[Martin Greenwood]

Make sure it’s not the 6328L as this does not work with SAS drives.

Note that the RocketStor 6328 does not support the TLR protocol. During tests with the Finder and our YoYottaID software it has not been compatible with the higher speed of LTO-7 drives.

However it should still see and allow control of the LTO drive.
Check our install page for the 6328 as this shows how to check that the drive is online.

https://yoyotta.com/help/installRocketStor.html

Please contact us if you need further help,

Martin Greenwood

YoYotta Support

[Martin Greenwood]

YoYottaID LTFS includes the ability to read TAR tapes and will auto detect and restore Cache-A archives. Then you can write new LTFS archives.

https://yoyotta.com/help/restoreTAR.html

Martin

CTO

YoYotta

[Martin Greenwood]

Hi Mauro,

YoYottaID Automation will move LTO tapes into the library drive automatically when needed for restore or archive. Then when another tape is needed the original tape will be shelved.
YoYottaID Automation will do this for all LTO libraries including the Quantum Superloader 3.

If archiving it will auto format a blank tape and then mount it.

You can also do this manually, sorry if this wan’t clear from our website.

Select a tape in the LTFS panel, see picture here :-

https://yoyotta.com/yoyottaid/automation.html

Then click the Mount or Format buttons.

Eject will put the tape back into the original slot.

Export will put the tape into a mailslot.

Move will move from one slot to another slot.

Martin Greenwood

CTO YoYotta

[Martin Greenwood]

Hi Tom,

We have customers archiving from NTFS formatted disks, however that log message suggests something problematic with the source disk / interface.

As a test I suggest copying the files to another RAID first. You can use YoYottaID to do this which will verify the transfer.
If this works then try the archive to tape again from this new copy.

Formatting the tape is correct and it’s the only to get back space used for previous tests. As deleting files from LTFS tapes doesn’t actually remove them.

Currently setting up for CineGear, so if you are in LA then please come visit YoYotta at booth 155 on Fri + Sat.
Bring an NTFS drive and we can test it out…

Martin Greenwood

CTO, YoYotta

[Martin Greenwood]

Hi Jeremy,

YoYottaID LTFS and YoYottaID Automation do sort the restore by physical position. If you watch the GUI during restore and verify you will see that the oldest archived items (first on tape) will be processed first.

If you want to retry our demo

https://yoyotta.com/help/demo.html

Martin Greenwood

CTO YoYotta

[Martin Greenwood]

Try out a demo of YoYottaID LTFS. It’s Mac software that will read your existing Cache-A tapes and write to all the makes of LTO-5/6/7 drives using LTFS. Note that an LTO-7 drive will read back LTO-5 tapes, so you may need an LTO-6 drive to read the LTO-4 tapes, unless you can repurpose the drive out of the Cache-A.

Martin Greenwood

CTO

YoYotta

[Martin Greenwood]

Andrew is correct that small files will transfer slowly to LTFS. However note that small means less than a few MB. ARRIRAW is 8MB or greater and these images sequences will transfer to LTO-6 up to the full speed of 160MB/s. If compression is enabled when formatting an LTFS tape then you will see speeds up to 10% faster. This is because ARRIRAW unlike most camera formats is uncompressed.

I just ran a test using our YoYottaID LTFS app copying 300GB of ARRIRAW to LTO-6 and the average speed was 160MB/s. This includes the time when the drive has to update indexes etc.

As mentioned at the start of this thread this depends on the source drive being able to source this speed. A single spinning drive whatever the interface will probably not be fast enough.

Martin Greenwood
CTO
martin@yoyotta.com

[Martin Greenwood]

I assume you have tried the ltfsck tool to try to recover the index? What is the error message you see when attempting to mount?
As far as raw reading, it looks like it’s working. The index is on the first partition and there usually isn’t a lot else on that partition, so you will get to the end of data quickly. You need to switch to reading from the second partition this is done with the SCSI locate command, try set partition or partseek with mt.

Martin Greenwood
CTO
yoyotta.com

[Martin Greenwood]

You should be limited by the Firewire 800 speed, this is probably around 50MB/s. The LTO drive will try to speed match slow sources however this may just be too slow. So the tape may be overshooting and rewinding. However 20Mb/s or 2.5MB/s is very very slow !
Ideally for shuttle drives use USB3 or Thunderbolt. With either of these interfaces you will see the full drive speed which is normally around 100MB/s for a portable drive. The LTO will work OK at this speed.
Ideally LTO6 would want at least 160MB/s source speed.
You could try the demo of our OS X software YoYottaID LTFS to see what speed it copies to tape. You could also use YoYottaID to copy from the Firewire drive to another faster drive, this will give you a real world idea of the max transfer of the ARRIRAW files from that drive. Please let us know how you get on.

Martin Greenwood
CTO
martin@yoyotta.com

[Martin Greenwood]

I regularly use the older RocketStor 6328 with Thunderbolt 1 and it works perfectly controlling multiple LTO drives. You do need to make sure you have the latest firmware in the unit, otherwise it may not see the drive correctly.

https://highpoint-tech.com/USA_new/support_lto.htm

You will then be able to use Quantum LTFS to mount the LTFS tape on your desktop, although we recommend using software like our YoYottaID LTFS to manage your archiving and restores.

Let me know how you get on…

Martin Greenwood
martin@yoyotta.com
CTO
yoyotta.com