3 ms·
With 3x compression and 900 MB/s it only takes 46 hours to fill one. But maybe I’m bad at math. Perhaps more importantly it will take that long to do a full rec
by mgerdts 3y ago
With 3x compression and 900 MB/s it only takes 46 hours to fill one. But maybe I’m bad at math. Perhaps more importantly it will take that long to do a full recovery from one.
- chrisco255 3y agoThat's nearly 1 GB/s. ~18 minutes per terabyte. What would you be doing a full recovery of on 150 terabytes of data? This type of storage is usually for archive data not for quick restoration of active servers or databases.
- klabb3 3y agoBtw what does 3x compression mean in this case? Does the device itself do compression and if so how can it be a fixed rate, given the data is arbitrary?
- stonogo 3y agoYes, the compression is on-device, and it's not a fixed rate, it's a peak. Efficiently-stored data like video compresses less well or not at all.
- tempay 3y agoLTO drives include compression and manufactures quota both the guaranteed/native capacity/speed as well as the "compressed" capacity/speed. In they case of IBM they always use a 3:1 ratio in their specs. Of course in reality it depends on the data you feed it so the ratio has always seemed odd to me but it is what it is.