Friday, August 6, 2010

Tape? Really?

I've moved my backup system to tape. My Amazon S3 experiment has not been reliable (or fast). Network backup is great, but going from a residential connection out is just not useful if have more than a couple gigabytes of data that changes daily. So I decided to go with tried and true technology: tape.

I have an HP StorageWorks DAT 72 external USB tape drive now. And 5 tapes. I'll probably need more tapes, but they cost around $5 each, so I'm not too worried about that.

Plugging in the drive caused the kernel to excrete these messages:

usb 1-1.4.2: new high speed USB device using ehci_hcd and address
usb 1-1.4.2: New USB device found, idVendor=03f0, idProduct=0125
usb 1-1.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-1.4.2: Product: DAT72 USB Tape
usb 1-1.4.2: Manufacturer: Hewlett Packard
usb 1-1.4.2: SerialNumber: 4855311024394344
scsi5 : usb-storage 1-1.4.2:1.0
scsi 5:0:0:0: Sequential-Access HP C7438A ZU8B PQ: 0 ANSI: 3
scsi 5:0:0:0: Attached scsi generic sg3 type 1
st: Version 20081215, fixed bufsize 32768, s/g segs 256
st 5:0:0:0: Attached scsi tape st0
st 5:0:0:0: st0: try direct i/o: yes (alignment 512 B)
osst :I: Tape driver with OnStream support version 0.99.4
osst :I: $Id: osst.c,v 1.73 2005/01/01 21:13:34 wriede Exp $

I have a test backup running now, but will play with it more tomorrow. So far it's A LOT faster than any of my network backup attempts.

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