From: JV (jv711@yahoo.com)
Date: Thu Feb 26 2004 - 01:48:55 EST
I'm searching for a disk backup acceleration solution for my backup
environment, often called "tape virtualization".
I want an inexpensive IDE or SCSI disk array to receive backup
traffic over 100 Mbit & gigabit ethernet and store it for later
backup by Veritas Netbackup 4.5 MP6. I figure only having 500GB-1TB
of usable storage "hold" or stage these backups on disk directly
connected to the Netbackup Master, who can then deliver a steady high
I/O stream to LTO gen-1 drives. We are having an awful time with 100
Mbit Windows IP clients starving our tape drives and making them
shoeshine. The LAN just can't deliver as as fast the LTO wants to go
(15.9MB/sec).
I have looked at high-end devices like the NetApp R150, it's just
overkill and overbudget. I have seen a StorageTEK device from afar
which emulates "/dev/rmt/*cn" paths to fool the tape backup software
into writing to this disk device. After playing with Netbackup 4.5
MP6, it appears that backup policies which specify DISK storage units
cannot multiplex (single stream at a time). Supposedly in Netbackup
5.0 this goes multi-threaded.
StorageTEK
http://www.storagetek.com/products/tape_storage/tape_management_software/virtual_tape.html
Quantum - esp. the DX30
http://www.quantum.com/am/products/eb/dx30/default.htm
NearTek
http://www.neartek.com/vse2.cfm
I am looking for recommendations and experiences with these tape
virtualization units. Mgmt is partial to big recognized vendors like
Sun, IBM, StorageTEK, Quantum, NetApp etc with 24x7 1-800 support
lines. I'd appreciate some URLs with what you folks use.
Thanks in advance,
Will summarize.
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