IDC 4Q12 Worldwide External Disk Storage System Factory Revenue, (Revenues are in US Millions)
| Vendor | 4Q12 Revenue | 4Q12 Market Share | 4Q11 Revenue | 4Q11 Market Share | 4Q12/4Q11 Revenue Growth |
| 1.EMC | $2,071 | 30.7% | $1,927 | 29.3% | 7.5% |
| 2.IBM | $1,009 | 15.0% | $996 | 15.1% | 1.3% |
| 3.NetApp | $780 | 11.6% | $734 | 11.1% | 6.3% |
| T4.HP | $626 | 9.3% | $676 | 10.3% | -7.4% |
| T4.Hitachi | $590 | 8.8% | $600 | 9.1% | -1.7% |
| Others | $1,660 | 24.6% | $1,651 | 25.1% | 0.5% |
| All Vendors | $6,736 | 100% | $6,584 | 100% | 2.3% |
整體的開放網路磁碟儲存市場（NAS、以及 Open/iSCSI SAN）成長 2.6%，銷售額達到美金 57 億，EMC 以市佔率 34.2% 繼續維持市場第一的位置，NetApp 則以 13.7% 名列第二；在 Open SAN 的市場則僅僅只有成長 0.3%，EMC 與 IBM 為市佔率前二名，分別為 28.7% 與 18.0%，而 HP 與 Hitachi 則並列第三，市佔率分別為 11.9% 和 11.4%；NAS 市場成長 8.8%，由 EMC 的 48.2% 與 NetApp 的 28.3% 的市佔率領先。
IDC 今年並沒有公開發表去 (2012) 年全球外接式磁碟儲存系統市場的數字，下表是本站依據先前 IDC 所公佈 2012 年各季的數字加總，並且參考前 (2011) 年的數字製成。2012 年全球外接式磁碟儲存系統市場的年成長率為 4.9%，低於前二年的 10.6% 與 18.3%，整體的銷售額達到 247 億美元。2012 年前五大外接式磁碟儲存製造商依序分別為 EMC、IBM、NetApp、HP、與 Hitachi，與前年的排名相同。
Worldwide 2012 External Disk Storage System Factory Revenue, (Revenues are in US Millions)
| Vendor | 2012 Revenue | 2012 Market Share | 2011 Revenue | 2011 Market Share | 2012/2011 Revenue Growth |
| 1.EMC | $7,419 | 30.1% | $6,694 | 28.5% | 10.8% |
| 2.IBM | $3,155 | 12.8% | $3,183 | 13.5% | -0.8% |
| 3.NetApp | $3,054 | 12.3% | $2,911 | 12.4% | 4.9% |
| 4.HP | $2,452 | 9.9% | $2,524 | 10.7% | -2.8% |
| 5.Hitachi | $2,208 | 8.9% | $2,068 | 8.8% | 6.7% |
| Others | $6,363 | 26.0% | $6,116 | 26.0% | 4.0% |
| All Vendors | $24,651 | 100% | $23,495 | 100% | 4.9% |
全球前三大的「純」儲存系統製造商全部都進入前五名，EMC 與 NetApp 仍然是兩大巨頭，而 Hitachi (HDS) 則排名第五。再進一步看這五家廠商的年成長率，僅有 EMC 保有 10.8% 兩位數字的年成長率，而系統廠商包括 IBM 與 HP，去年在儲存市場上則是呈現衰退的。
另一家市調機構 Gartner 有發佈去年的全球外接式磁碟儲存系統市場銷售數字，市佔率的數字與排名大致上與 IDC 報告的數字接近。Gartner 預估的全球外接式磁碟儲存系統市場年成長率為 4.9%，與 IDC 的數字相同，值得注意的則是在系統廠商中只有 Dell 一家的儲存銷售年成長率是正的，為 1.9%，其餘則均為負成長的。
Gartner Worldwide External Controller-Based Disk Storage Vendor Revenue Estimates for 2012 (Millions of U.S. Dollars)
| Company | 2012 Revenue | 2012 Market Share | 2011 Revenue | 2011 Market Share | 2012/2011 Change |
| EMC | $7,448.7 | 33.4% | $6,728.7 | 31.7% | 10.7% |
| IBM | $2,963.9 | 13.3% | $3,007.0 | 14.2% | -1.4% |
| NetApp | $2,508.3 | 11.3% | $2,450.6 | 11.5% | 2.4% |
| Hitachi/HDS | $2,129.7 | 9.6% | $1,989.5 | 9.4% | 7.0% |
| HP | $1,962.5 | 8.8% | $2,071.1 | 9.8% | -5.2% |
| Dell | $1,609.5 | 7.2% | $1,580.3 | 7.4% | 1.9% |
| Fujitsu | $457.7 | 2.1% | $472.5 | 2.2% | -3.1% |
| Oracle | $319.7 | 1.4% | $359.1 | 1.7% | -11.0% |
| Others | $2,878.4 | 12.9% | $2,574.3 | 12.1% | 11.8% |
| All Vendors | $22,278.5 | 100% | $21,233.0 | 100% | 4.9% |
以下這個表則是來自於 StorageNewletter.com 的統計數據，2012 年的前 12 大儲存廠商。
Top 10 in Storage Sales in $ million in FY12
| Vendors | 2011 Revenue | 2012 Revenue | Y/Y growth |
| EMC | $14,755 | $15,589 | 6% |
| Seagate | $10,971 | $14,939 | 36% |
| WD | $9,526 | $12,478 | 31% |
| Micron | $8,788 | $8,234 | -6% |
| IBM *&** | $6,787 | $6,500 | -4% |
| NetApp | $5,123 | $6,233 | 22% |
| SanDisk | $5,662 | $5,053 | -3.1% |
| HDS+Japan | $3,864 | $4,443 | 15% |
| HP * | $4,056 | $3,815 | -6% |
| LSI | $2,044 | $2,506 | 23% |
| Symantec * | $2,307 | $2,412 | 5% |
| Dell * | $2,295 | $1,943 | -15% |
| Total | $76,178 | $84,145 | 10% |
** estimate
