United States
Site Map Contacts Hitachi Global Community
Data Storage Blogs - Hitachi Data Systems Hitachi - Inspire the Next

Data Center Advisors - IT and Storage Advice from HDS

Home > Corporate > HDS Blogs > Capacity Efficiency

Capacity Efficiency

What is a good target for capacity utilization?

The other day while talking to a customer about capacity efficiency he asked, what should be a reasonable utilization target? With thin provisioning, he can eliminate the waste of over allocation which used to cause his open systems’ capacity to [...]

Continue reading "What is a good target for capacity utilization?" »

Improving Storage Densities When Areal Density Slows Down

A recent paper in the IEEE Transactions on Magnetics Vol 48 May 2012 shows that the roadmap for areal density increases in magnetic hard disk drives (HDD) has slowed down to 20% per year. Areal density is measured in bits [...]

Continue reading "Improving Storage Densities When Areal Density Slows Down" »

JBOD in Clustered Computing

I enjoyed reading Hu’s blog on JBOD and the tight integration needed for today’s applications. In the spirit of adding on to this discussion, I tend to see patterns around JBOD usage that deserve some additional (econ) attention: When a [...]

Continue reading "JBOD in Clustered Computing" »

Storage Virtualization Can Reduce the Cost of Maintenance

This is the first in a series of blogs that discusses the impact of enterprise, controller-based virtualization and the impact to secondary costs. By secondary costs, I mean costs that are not usually and obviously measured with virtualization initiatives. In [...]

Continue reading "Storage Virtualization Can Reduce the Cost of Maintenance" »

Reclaim vs. Buy Part 4 (of 4): Looking at the Total Cost

The past 3 blogs have covered the economics behind reclamation (of disk) compared to buying new disk. My material has focus on reclamation due to storage virtualization, over provisioning (thin provisioning) and zero page reclaim. The same methods can be [...]

Continue reading "Reclaim vs. Buy Part 4 (of 4): Looking at the Total Cost" »

Reclaim vs. Buy (Part 3): Don't get upside down on your costs

This is my 3rd installment of a 4-part series on when/how it is cheaper to reclaim disk as opposed to buying new. The previous 2 entries covered the setup and calculations, now we will look at conditions when each tends [...]

Continue reading "Reclaim vs. Buy (Part 3): Don't get upside down on your costs" »

Reclaim vs. Buy Part 2 (of 4): Basic Calculations and Modeling Methods

My previous blog entry discussed the opportunity of deciding if it is cheaper to reclaim (poorly utilized) disk compared to purchasing net new disk. This blog entry will setup how to calculate a simple reclaim vs. buy analysis. Step 1 – [...]

Continue reading "Reclaim vs. Buy Part 2 (of 4): Basic Calculations and Modeling Methods" »

Reclaim vs. Buy: Part 1 (of 4)

Disk prices are rising. I hope I am not the bearer of bad news, but you have probably heard, or seen for yourself, that recent natural disaster and supply problems have caused some disk prices to rise. This is not [...]

Continue reading "Reclaim vs. Buy: Part 1 (of 4)" »

Seagate’s HAMR Reaches the 1TB Per-Square-Inch Barrier and HGST Announces 4TB Disk

In the last few weeks there have been some major announcements for magnetic storage hard disk drives. First was Seagate’s demonstration of HAMR (Heat Assisted Magnetic Recording), which surpasses the 1TB per-square-inch magnetic recording barrier. This breaks the previous recording [...]

Continue reading "Seagate’s HAMR Reaches the 1TB Per-Square-Inch Barrier and HGST Announces 4TB Disk" »

Reducing Costs or Being More Efficient?

Last Friday the markets were closed, so much of the financial media spent the day talking to analysts to get their views on the recovery, such as it is. One of the top stories in the US was around the [...]

Continue reading "Reducing Costs or Being More Efficient?" »

Storage Efficiency with Consolidation; Consolidation with Unification

Ever since we started decentralizing IT resources in the golden-era of client/server (mid-90s), we have been working to reign in the sprawl by consolidation recommendation. As soon as we consolidate, there will be another reason to sprawl (perhaps next time [...]

Continue reading "Storage Efficiency with Consolidation; Consolidation with Unification" »

Move Over Angry Birds – Hitachi Command Suite Goes iPad!

Hu: In my series on storage efficiencies, I posted on storage management efficiency. Here is another way that we have made our Hitachi Command Suite more efficient. My colleague Sean Moser provides a fresh perspective on software and some of [...]

Continue reading "Move Over Angry Birds – Hitachi Command Suite Goes iPad!" »

Storage Management Efficiency –A Unified Approach

Management efficiency is a key part of storage efficiency. The explosion of data and data types cannot be managed if we continue to take a piecemeal approach to storage management. Most data centers have a mixture of storage products from [...]

Continue reading "Storage Management Efficiency –A Unified Approach" »

Videos from on the Road…

I’m out of the office this week—and I plan on continuing my big data case study series as soon as I return—but quickly wanted to reiterate something Claus posted last week. Recently, we were able to sit down and cut [...]

Continue reading "Videos from on the Road…" »

Application Efficiencies

The choice of a storage system can have a major impact on the efficiency of an application. There are storage features that can enable applications to run faster and use less CPU and memory; they go beyond the performance features [...]

Continue reading "Application Efficiencies" »

Energy Efficiencies

Two events in 2011 are bringing greater focus on energy efficiencies. First, the Fukushima disaster, which has decreased the use of nuclear power generation around the world, has resulted in increased costs for other sources of electrical energy. Second is [...]

Continue reading "Energy Efficiencies" »

Big Data Storage Economics – Case Study #1

Last week I posted an introductory blog about big data and some work I had done a few years back in this space (before it was called big data). I have a couple of these large TCO assessments in my [...]

Continue reading "Big Data Storage Economics – Case Study #1" »

Additional Storage Performance Efficiencies for Mainframes

UPDATE: Since this post was first published, I was challenged on a performance chart that I showed. Since I did not have the details, I took this post down until I could verify the test parameters with the owner of the [...]

Continue reading "Additional Storage Performance Efficiencies for Mainframes" »

Storage Performance Efficiency

This is a continuation of my series on storage efficiencies, looking specifically at storage performance efficiencies. Here are just a few considerations. Drive Performance Efficiency While large caches in front of disk drives help to mask the performance of mechanical disks [...]

Continue reading "Storage Performance Efficiency" »

Measure Twice, Cut Once

We live in a world of measurements, metrics and comparative standards. IT may have to consider more measurable gain justifications in order to compete for limited CAPEX and OPEX dollars. I like this quote from Thomas Monson who said: “When [...]

Continue reading "Measure Twice, Cut Once" »

Action Plans in a Crisis

This is part three of a three-part blog series on strategies and tactics during an economic crisis. You can read part one here and two here. We have established the terms and parameters for an (IT) economic crisis, the general [...]

Continue reading "Action Plans in a Crisis" »

Capacity Efficiencies: Allocation vs Utilization

As noted in previous posts, capacity efficiency has two dimensions: allocation efficiency and utilization efficiency. Allocation Efficiency Allocation efficiency is what most people think of first: eliminating the waste of over-allocation. In open systems this has been a major problem [...]

Continue reading "Capacity Efficiencies: Allocation vs Utilization" »

Economic Crisis Part 2: Hoarding Cash

This is part two of a three-part blog series on strategies and tactics during an economic crisis. You can read part one here. We have already covered what makes a crisis (since your mileage and conditions will vary), so this [...]

Continue reading "Economic Crisis Part 2: Hoarding Cash" »

Storage Efficiencies Redefined

If you Google storage efficiencies, eventually you will get a Wikipedia definition, which describes storage efficiency as “the ability to store and manage data that consumes the least amount of space with little or no impact on performance, resulting in [...]

Continue reading "Storage Efficiencies Redefined" »

The Sky is Falling (Part 1)

I hope you survived the solar flare-up the other day. I did not get my usual number of cell phone calls on Tuesday, so I am blaming the sun. I am convinced that if Chicken Little is ever proven right, [...]

Continue reading "The Sky is Falling (Part 1)" »

Storage Efficiencies: You Say Tomato, I say Potato

Hu and others have recently been blogging about storage efficiencies, in terms of capacity, management, allocation, data protection and energy efficiency. I will add another dimension to this discussion, and that is the methods in which efficiencies can be measured. [...]

Continue reading "Storage Efficiencies: You Say Tomato, I say Potato" »

More to Storage Efficiency than Capacity

In response to my last blog, Jon Toigo was kind enough to post a training piece that he wrote last year, reminding us that capacity is only one part of storage efficiency. In addition to capacity allocation efficiency, which most [...]

Continue reading "More to Storage Efficiency than Capacity" »

Storage Efficiency: Switch It On III

The greatest tool for storage efficiency is storage virtualization, which enables the extension of other storage efficiency tools like tiering and thin provisioning to existing storage systems that do not have that capability. It also reduces operational costs by providing [...]

Continue reading "Storage Efficiency: Switch It On III" »

The Economics of Storage Virtualization Webinar

Virtualization in the data center is a stable and proven approach to make IT more efficient from desktops to servers and from networks to storage. Whether storage virtualization is host-based, controller-based or through an appliance, it is a core ingredient [...]

Continue reading "The Economics of Storage Virtualization Webinar" »

1/25 Webinar: Manage Rising Disk Prices with Storage Virtualization

Hu and I have blogged about rising disk prices, and how virtualization can be a key instrument to hold down costs: Buying Disks or Buying Storage Efficiencies Look Beyond the Price of HDD Supply-side Economics Storage Virtualization – A Foundation [...]

Continue reading "1/25 Webinar: Manage Rising Disk Prices with Storage Virtualization" »

A Consensus on Storage Efficiencies

Since I posted my trends for 2012, I have been looking at what other bloggers have been predicting. The most common theme is the explosion of data, and the need for storage efficiencies. Jon Toigo says that 70% of the [...]

Continue reading "A Consensus on Storage Efficiencies" »

How Much Does it Cost to Spend Money?

One of the expenses included in storage and IT economics is the cost of procurement. I discovered and documented this cost element about a year ago while working in Australia. Anyway, I believe that traditional capitalization for IT will diminish over [...]

Continue reading "How Much Does it Cost to Spend Money?" »

The Tipping Point for Hard Disk Prices?

Q1 2012 marks a major turning point in the storage industry. After 50 years of price declines in the magnetic disk industry, we are seeing what most analysts predict to be a 5% to 20% increase in disk prices due [...]

Continue reading "The Tipping Point for Hard Disk Prices?" »

Buying Disks or Buying Storage Efficiencies

At the top of my list of trends to watch in 2012 was an increased focus on storage efficiency due to economic uncertainty and hard disk supply shortages—stemming from last year’s floods in Thailand. Yesterday IDC and Gartner both reported [...]

Continue reading "Buying Disks or Buying Storage Efficiencies" »

Look Beyond the Price of HDD

You may have heard news about the devastating floods in Thailand, and now the ripple effect of increased HDD prices due to mfg and supply shortages. HDS, EMC, NetApp, and IBM have all stated temporary price increases of 5-15% for [...]

Continue reading "Look Beyond the Price of HDD" »

How Thin Provisioning Contributes to Storage Efficiency

As you may have read already, I led off my 2012 trends blog series with a post on a “Focus on increasing storage utilization.” I have talked with many customers who have seen utilization of storage assets increase from 20% [...]

Continue reading "How Thin Provisioning Contributes to Storage Efficiency" »

What is the difference between thin provisioning and dynamic provisioning

When a new idea or technology is introduced we look for ways to help people understand what it does by relating it to an existing capability. The danger in doing this is that the understanding of the new technology gets [...]

Continue reading "What is the difference between thin provisioning and dynamic provisioning" »

Hitachi Dynamic Provisioning without Thin Provisioning

Hitachi Dynamic Provisioning, HDP, is a feature of the USP V/VM which does virtualization of storage capacity in a pool of storage consisting of multiple RAID array groups. This pool of physical RAID array groups is divided up into 42 [...]

Continue reading "Hitachi Dynamic Provisioning without Thin Provisioning" »

Who took my Storage?

No matter how much storage capacity you buy it never seems to be enough. Jon Toigo did a presentation several years ago in which he described storage as being over subscribed and under utilized. He developed a chart of storage [...]

Continue reading "Who took my Storage?" »

What goes up must come down

IDC’s Worldwide Quarterly Server Tracker report of February 2007 showed that volume systems (blade servers) sales has continued to decline over the past year. IDC believes this is caused by the industry ‘s aggressive movement to simplify and optimize their [...]

Continue reading "What goes up must come down" »



page top