Search found 300 matches

by jsf
15 Jun 2016, 12:40
Forum: Firestreamer
Topic: Slow backup speed to network SOFS shares
Replies: 11
Views: 17858

Re: Slow backup speed to network SOFS shares

Can you try to back up to a non-SOFS share on a fast network, and compare the performance of SOFS and non-SOFS shares?
by jsf
14 Jun 2016, 22:41
Forum: Firestreamer
Topic: Slow backup speed to network SOFS shares
Replies: 11
Views: 17858

Re: Slow backup speed to network SOFS shares

Backing up to a virtual tape on a local disk (without SOFS involved) would give you an indication of the maximum transfer rate you should expect. If the local transfer rate significantly differs from the SOFS transfer rate, then it's a problem with SOFS because Firestreamer writes virtual tapes in t...
by jsf
09 Jun 2016, 21:53
Forum: Firestreamer
Topic: Slow backup speed to network SOFS shares
Replies: 11
Views: 17858

Re: Slow backup speed to network SOFS shares

The key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\clfs3chr\Parameters should be already present. The other settings I mentioned are values , not keys. You need to create them. Have you tried copying a big file (several GB in size) from the DPM VM to the network share using Windows Explorer?
by jsf
08 Jun 2016, 10:15
Forum: Firestreamer
Topic: Slow backup speed to network SOFS shares
Replies: 11
Views: 17858

Re: Slow backup speed to network SOFS shares

No, you don't need to do anything apart from changing the registry. The settings are applied each time a tape is loaded.
by jsf
03 Jun 2016, 23:37
Forum: Firestreamer
Topic: Slow backup speed to network SOFS shares
Replies: 11
Views: 17858

Re: Slow backup speed to network SOFS shares

Firestreamer makes no distinction between local disks and network shares. All virtual tape files are opened with the same API call: OBJECT_ATTRIBUTES tObjAttr; InitializeObjectAttributes( &tObjAttr, <file name>, OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE | OBJ_FORCE_ACCESS_CHECK, NULL, NULL ); DWORD a...
by jsf
21 May 2016, 02:06
Forum: Firestreamer
Topic: Best Practice to create the No of tape slot
Replies: 5
Views: 8907

Re: Best Practice to create the No of tape slot

Last question, will it be better to have a bigger drive or many No of small drive. Like I have 2TB Disk as Tape drive, when create media file, it is good to make it 10 Drive @ 200G each, or 20 drive @ 100G each?
Please refer to How many tapes of which sizes should I use?
by jsf
20 May 2016, 07:57
Forum: Firestreamer
Topic: Best Practice to create the No of tape slot
Replies: 5
Views: 8907

Re: Best Practice to create the No of tape slot

1 drive and 10 slot initially, to speed up the backup performance I am not sure how changing the number of tapes drives/slots from default 5/200 to 1/10 can possibly increase performance. 200 sounds too much, all appear on the hard drive and make confusion There are "slots" and there are actual tap...
by jsf
17 May 2016, 11:56
Forum: Firestreamer
Topic: Best Practice to create the No of tape slot
Replies: 5
Views: 8907

Re: Best Practice to create the No of tape slot

Why did you need to reduce the number of slots from 200 to 10? We do not recommend changing the default configuration of 5 tape drives / 200 slots, unless you really need to. For Firestreamer, it's not a problem. But from DPM's and your standpoint, every time you change Firestreamer's configuration,...
by jsf
09 Apr 2015, 19:31
Forum: Firestreamer
Topic: De-duplication Of .fsrm file in Server 2012
Replies: 8
Views: 15892

Re: De-duplication Of .fsrm file in Server 2012

We've reconsidered the problem as follows. Like a physical tape library, Firestreamer is not supposed to deduplicate data written to tapes as that defeats the purpose of tape backups. For example, if Firestreamer or the underlying storage deduplicated two similar tapes into a single copy of data on ...
by jsf
19 Feb 2015, 18:42
Forum: Firestreamer
Topic: DPM 2012 R2 backups to Tape and VTL
Replies: 3
Views: 9533

Re: DPM 2012 R2 backups to Tape and VTL

It looks correct, though I repeat we are not in the position to advise on Microsoft DPM configuration.