ARCserve 5.01g poor backup speeds with DLT in a Shogun

As default ARCserve is configured to use a 512k block size. Due to such a small block size being used as default the DLT is unable to stream correctly.

To overcome this problem the block size and buffer size need to be increased.

Edit SYS:\ARCSERVE\NLM\TAPESVR.CFG and add the following lines (changes in Bold).

“SYS:\ARCSERVE\NLM\TAPESVR.CFG”

[CONFIG]
BLOCKSIZE=5
BUFFER=20
[NLM]
NLM1 = standard group-ARCSERVE ; 1st load

After restarting ARCserve check the block size of the cartridges by the following..

TAPESVR screen - DEVICE MANAGEMENT - TAPE DRIVE STATUS

If the Block size is not 16384 then perform an erase on the tape, this will change the block size from 512 to 16384.

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