Cheap Storage

Backblaze Storage Pod - DIY:
http://blog.backblaze.com/category/storage-pod/
http://www.slideshare.net/glebbudman/petabytes-on-a-budget

Storage Costs
The table below compares the total cost of different Backblaze Storage Pod configurations.

Description	Pod 2.0	Pod 3.0	Pod 3.0
Drive size	3 TB	3 TB	4 TB
Our cost per drive	$120	$125	$195
Number of drives	45	45	45
Chassis cost	$1,984.00	$1,942.59	$1,942.59
Drive cost	$5,400.00	$5,625.00	$8,775.00
Total cost	$7,384.00	$7,567.59	$10,717.59
Total size in TB	135	135	180
Cost per TB	$54.70	$56.06	$59.54
Cost per GB	$0.0547	$0.0561	$0.0595

This Synology RS2212RP+ NAS looks like a bargain for backup/archiving:
http://www.simplynas.com/synology-rs2212rp-plus-hitachi-deskstar-4tbx10.aspx
http://www.synology.com/products/product.php?product_name=RS2212%2B


Cost per TB $120.85

Even includes support for backup to Amazon Glacier (1c/GB/month):
http://aws.amazon.com/glacier/
Glacier cost per TB $360.00 (assuming no other costs and used for 3 years)


HP P2000: G3, 2 x 10GbE iSCSI SFP+ Controllers, 24 x 900GB 10K SAS HDD - $25,700:
http://www8.hp.com/au/en/products/disk-storage/product-detail.html?oid=4118559#!tab=features

Cost per TB $1189 (initial including controllers), subsequent cost per TB $632 (expansion)


Dell MD3260 240TB (60 x 4TB 7.2K SAS HDD) - $63,514:

http://zorangagic.blogspot.com.au/2013/10/dell-hpc-nfs-storage-solution-high.html
Cost per TB $264 (initial including controllers), subsequent cost per TB $212 (expansion)


Update 6/6/2013:
Other NAS alternatives such as QNAP TS-870U-RP offer 10Gb networking, this has 540.1MB/sec write performance...fast and low cost for backup:
http://benchmarkreviews.com/index.php?option=com_content&task=view&id=1213&Itemid=70&limit=1&limitstart=14