[mythtv-users] What is best filesystem for recordings?

[Simon Hobson]

Andre Newman <mythtv-list at dinkum.org.uk> wrote:

> What happens when you do rewrite? Does the drive cache the rewritten tracks until it gets to the guard band?

I believe these drives do handle that internally. That's when the reviews mention I/O speed dropping to zero for a while as the drive goes into a "read - modify - write" operation on a big chunk of data. Unless it's got a huge buffer, then it's also going to be limited in how much write-data it can cache since it'll need to keep enough space for the entire track group it needs to read-modify-write.


You do need to be careful, I was reading a review of a new drive a few weeks back (forget the details, apart from being IIRC 10TB SMT) which is designed to be engineered into a storage appliance and which needs host OS support for it. Different drives, different markets.
Oh, here it is : http://www.theregister.co.uk/2015/06/09/hgst_packs_shingles_to_make_10tb_drive/