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Seagate Has Shipped Over 10 Million Storage HHDD's

The HHDD's continue to evolve from initially accelerating reads to now being capable of speeding up write operations

Seagate Has Shipped Over 10 Million Storage HHDD's, Is That A Lot?
By Greg Schulz

Recently Seagate made an announcement that they have shipped over 10 million Hybrid Hard Disk Drives (HHDD) also known as Solid State Hybrid Drives (SSHD) over that past few years. Disclosure Seagate has been a StorageIO client.

I know where some of those desktop class HHDD's including Momentus XTs ended up as I bought some of the 500GB and 750GB models via Amazon and have them in various systems. Likewise I have installed in VMware servers the newer generation of enterprise class SSHD's which Seagate now refers to as Turbo models as companions to my older HHDD's.

Seagate HHDD

What is a HHDD or SSHD?

The HHDD's continue to evolve from initially accelerating reads to now being capable of speeding up write operations across different families (desktop/mobile, workstation and enterprise). What makes a HHDD or SSHD is that as their name implies, they are a hybrid combing a traditional spinning magnetic Hard Disk Drive (HDD) along with flash SSD storage. The flash persistent memory is in addition to the DRAM or non-persistent memory typically found on HDDs used as a cache buffer. These HHDDs or SSHDs are self-contained in that the flash are built-in to the actual drive as part of its internal electronics circuit board (controller). This means that the drives should be transparent to the operating systems or hypervisors on servers or storage controllers without need for special adapters, controller cards or drivers. In addition, there is no extra software needed to automated tiering or movement between the flash on the HHDD or SSHD and its internal HDD, its all self-contained managed by the drives firmware (e.g. software).

Some SSHD and HHDD industry perspectives

Jim Handy over at Objective Analysis has this interesting post discussing Hybrid Drives Not Catching On. The following is an excerpt from Jim's post.

Why were our expectations higher?

There were a few reasons: The hybrid drive can be viewed as an evolution of the DRAM cache already incorporated into nearly all HDDs today.

  • Replacing or augmenting an expensive DRAM cache with a slower, cheaper NAND cache makes a lot of sense.
  • An SSHD performs much better than a standard HDD at a lower price than an SSD. In fact, an SSD of the same capacity as today’s average HDD would cost about an order of magnitude more than the HDD. The beauty of an SSHD is that it provides near-SSD performance at a near-HDD price. This could have been a very compelling sales proposition had it been promoted in a way that was understood and embraced by end users.
  • Some expected for Seagate to include this technology into all HDDs and not to try to continue using it as a differentiator between different Seagate product lines. The company could have taken either of two approaches: To use hybrid technology to break apart two product lines – standard HDDs and higher-margin hybrid HDDs, or to merge hybrid technology into all Seagate HDDs to differentiate Seagate HDDs from competitors’ products, allowing Seagate to take slightly higher margins on all HDDs. Seagate chose the first path.
The net result is shipments of 10 million units since its 2010 introduction, for an average of 2.5 million per year, out of a total annual HDD shipments of around 500 million units, or one half of one percent.

Continue reading more of Jim's post here.

 

In his post, Jim raises some good points including that HHDD's and SSHD's are still a fraction of the overall HDD's shipped on an annual basis. However IMHO the annual growth rate has not been a flat average of 2.5 million, rather starting at a lower rate and then increasing year over year. For example Seagate issued a press release back in summer 2011 that they had shipped a million HHDD's a year after their release. Also keep in mind that those HHDD's were focused on desktop workstations and in particular, at Gamers among others.

The early HHDD's such as the Momentus XTs that I was using starting in June 2010 only had read acceleration which was better than HDD's, however did not help out on writes. Over the past couple of years there have been enhancements to the HHDD's including the newer generation also known as SSHD's or Turbo drives as Seagate now calls them. These newer drives include write acceleration as well as with models for mobile/laptop, workstation and enterprise class including higher-performance and high-capacity versions. Thus my estimates or analysis has the growth on an accelerating curve vs. linear growth rate (e.g. average of 2.5 million units per year).

Units shipped per year Running total units shipped
2010-2011 1.0 Million 1.0 Million
2011-2012 1.25 Million (est.) 2.25 Million (est.)
2012-2013 2.75 Million (est.) 5.0 Million (est.)
2013-2014 5.0 Million (est) 10.0 Million

StorageIO estimates on HHDD/SSHD units shipped based on Seagate announcements

estimated hhdd and sshd shipments

However IMHO there is more to the story beyond numbers of HHDD/SSHD shipped or if they are accelerating in deployment or growing at an average rate. Some of those perspectives are in my comments over on Jim Handy's site with an excerpt below.

In talking with IT professionals (e.g. what the vendors/industry calls users/customers) they are generally not aware that these devices exist, or if they are aware of them, they are only aware of what was available in the past (e.g. the consumer class read optimized versions). I do talk with some who are aware of the newer generation devices however their comments are usually tied to lack of system integrator (SI) or vendor/OEM support, or sole source. Also there was a focus on promoting the HHDD's to “gamers” or other power users as opposed to broader marketing efforts. Also most of these IT people are not aware of the newer generation of SSHD or what Seagate is now calling “Turbo” drives.

When talking with VAR's, there is a similar reaction which is discussion about lack of support for HHDD's or SSHD's from the SI/vendor OEMs, or single source supply concerns. Also a common reaction is lack of awareness around current generation of SSHD's (e.g. those that do write optimization, as well as enterprise class versions).

When talking with vendors/OEMs, there is a general lack of awareness of the newer enterprise class SSHD's/HHDD's that do write acceleration, sometimes there is concern of how this would disrupt their “hybrid” SSD + HDD or tiering marketing stories/strategies, as well as comments about single source suppliers. Have also heard comments to the effect of concerns about how long or committed are the drive manufactures going to be focused on SSHD/HHDD, or is this just a gap filler for now. Not surprisingly when I talk with industry pundits, influencers, amplifiers (e.g. analyst, media, consultants, blogalysts) there is a reflection of all the above which is lack of awareness of what is available (not to mention lack of experience) vs. repeating what has been heard or read about in the past.

IMHO while there are some technology hurdles, the biggest issue and challenge is that of some basic marketing and business development to generate awareness with the industry (e.g. pundits), vendors/OEMs, VAR's, and IT customers, that is of course assuming SSHD/HHDD are here to stay and not just a passing fad…

What about SSHD and HHDD performance on reads and writes?

What about the performance of today's HHDD's and SSHD's, particular those that can accelerate writes as well as reads?

SSHD and HHDD read / write performance exchange
Enterprise Turbo SSHD read and write performance (Exchange Email)

What about the performance of today's HHDD's and SSHD's, particular those that can accelerate writes as well as reads?

SSHD and HHDD performance TPC-B
Enterprise Turbo SSHD read and write performance (TPC-B database)

SSHD and HHDD performance TPC-E
Enterprise Turbo SSHD read and write performance (TPC-E database)

Additional details and information about HHDD/SSHD or as Seagate now refers to them Turbo drives can be found in two StorageIO Industry Trends Perspective White Papers (located here and another here).

Where to learn more

Refer to the following links to learn more about HHDD and SSHD devices.
StorageIO Momentus Hybrid Hard Disk Drive (HHDD) Moments
Enterprise SSHD and Flash SSD Part of an Enterprise Tiered Storage Strategy
Part II: How many IOPS can a HDD, HHDD or SSD do with VMware?
2011 Summer momentus hybrid hard disk drive (HHDD) moment
More Storage IO momentus HHDD and SSD moments part I
More Storage IO momentus HHDD and SSD moments part II
New Seagate Momentus XT Hybrid drive (SSD and HDD)
Another StorageIO Hybrid Momentus Moment
SSD past, present and future with Jim Handy
Part II: How many IOPS can a HDD, HHDD or SSD do with VMware?

Closing comments and perspectives

I continue to be bullish on hybrid storage solutions from cloud, to storage systems as well as hybrid-storage devices. However like many technology just because something makes sense or is interesting does not mean its a near-term or long-term winner. My main concern with SSHD and HHDD is if the manufactures such as Seagate and WD are serious about making them a standard feature in all drives, or simply as a near-term stop-gap solution.

What's your take or experience with using HHDD and/or SSHDs?

Ok, nuff said (for now)

Cheers
Gs

Greg Schulz - Author Cloud and Virtual Data Storage Networking (CRC Press),

The Green and Virtual Data Center (CRC Press) and Resilient Storage Networks (Elsevier)
twitter @storageio

All Comments, (C) and (TM) belong to their owners/posters,
Other content (C) Copyright 2006-2014 StorageIO All Rights Reserved

More Stories By Greg Schulz

Greg Schulz is founder of the Server and StorageIO (StorageIO) Group, an IT industry analyst and consultancy firm. Greg has worked with various server operating systems along with storage and networking software tools, hardware and services. Greg has worked as a programmer, systems administrator, disaster recovery consultant, and storage and capacity planner for various IT organizations. He has worked for various vendors before joining an industry analyst firm and later forming StorageIO.

In addition to his analyst and consulting research duties, Schulz has published over a thousand articles, tips, reports and white papers and is a sought after popular speaker at events around the world. Greg is also author of the books Resilient Storage Network (Elsevier) and The Green and Virtual Data Center (CRC). His blog is at www.storageioblog.com and he can also be found on twitter @storageio.

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