$3,000 per TB
SAN will lower my costs. Myth #1: Storage is Getting Cheaper. While it is true that disk storage per Terabyte has been declining by 35% to 40% per year, the average amount of storage installed has increased by about 45% annually during the same period. In fact, storage is the fastest-growing capital cost within the data center Without question, the best price per terabyte anywhere in the technology industry is the home PC. You can get a Dell® PC at about $400 and it comes with a terabyte disk drive. WOW! I found one PC for $319 per TB! Teradata, Oracle, IBM, and all the other vendors are headed for the scrap heap of history with those kinds of prices. Pricing out an R720XD on the Dell website, I found a server with 128GB of memory and twelve 1.2TB disks comes in at $15,276. That’s $1060 per terabyte. Cool. In the mid-tier, the VA is targeting a cost of $20 per GB for 50 TB of storage that meets 250 IOPS on SPC-1 and 25 MBPS on SPC-2. For its premium tier, the VA intends to keep the costs under $125 per GB per month for 50 TB of storage that offers 500 IOPS on SPC-1 and 25 MBPS on SPC-2. First, current estimates of the total ﬁbit preservationﬂ cost of storage are ~$1500/TB/yr for SATA disk and $500/TB/yr for enterprise-class tape archives; thus the current difference between tape and disk costs is a factor of about three.  There is a saying in the storage industry that capacity is free and performance costs. This is true to an extent because, for example, in raw capacity terms, the price (per TB) of a 15,000rpm high-performance drive can be 20x to 30x more than a SATA 7,200rpm device. That’s an incredible £0.025 per GB. But while raw drive prices are measured in pennies per gigabyte, the actual cost of storage for the enterprise is much higher, and more difficult to calculate. There are many factors that need to be considered, including media type, platform hardware and software costs. The perceived cost of a terabyte of enterprise storage is about 1.5 to 2.5 cents/MB ($150,000 to $250,000/TB). Depending on the specifics and various bells and whistles, the cost could shoot up to $800,000/TB, but even that price is significantly below the $1 million-plus cost of just a few years ago. That works out to be $7/GB or $7,000/TB and the company will have products that threaten to break the $1,000/TB barrier. And our cost includes no charge for support for three years, he adds. At that price, you can just toss it out after three years and buy new storage, which will likely cost even less. A 10-pack of M-DSIC media costs $29.99, which equates to a per-gigabyte cost of $0.638. Tape. Another format that's been around for decades is tape, and as with hard disks, there are interesting recent developments that should keep it relevant in the cloud computing era.  One common way to express cost of storage is to produce a cost per gigabyte or terabyte figure. For example, if you purchased a SAN with 13 TB of RAW capacity for $39,000, you paid $3,000 per TB. For the cost conscious, that's not a bad metric, but performance shouldn't be ignored, lest a low price result in an unacceptable solution. Let's start by creating a cost/TB matrix so we can get a look at what this storage is costing us in terms of raw TB. I'll assume that we'll fill up a 12 bay storage array with disks, so we'll compare one chassis full of 7200RPM SATA disks to another chassis full of 15K SAS disks and so on. With discount computer stores selling disk drives for a dollar per gigabyte, how can enterprise storage systems cost many times that amount? Fry's electronics, for example, recently advertised the Buffalo TeraStation at $1699 for 2 TB of NAS. That's $1.17 per GB. For its premium tier, the VA intends to keep the costs under $125 per GB per month for 50 TB of storage that offers 500 IOPS on SPC-1 and 25 MBPS on SPC-2. A consumer can get a 4TB capacity drive for less than £100. That’s an incredible £0.025 per GB. But while raw drive prices are measured in pennies per gigabyte, the actual cost of storage for the enterprise is much higher, and more difficult to calculate. There are many factors that need to be considered, including media type, platform hardware and software costs.
http://www.ictanalytics.com/archives/306 http://blogs.teradata.com/data-points/how-illy-is-cost-per-terabyte/ http://www.enterprisestorageforum.com/outsourcing/features/article.php/3656346/What-Storage-Costs.htm http://users.sdsc.edu/~mcdonald/content/papers/dt_cost.pdf http://www.computerweekly.com/feature/GB-vs-IOPS-and-how-to-compare-enterprise-storage-pricing http://searchstorage.techtarget.com/magazineContent/Are-you-paying-too-much-for-storage http://www.zdnet.com/article/storage-in-2014-an-overview/ http://www.techrepublic.com/blog/the-enterprise-cloud/storage-array-capacity-performance-vs-cost/ http://www.enterprisestorageforum.com/outsourcing/features/article.php/3656346/What-Storage-Costs.htm http://www.computerweekly.com/feature/GB-vs-IOPS-and-how-to-compare-enterprise-storage-pricing
how much should san storage cost per tb