the drives they will be fine and I seriously doubt that these drives will produce enough heat to affect your system temperatures.

As for the noise, in my system they are virtually quiet but this will depend on how the drive mounts in your case, then you might hear them seek. My brother has one of the new WD VR 250GB mounted in his NZXT Guardian, it uses these plastic rails with embedded pins that just rest on each side of the drive and then you slide the drive in a rail which holds the plastic rails and the drive as one unit. With this mounting system, I can hear the drive seek under load only because the vibration of the mounting system is amplified by the case making them seem louder than what they really are. But for the record, I have no doubt that the design of the mounting system in the Guardian would cause any mechanical drive to sound louder than what it is. In my case (NZXT Tempest Elite) the drive bays each have one piece removable plastic tray which for one already removes the chances of having two rails to introduce possible vibration noise and two, the pins that hold the drive on the tray are also isolated by a rubber mount that rests in grooves on the plastic tray (see picture below). With that mounting system my drives are virtually quiet (you can hear them faintly sitting next to the tower when its really quiet at night) when under load and seeking. In contrast my WD 1TB backup drive (external USB 2.0) sitting on my desk is noticeably louder when seeking so the VR don't bother me whatsoever.



Quote:
Originally Posted by srsparky32 View Post

this read was really frigging interesting mostly because i'm under the influence of a certain plant wink.gif
haha thanks! thumb.gif
Quote:
Originally Posted by malmental View Post

story of my life... wink.gif
You are not alone, it is also the story of countless others... tongue.gif
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post #53 of 64
I can see two versions of the 500 and 250GB VR:

WD5000BHTZ
WD5000HHTZ

WD2500BHTZ
WD2500HHTZ

Is one without the icepack? Which one?

I can only find one version of the 1TB drive:

WD1000DHTZ
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post #54 of 64
Quote:
Originally Posted by Oubadah View Post

I can see two versions of the 500 and 250GB VR:

WD5000BHTZ
WD5000HHTZ

WD2500BHTZ
WD2500HHTZ

Is one without the icepack? Which one?

I can only find one version of the 1TB drive:

WD1000DHTZ

You are correct, the DHTZ and HHTZ models come with the Ice Pack mounting frame. The CHTZ and BHTZ models come without the Ice Pack mounting frame.

So with the Ice Pack frame you have:
WD1000DHTZ SATA 6 Gb/s 3.5 Inch 10,000 1 TB 64 MB
WD5000HHTZ SATA 6 Gb/s 3.5 Inch 10,000 500 GB 64 MB
WD2500HHTZ SATA 6 Gb/s 3.5 Inch 10,000 250 GB 64 MB

Without the Ice Pack mounting frame you have:
WD1000CHTZ SATA 6 Gb/s 2.5 Inch 10,000 1 TB 64 MB
WD5000BHTZ SATA 6 Gb/s 2.5 Inch 10,000 500 GB 64 MB
WD2500BHTZ SATA 6 Gb/s 2.5 Inch 10,000 250 GB 64 MB

Source:
http://www.wdc.com/en/products/products.aspx?id=20
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-701284.pdf
http://www.wdc.com/wdproducts/library/SpecSheet/ENG/2879-701282.pdf
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post #55 of 64
Thanks.
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post #56 of 64
Best bang for the buck is SSD caching a RAID10 volume. Get 4 disks any size and make a single RAID10 volume, this offers both redundancy and performance. Then make your system boot UEFI because the SSD cache can only cache a single volume, then cache the entire thing with a 64gb OCZ Vertex4. Walla, Storage and Performance! thumb.gif

(of course you need a system that supports SSD caching to do this)
Edited by Undermoose - 3/16/13 at 4:30pm
post #57 of 64
Quote:
Originally Posted by Undermoose View Post

Best bang for the buck is SSD caching a RAID10 volume. Get 4 disks any size and make a single RAID10 volume, this offers both redundancy and performance. Then make your system boot UEFI because the SSD cache can only cache a single volume, then cache the entire thing with a 64gb OCZ Vertex4. Walla, Storage and Performance! thumb.gif

(of course you need a system that supports SSD caching to do this)
I guess you missed the part about case size and HDD mounting abilities huh.? rolleyes.gif
post #58 of 64
SSD caching doesn't require a RAID array to boost performance, and I would go so far as to say that for probably 99% of things you would not see any difference between a single drive and a RAID array when both are being cached to an SSD. Only when you have files that are too large to fit in the cache or during extremelywrite iintensive operations would the array win.
   
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post #59 of 64
Quote:
Originally Posted by nleksan View Post

SSD caching doesn't require a RAID array to boost performance, and I would go so far as to say that for probably 99% of things you would not see any difference between a single drive and a RAID array when both are being cached to an SSD. Only when you have files that are too large to fit in the cache or during extremelywrite iintensive operations would the array win.

You do need raid and UEFI booting if you plan to boot from the largest single volume you can create, and then SSD cache it. Obviously you're after capacity if you're using physical disks, and considering a SSD cache because you want this tech to boost performance on that data, so raid10 makes sense for performance & redundancy of a large volume. Who wants to lose terabytes of data due to a broken raid0? raise your hand! Let's here it for raid10!, but yes it's expensive performance storage, you lose 50 percent of your disks in the array to redundancy and the minimum array size is 4 disks...

You will most certainly see a performance increase raid0/raid10 vs a single drive, whether you cache it or not. I just like Raid10 because it offers the best of both worlds, performance and redundancy, cache whatever you like. Go buy a single 4TB drive and UEFI boot it so you can cache the entire thing, but you'd be better off with a raid0 or raid10 made from 4TB drives vs a single drive if you want to maximize performance.

As a note: I believe you will see less "relative" benefit caching raid0/raid10 than caching a single disk or raid1/raid5. For example, if you Google it, there is a write up where they show a cache offering less relative benefit on a VR vs a Black Caviar drive, but absolute speed is absolute speed. Caching a slow disk setup offers a great boost, but you will have an underlying slow disk when the cache needs to go read or write from it.

So from my perspective, if I'm building a single giant volume I don't want the potential of failure from a broken raid0, and I don't want the slowness of a single disk, mirror, or raid5. So I'm going to build redundancy with performance using a raid10, then cache it, and I've got the best hybrid SSD/spinning disk option going.
Edited by Undermoose - 3/17/13 at 7:25pm
post #60 of 64
Quote:
Originally Posted by Undermoose View Post

You do need raid and UEFI booting if you plan to boot from the largest single volume you can create, and then SSD cache it.
But the OP however never asked for a large RAID boot drive setup...

Quote:
Originally Posted by Undermoose View Post

...raid10 makes sense for performance & redundancy of a large volume. Who wants to lose terabytes of data due to a broken raid0? raise your hand! Let's here it for raid10!, but yes it's expensive performance storage, you lose 50 percent of your disks in the array to redundancy and the minimum array size is 4 disks...

You will most certainly see a performance increase raid0/raid10 vs a single drive, whether you cache it or not. I just like Raid10 because it offers the best of both worlds, performance and redundancy, cache whatever you like. Go buy a single 4TB drive and UEFI boot it so you can cache the entire thing, but you'd be better off with a raid0 or raid10 made from 4TB drives vs a single drive if you want to maximize performance. .

No doubt as it is the best RAID option for maximum performance and redundancy. However few home users will sacrifice 50% of their disk space simply for the redundancy a RAID10 would bring, it simply is not cost effective, especially if you already backup your data. If redundancy is a must and you will be SSD caching then a RAID 5 for most home users is more cost effective but in any case its irrelevant for the OP as he stated that he only had space for one more disk...

Quote:
Originally Posted by Undermoose View Post

So from my perspective, if I'm building a single giant volume I don't want the potential of failure from a broken raid0, and I don't want the slowness of a single disk, mirror, or raid5. So I'm going to build redundancy with performance using a raid10, then cache it, and I've got the best hybrid SSD/spinning disk option going.

Don't generalize that a RAID 5 array is slow because most of this generalization comes from the business market segment where depending on workload the read and write performance is critical and that's where the RAID 5 fails due to the parity. The performance of a RAID 5 array can vary greatly depending on workloads and the quality of hardware (RAID controller and drives). In general a RAID 5 array will give you fast reads almost comparable to the RAID 10 but will lack severely on the writes compared to the RAID 10. But in this scenario for a home user playing games (reading from the drive 99% of the time), the RAID 5 will provide great performance and redundancy without sacrificing 50% of the disk space. The writes are another story and will only impact the user when installing games, copying files, etc... Again this is out of context for the thread but I wanted to clear up the misinformation regarding the RAID 5 generalization that it is "slow".
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Overclock.net › Forums › Components › Hard Drives & Storage › Velociraptor on sale...worth it?