KB Logo

TOLIS Group Knowledge Base

Browse KB by category:
Go to KB #:
Glossary
Email   Bookmark



Sub-Categories
 
folder BRU Error Codes (4)
A complete list of the error codes that you may see from BRU, BRU Server, BRU LE, BRU Workstation, and BRU Desktop.


Showing: 1-15 of 40    Next Page »»
Articles
 
document SAS versus Fibre Channel - Which do I choose?
TOLIS Group currently offers tape storage bundles with two different interconnect options - Fibre Channel (FC) and Serial Attached SCSI (SAS). Many customers contact us because of confusion over which interface they should purchase. Aside from pricing differences (FC models average around $900...
rating 2012-01-03 11:10:36 Views: 16773
document How Much Space Remains on a Tape?
This question is probably one of the top ten questions that we are most frequently asked by tape drive owners: How can I tell how much space is left on a tape? The simple and straight forward answer: you can't. The reason for this is because all BRU products permit the drive to perform...
rating 2011-12-08 12:19:36 Views: 10589
document LTO-5 Tape Drive Head Wear
An important bit of LTO-5 media info has come to light over the past few weeks. In cooperation with HP, we've discovered that some brands of recently available LTO-5 media are too "rough" and can cause undue head wear; specifically when used for archival tasks where the tape is used once...
rating 2011-08-19 22:15:22 Views: 15085
document Tape Management: Erase vs. Overwrite
There really is no reason to physically erase a tape for reuse since running a backup operation set to "Overwrite" mode effectively erases any previous data that may have existed on the tape being used. Additionally, erasing a tape puts unnecessary wear on both the tape being erased and...
Not rated 2011-07-08 11:19:37 Views: 12770
document Linear Tape File System (LTFS) Caveats
TOLIS Group has compiled the following list of caveats for the Linear Tape File System (LTFS) that we feel users of LTFS need to be made aware of before they begin use of LTFS. Updated August 26, 2014 Disclaimer: While TOLIS Group provides the files and drivers necessary to enable...
rating 2011-05-11 09:12:07 Views: 25672
document About the New Thunderbolt I/O Connectivity
With the announcement by Intel® of the new Thunderbolt™ I/O technology and Apple® being the first customer to implement the Thunderbolt technology, we want to make sure that you all understand that this is simply an I/O protocol layer (such as SAS, FireWire, or USB) and all...
rating 2011-03-01 10:17:15 Views: 9582
document 2:1 Compression is Not Real World and Most Never See 2:1 Compression
When considering media requirements for your tape-based backup operations, you must always use the Native Capacity rating for all tape technologies. Most tape device and media manufacturers market their technologies based upon a mythical 2:1 compression value — meaning that for every two...
rating 2010-11-05 08:41:39 Views: 11369
document Understanding Unix/Linux Timestamp's
Have you ever wondered what the 'ctime', 'mtime', 'atime' and the occasional 'btime' phrases are all about? What about an inode? Well, the concept is really quite simple, once you understand what each means and what each is for on a Linux/Unix filesystem. Linux/Unix filesystem's (such as...
rating 2010-04-29 09:37:09 Views: 12210
document Using the AIC7xxx_old module for SCSI devices on Linux
Under certain circumstances, users of the early versions on the AIC7xxx module on Linux caused some headaches due to new code and changes that were used in the AIC7xxx kernel module. Luckily, most Linux distributions include the AIC7xxx_old, which is the older version, module for you to...
rating 2009-09-04 11:08:36 Views: 10628
document Why are my BRU Archives Larger than the data being backed up?
Question When I perform a backup of data on the system, the resulting BRU archive is larger than the total of the data selected for backup.  Is something wrong with my filesystem? Answer Unlike a simple copy, BRU keeps track of data that is
rating 2009-08-10 10:48:09 Views: 9088
document MegaBytes versus Megabits
There is a common misunderstanding, not just in the backup world, but in general about the difference between a MegaByte (MB) and a Megabit (Mb).  The main cause of the problem is the fact that all data storage is quoted and referenced in Bytes (KB, MB, GB, TB, etc) and network transfer speeds...
rating 2009-06-02 12:19:21 Views: 9379
document Buffer Size Limitations
All BRU products support a multitude of buffer sizes that the user is able to specify when writing to tape devices.  However, not all tape formats support all buffer sizes that BRU is capable of using.  Therefore, if you are using BRU to backup to a tape device, be aware of the following...
rating 2009-05-20 18:22:58 Views: 16418
document Information on FireWire Cables
Over the past few weeks, our support department has seen a spike in inquiries for purported software issues such as aborted writes or disk and tape drives simply disappearing from the FireWire bus that turned out to be simple cable-related problems. Though it may seem unbelievable (or even...
rating 2009-01-07 09:59:23 Views: 13828
document Disable/Enable Hardware Compression When Using BRU
We get the question of tape drive hardware compression disabling a lot, but it's answered by understanding the way that tape drives work. All current tape drive vendors use some version or another of an adaptive compression algorithm.   What this means is that the data stream coming...
rating 2008-11-18 16:31:21 Views: 17502
document Important LTO-4 SAS and SAS HBA Information
Important LTO-4 SAS and SAS HBA Information Issues using Quantum LTO-4 SAS tape drives under Mac OS X continue to be recognized and reported.  We strongly urge Mac OS X users moving to SAS tape to use drives manufactured by HP or IBM to realize proper
rating 2008-10-20 17:56:23 Views: 18801



RSS
Powered by KnowledgebasePublisher
Page Load Time: 0.039322 seconds / 39.322 milliseconds.
Page File Size: 34667 bytes.