LTO 半高和全高驅動器之間的區別？

我注意到大多數磁帶驅動器供應商提供兩種選擇：全高或半高。半高驅動器體積更小，價格更便宜，但與全高同類產品相比，它們的規格似乎相同。

這些驅動器之間的真正區別是什麼？如果它們在操作上真的相同，我敢肯定沒有人會購買更昂貴的全高驅動器，並且它們將停止生產。

半高曾經有有限的連接選項，但現在幾乎支持全高所做的一切。可能除了 ESCON，但如果你使用它，你會有更大的問題（和預算）。

現在兩者之間的主要區別是最大速度。磁帶相同且可互換，但半高的速度可能是全高的 70%。檢查供應商發布的規格以完全確定。

Oracle 在他的文件中解釋了這一點：

What are the differences between full-height (FH) and halfheight
(HH) drives?
Full-height drives are twice the height (2U) of the half-height
drives (1U). In addition to the differences in the height of the
drives, half-height drives historically have had lower
specifications than full-height drives. For example, LTO 4
half-height drives have a native throughput of 80 MB/s while
the full-height drive’s native throughput is 120 MB/s. With the
LTO 5 and LTO 6 releases, this trend has changed; LTO 5
half-height and full-height drives both have a native
throughput of 140 MB/s, and LTO 6 half-height and fullheight
drives both have a native throughput of 160 MB/s.

http://www.oracle.com/us/products/servers-storage/storage/tape-storage/lto-tape-drives-overview-faq-1906830.pdf

引用自：https://serverfault.com/questions/329011