http://en.wikipedia.org/wiki/Hard_drive#Capacity Currently the biggest available 3.5" SATA disks are 4TB according to Wikipedia. Has anyone seen announcements of bigger hard drives? One of my clients has a zpool of 3TB disks that is at 79% capacity so it's time to start thinking of adding more capacity. Upgrading from 4*3TB to 5*4TB would be barely worth doing. But upgrading from 4*3TB to 5*5TB would more than double the capacity and thus be a better option than buying an external case for adding more disks. So I'm wondering whether 5TB disks will go on sale before my client runs out of space. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/
On 2013-10-30 12:39, Russell Coker wrote:
http://en.wikipedia.org/wiki/Hard_drive#Capacity
Currently the biggest available 3.5" SATA disks are 4TB according to Wikipedia. Has anyone seen announcements of bigger hard drives?
One of my clients has a zpool of 3TB disks that is at 79% capacity so it's time to start thinking of adding more capacity. Upgrading from 4*3TB to 5*4TB would be barely worth doing. But upgrading from 4*3TB to 5*5TB would more than double the capacity and thus be a better option than buying an external case for adding more disks.
So I'm wondering whether 5TB disks will go on sale before my client runs out of space.
Sorry I have only seen the 4TBs. Seagate did announce in August that they are expecting to launch a 4 platter 5TB drive in 2014, but as to when next year is anybody's guess. Here is the press release from Seagate http://www.seagate.com/au/en/tech-insights/breaking-areal-density-barriers-w...
On Wed, 30 Oct 2013 12:53:41 Christopher M. Bailey wrote:
Sorry I have only seen the 4TBs. Seagate did announce in August that they are expecting to launch a 4 platter 5TB drive in 2014, but as to when next year is anybody's guess. Here is the press release from Seagate http://www.seagate.com/au/en/tech-insights/breaking-areal-density-barriers-w ith-seagate-smr-master-ti/
That's an interesting article. A capacity improvement of 4TB to 5TB is rather disappointing though, I would have hoped for something more with such a change in technology. Also from the rough description given it seems that the probability of a write going wrong and corrupting unrelated data is going to increase a lot. ZFS with regular scrubbing should be able to deal with such things but it's still a concern. It makes me wonder whether I should move to RAID-Z2 on more systems, in which case 5*5TB would give 15TB of usable capacity in RAID-Z2 as opposed to 5*4TB in RAIZ-Z1 giving 16TB usable capacity. It would be nice if someone started manufacturing 5.25" hard drives again. With such a size it should be possible to get 10TB or more on a drive. It would be slow but I've got clients who need such mass storage and don't really care about performance. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/
On 30 October 2013 12:39, Russell Coker <russell@coker.com.au> wrote:
One of my clients has a zpool of 3TB disks that is at 79% capacity so it's time to start thinking of adding more capacity. Upgrading from 4*3TB to 5*4TB would be barely worth doing. But upgrading from 4*3TB to 5*5TB would more than double the capacity and thus be a better option than buying an external case for adding more disks.
I'm certainly overlooking an unspecified constraint; but just add more disks, and another controller/enclosure if necessary. ~ Joel
On 30/10/2013 12:39 PM, Russell Coker wrote:
So I'm wondering whether 5TB disks will go on sale before my client runs out of space.
This, but again, not yet.... Startup's 'RRAM' Tech Promises 1TB Memory for Mobile Devices http://www.pcmag.com/article2/0,2817,2422734,00.asp The key benefits users will get from Crossbar's RRAM technology and the capability for "3D-stacking" of multiple chips in a System-on-a-Chip (SoC) package, per the company, are: Highest Capacity: Up to 1TB of storage on a single chip; multiple terabytes with 3D stacking Lowest Power: Extends Battery Life to Weeks, Months, or Years Highest Performance: 20x faster write than NAND Easiest SoC Integration: Simple stacking on logic in standard CMOS at most advanced nodes Most Reliable: 10x the endurance of NAND, approaching DRAM reliability You can fit a lot of postage stamps inside a 3.5" casing... ;) Cheers A.
HGST has come up with a way to pack more punch into data centre storage by stuffing its hard-disk drives with helium. The Western Digital subsidiary has started shipping the 6TB Ultrastar He6, a high-capacity drive that it claimed is considerably faster, cooler and more power-efficient than normal HDDs. Unlike standard HDDs, which contain five platters rotating in filtered air, the Ultrastar He6 uses helium, which is less resistant, lighter and cooler than air. The reduced friction and temperature mean disks can spin for longer on less power – allowing HGST to pack in seven platters and increase storage to 6TB from the usual 4TB. Since the drives shouldn't experience the same wear and tear as standard HDDs, HGST claimed its devices will last longer and therefore cost less in the long run, although the company hasn't revealed prices yet. More info here: http://www.pcauthority.com.au/News/363028,helium-filled-hdds-boost-storage-t...
participants (4)
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Andrew McGlashan -
Christopher M. Bailey -
Joel W Shea -
Russell Coker