Search found 162 matches

by Axel Mertes
Fri Dec 14, 2018 7:24 am
Forum: Latest News
Topic: [2017-12-21] PrimoCache 3.0.2 released!
Replies: 55
Views: 11207

Re: [2017-12-21] PrimoCache 3.0.2 released!

I think all it really needs is a journaled write cache and an indication, which os host was running when writing that journal. This way you could finish missing journaled write operations during bootup. Clearly users can always manually create a situation that could sacrifice the write cache. There ...
by Axel Mertes
Tue Dec 11, 2018 8:07 am
Forum: Latest News
Topic: [2017-12-21] PrimoCache 3.0.2 released!
Replies: 55
Views: 11207

Re: [2017-12-21] PrimoCache 3.0.2 released!

I do space defrag with o&o defrag on my 64 TB volumes every night. It typically runs only minutes, as the data to be moved is usually in the cache. I do not turn off PrimoCache. I have even write caching enabled on some vokumes. Runs smoothly since years on Windows 2012 R2 server.
by Axel Mertes
Thu Dec 06, 2018 5:05 pm
Forum: Latest News
Topic: [2017-12-21] PrimoCache 3.0.2 released!
Replies: 55
Views: 11207

Re: [2017-12-21] PrimoCache 3.0.2 released!

I am using O&O Defrag 19 with 3.08, works like a charm for me. I also used Diskeeper along 2.40, also no problems. You should defragment regularly, like every night. Depending on the size of your cache, you will see fairly quick defrags and it keeps your drives very clean and fast. One note: If you ...
by Axel Mertes
Fri Nov 30, 2018 11:01 am
Forum: Technical Support
Topic: Help with setup 256gb ram 48TB HDD drive for video storage
Replies: 20
Views: 1414

Re: Help with setup 256gb ram 48TB HDD drive for video storage

support wrote:
Fri Nov 30, 2018 6:40 am
Axel Mertes wrote:
Thu Nov 29, 2018 4:54 pm
I should add the wish for PrimoCache to allow read-ahead caching in that context.
Sure, read-ahead is under our consideration.
:!: :!: :!: SUPER :!: :!: :!:

:D
by Axel Mertes
Thu Nov 29, 2018 4:54 pm
Forum: Technical Support
Topic: Help with setup 256gb ram 48TB HDD drive for video storage
Replies: 20
Views: 1414

Re: Help with setup 256gb ram 48TB HDD drive for video storage

I should add the wish for PrimoCache to allow read-ahead caching in that context. When data is sequential on defragmented files, it may improve read speed a lot if PrimoCache makes sure to preload a custom number of blocks BEYOND the last requested block. Why? Because whenever the next streaming blo...
by Axel Mertes
Thu Nov 29, 2018 4:38 pm
Forum: Technical Support
Topic: Help with setup 256gb ram 48TB HDD drive for video storage
Replies: 20
Views: 1414

Re: Help with setup 256gb ram 48TB HDD drive for video storage

Hey, that is pretty similar to what I am doing here, film post production on large 64 TB RAIDs and using disk to disk backup for daily nearline backup purpose. As Support and Jaga already mentioned, a read cache doesn't really help on your backup need, because you will likely only read the data once...
by Axel Mertes
Tue Nov 27, 2018 5:52 pm
Forum: Technical Support
Topic: Max size for L2 Cache
Replies: 6
Views: 340

Re: Max size for L2 Cache

Hi Talaverde, can you explain a bit about what kind of data you are processing and storing on you system? I am running two servers with PrimoCache Server. The first server uses PrimoCache 2.4 for read caching 6 individual RAID5 and RAID6 system partitions from Fibre Channel SAN, about 64 TByte in to...
by Axel Mertes
Tue Nov 20, 2018 7:16 am
Forum: Submit Suggestions
Topic: Journaling / recover write cache data from L2 cache
Replies: 1
Views: 142

Journaling / recover write cache data from L2 cache

Hi Romex Software team! We have discussed it a couple of times in the past, but I think its worth to give it special attention: There is a huge need to consider implementing some kind of journaling L2 write cache in PrimoCache to be able to recover not yet flushed data from L2 SSD write cache to be ...
by Axel Mertes
Sat Nov 17, 2018 4:14 am
Forum: Technical Support
Topic: PrimoCache Server in combination with a Intel 900P Optane card
Replies: 38
Views: 4417

Re: PrimoCache Server in combination with a Intel 900P Optane card

I can see larger amounts of urgent writes, see here: https://www.dropbox.com/s/a68a307eu12tqg6/PrimoCacheSettings%20P%202018-11-17.png?dl=0 https://www.dropbox.com/s/a68a307eu12tqg6/PrimoCacheSettings%20P%202018-11-17.png?dl=0 I changed the setting for defer-write to 10s to see if thats better. I wi...
by Axel Mertes
Fri Nov 16, 2018 10:41 am
Forum: Submit Suggestions
Topic: More detailed information on flushing write cache data
Replies: 3
Views: 191

Re: More detailed information on flushing write cache data

OK, I understand. But then all that could happen is that the amout of total blocks is increasing again, right, potentially setting back the progress bar. I could live with that... But when I think about it: Wouldn't that mean that a flush to disk may end up running forever, if enough new disk data i...