Storage - Hệ thống lưu trữ - Thiết bị lưu trữ - là một thiết bị máy chủ nhiều ổ cứng hoặc một thiết bị lưu trữ chuyên dụng có nhiều ổ cứng gắn trực tiếp vào máy chủ hoặc sự kết hợp giữa các máy chủ với nhau tạo thành một hệ thống phục vụ cho công việc lưu trữ, backup dữ liệu chia sẻ dữ liệu của công ty tổ chức. Có nhiều hình thức lưu trữ khác nhau phù hợp với nhu cầu của mỗi doanh nghiệp, hiện nay, phổ biến nhất là các hình thức lưu trữ sau:
DAS (Direct Attached Storage): Là lưu trữ sử dụng các ổ cứng gắn trực tiếp bên trong server, client và dữ liệu được truy xuất trực tiếp đến các ổ cứng này.
NAS (Network Atteched Storage): Đây là hình thức lưu trữ không gắn trực tiếp như DAS mà thông qua mạng LAN. Dữ liệu được truy xuất từ một thiết bị lưu trữ khác thông qua network.
SAN (Storage Area Network): Là mạng lưu trữ là một mạng chuyên dụng, hoàn toàn tách biệt với các mạng LAN và WAN. Đặc điểm của SAN là cho tốc độ truy xuất dữ liệu cao và khả năng mở rộng linh hoạt.
High-density direct-attached storage (DAS) designed to work with the latest generation of PowerEdge servers. Offers exceptional storage flexibility and IO performance and includes support for:
Up to 12 x 12Gb HDDs or SSDs
Up to 960TB maximum capacity with eight MD1400 enclosures (each with 12 x 10TB 7200 rpm 3.5" SAS HDDs) per server
Performance-optimized direct-attached storage (DAS) designed to work with the latest generation of PowerEdge servers. Offers exceptional storage flexibility and IO performance and includes support for:
Up to 24 x 6Gb or 12Gb 2.5" HDDs or SSDs
Up to 192 high-speed HDDs or SSDs with eight MD1420 enclosures (each with 24 SAS 2.5" HDDs or SSDs) per server
A 60-drive expansion enclosure specifically designed for the MD3 dense array series, the MD3060e dense enclosure is an eBOD (expansion bunch of disks), which operate in the same fashion as a JBOD (just a bunch of disks). There are two enclosure management modules (EMM) that allow for management of the expansion drives via the MD3 Dense Array controllers.
Up to 2 expansion enclosures can be daisy chained to an MD3 Series array
Options for mix and match of 3.5", 2.5", SED or SSD hard drives
Add 2 MD3060e enclosures (max) for up to 180 drives in just 12U, providing up to 1.8PB of raw capacity
Dual EMM controller option only, using the enclosure management modules
This SAS array provides high-availability and high-capacity when using 12Gb near-line SAS drives with Direct Attach Storage (DAS). In a 2U, 12-drive enclosure, it can support 4GB cache per controller, or 8GB cache per controller with the dual controller configuration.
Up to 2x performance with the new 12Gb SAS array.
Up to twelve 3.5-inch or 2.5" SAS, near-line SAS and SSD drives
Directly connect up to four high-availability (HA)-configured servers or eight non-HA-configured servers to a single MD3400 storage system
Expand capacity with up to eight MD1200 or MD1220 expansion enclosures
The PowerVault MD3 SAS series has been designed with the entry-level to medium business customer in mind. It uses 12Gb near-line SAS drives and DAS with single or dual active/active controllers in a 2U, 24-drive enclosure. It can support 4GB cache per controller, or 8GB cache per controller with the dual controller configuration.
Up to 2x performance with the new 12Gb SAS array.
Up to twenty-four 2.5-inch SAS, near-line SAS and SSD drives
Directly connect up to four high-availability (HA)-configured servers or eight non-HA-configured servers to a single MD3420 storage system
The MD3 dense SAS array has a 4U form factor that supports more drives than ever before within the MD3 product line, allowing you to save space, power and cooling while maintaining its ease-of-management. It uses 12Gb near-line SAS drives and DAS with dual active/active controllers, with a 60-drive capacity per enclosure. It can support 4GB or 8GB cache per controller.
Up to 2x performance with the new 12Gb SAS array
Options for mix and match of 3.5", 2.5", SED or SSD hard drives
Scale up to 180 drives in just 12U, providing up to 1.8PB of raw capacity
Standard high-performance tiering with SSD cache, dynamic disk pools and thin provisioning to optimize performance and capacity
vStorage APIs for Array Integration (VAAI) support
vCenter Plug-in to monitor and manage the PowerVault MD series arrays in conjunction with VMware virtualization software
16Gb Fibre Channel connectivity allows customers to take their Fibre Channel architecture to a higher level of performance and availability. The MD3800f features:
Up to twelve 3.5" or 2.5" SAS, near-line SAS and SSD drives in a 2U chassis
Support for a maximum of 180 or 192 drives when utilizing the Premium Feature Key to expand beyond the 120 standard configurations
Single or dual active/active controllers
4GB cache per controller or 8GB per controller in dual-controller configurations
16Gb Fibre Channel connectivity allows customers to take their Fibre Channel architecture to a higher level of performance and availability. The MD3820f features:
Up to 24x 2.5" SAS, near-line SAS and SSD drives in a 2U chassis
Support for a maximum of 180 or 192 drives when utilizing the Premium Feature Key to expand beyond the 120 standard configurations
Single or dual active/active controllers
4GB cache per controller or 8GB per controller in dual-controller configurations
16Gb Fibre Channel connectivity allows customers to take their Fibre Channel architecture to a higher level of performance and availability. The MD3860f features:
Up to 60-drive configuration (20 HDDs minimum), supporting 2.5" and 3.5" SAS, near-line SAS and SSD drives in a 4U chassis
Support for a maximum of 180 or 192 drives when utilizing the Premium Feature Key to expand beyond the 120 standard configurations
Standard High Performance Tiering with SSD Cache and Thin Provisioning to optimize performance and capacity
Single or dual active/active controllers
4GB cache per controller or 8GB per controller in dual-controller configurations
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