Mam nadzieję, że nie zaśmiecam wątku, ale wkleję dwa logi:
1. Test napędu narzędziem btape
*speed file_size=3 skip-raw
btape: btape.c:1081-0 Test with zero data and bacula block structure.
btape: btape.c:959-0 Begin writing 3 files of 3.221 GB with blocks of 64512 bytes.
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO6-D" (/dev/nst0)
btape: btape.c:405-0 Volume bytes=3.221 GB. Write rate = 140.0 MB/s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO6-D" (/dev/nst0)
btape: btape.c:405-0 Volume bytes=3.221 GB. Write rate = 134.2 MB/s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO6-D" (/dev/nst0)
btape: btape.c:405-0 Volume bytes=3.221 GB. Write rate = 140.0 MB/s
btape: btape.c:379-0 Total Volume bytes=9.663 GB. Total Write rate = 138.0 MB/s
btape: btape.c:1093-0 Test with random data, should give the minimum throughput.
btape: btape.c:959-0 Begin writing 3 files of 3.221 GB with blocks of 64512 bytes.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO6-D" (/dev/nst0)
btape: btape.c:405-0 Volume bytes=3.221 GB. Write rate = 119.3 MB/s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO6-D" (/dev/nst0)
btape: btape.c:405-0 Volume bytes=3.221 GB. Write rate = 115.0 MB/s
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
btape: btape.c:606-0 Wrote 1 EOF to "LTO6-D" (/dev/nst0)
btape: btape.c:405-0 Volume bytes=3.221 GB. Write rate = 115.0 MB/s
btape: btape.c:379-0 Total Volume bytes=9.663 GB. Total Write rate = 116.4 MB/s
2. Log po wykonaniu zadania
Backup Level: Full (upgraded from Incremental)
Client: "ts-rnd-fd" 5.2.10 (28Jun12) Microsoft Windows Server 2008 R2 Enterprise Edition Service Pack 1 (build 7601), 64-bit,Cross-compile,Win64
FileSet: "ts-rnd-fs" 2017-04-19 21:00:00
Pool: "Daily-Tape" (From Run Pool override)
Catalog: "MyCatalog" (From Client resource)
Storage: "LTO6-S" (From Pool resource)
Scheduled time: 20-kwi-2017 09:45:00
Start time: 20-kwi-2017 15:35:00
End time: 20-kwi-2017 19:21:19
Elapsed time: 3 hours 46 mins 19 secs
Priority: 5
FD Files Written: 2,167,968
SD Files Written: 2,167,968
FD Bytes Written: 549,529,951,726 (549.5 G
SD Bytes Written: 550,042,967,581 (550.0 G
Rate: 40469.1 KB/s
Software Compression: None
Snapshot/VSS: yes
Encryption: no
Accurate: no
Volume name(s): day-1
Volume Session Id: 5
Volume Session Time: 1492629492
Last Volume Bytes: 551,030,538,240 (551.0 G
Non-fatal FD errors: 0
SD Errors: 6
FD termination status: OK
SD termination status: OK
Termination: Backup OK -- with warnings
deb-lto-sd JobId 69: Sending spooled attrs to the Director. Despooling 854,279,379 bytes ...
deb-lto-sd JobId 69: Elapsed time=03:38:44, Transfer rate=41.91 M Bytes/second
deb-lto-sd JobId 69: Despooling elapsed time = 00:00:06, Transfer rate = 103.9 M Bytes/second
deb-lto-sd JobId 69: Committing spooled data to Volume "day-1". Despooling 623,542,886 bytes ...
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "COM+ REGDB Writer", State: 0x1 (VSS_WS_STABLE)
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "SqlServerWriter", State: 0x1 (VSS_WS_STABLE)
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "TermServLicensing", State: 0x1 (VSS_WS_STABLE)
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "Shadow Copy Optimization Writer", State: 0x1 (VSS_WS_STABLE)
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "Registry Writer", State: 0x1 (VSS_WS_STABLE)
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "ASR Writer", State: 0x1 (VSS_WS_STABLE)
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "IIS Config Writer", State: 0x1 (VSS_WS_STABLE)
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "WMI Writer", State: 0x1 (VSS_WS_STABLE)
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "System Writer", State: 0x1 (VSS_WS_STABLE)
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "Performance Counters Writer", State: 0x1 (VSS_WS_STABLE)
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "VSS Metadata Store Writer", State: 0x1 (VSS_WS_STABLE)
ts-rnd-fd JobId 69: VSS Writer (BackupComplete): "Task Scheduler Writer", State: 0x1 (VSS_WS_STABLE)
deb-lto-sd JobId 69: Spooling data again ...
deb-lto-sd JobId 69: Despooling elapsed time = 00:09:49, Transfer rate = 84.88 M Bytes/second
deb-lto-sd JobId 69: Writing spooled data to Volume. Despooling 50,000,033,498 bytes ...
deb-lto-sd JobId 69: User specified Job spool size reached: JobSpoolSize=50,000,033,498 MaxJobSpoolSize=50,000,000,000
deb-lto-sd JobId 69: Spooling data again ...
deb-lto-sd JobId 69: Despooling elapsed time = 00:11:04, Transfer rate = 75.30 M Bytes/second
deb-lto-sd JobId 69: Writing spooled data to Volume. Despooling 50,000,032,989 bytes ...
deb-lto-sd JobId 69: User specified Job spool size reached: JobSpoolSize=50,000,032,989 MaxJobSpoolSize=50,000,000,000
deb-lto-sd JobId 69: Spooling data again ...
deb-lto-sd JobId 69: Despooling elapsed time = 00:10:37, Transfer rate = 78.49 M Bytes/second
deb-lto-sd JobId 69: Writing spooled data to Volume. Despooling 50,000,033,779 bytes ...
deb-lto-sd JobId 69: User specified Job spool size reached: JobSpoolSize=50,000,033,779 MaxJobSpoolSize=50,000,000,000
deb-lto-sd JobId 69: Spooling data again ...
deb-lto-sd JobId 69: Despooling elapsed time = 00:10:51, Transfer rate = 76.80 M Bytes/second
deb-lto-sd JobId 69: Writing spooled data to Volume. Despooling 50,000,034,014 bytes ...
deb-lto-sd JobId 69: User specified Job spool size reached: JobSpoolSize=50,000,034,014 MaxJobSpoolSize=50,000,000,000
deb-lto-sd JobId 69: Spooling data again ...
deb-lto-sd JobId 69: Despooling elapsed time = 00:10:27, Transfer rate = 79.74 M Bytes/second
deb-lto-sd JobId 69: Writing spooled data to Volume. Despooling 50,000,033,249 bytes ...
deb-lto-sd JobId 69: User specified Job spool size reached: JobSpoolSize=50,000,033,249 MaxJobSpoolSize=50,000,000,000
deb-lto-sd JobId 69: Spooling data again ...
deb-lto-sd JobId 69: Despooling elapsed time = 00:10:19, Transfer rate = 80.77 M Bytes/second
deb-lto-sd JobId 69: Writing spooled data to Volume. Despooling 50,000,032,722 bytes ...
deb-lto-sd JobId 69: User specified Job spool size reached: JobSpoolSize=50,000,032,722 MaxJobSpoolSize=50,000,000,000
deb-lto-sd JobId 69: Spooling data again ...
deb-lto-sd JobId 69: Despooling elapsed time = 00:10:27, Transfer rate = 79.74 M Bytes/second
deb-lto-sd JobId 69: Writing spooled data to Volume. Despooling 50,000,033,262 bytes ...
deb-lto-sd JobId 69: User specified Job spool size reached: JobSpoolSize=50,000,033,262 MaxJobSpoolSize=50,000,000,000
deb-lto-sd JobId 69: Spooling data again ...
deb-lto-sd JobId 69: Despooling elapsed time = 00:09:53, Transfer rate = 84.31 M Bytes/second
deb-lto-sd JobId 69: Writing spooled data to Volume. Despooling 50,000,033,806 bytes ...
deb-lto-sd JobId 69: User specified Job spool size reached: JobSpoolSize=50,000,033,806 MaxJobSpoolSize=50,000,000,000
deb-lto-sd JobId 69: Spooling data again ...
deb-lto-sd JobId 69: Despooling elapsed time = 00:09:41, Transfer rate = 86.05 M Bytes/second
deb-lto-sd JobId 69: Writing spooled data to Volume. Despooling 50,000,033,775 bytes ...
deb-lto-sd JobId 69: User specified Job spool size reached: JobSpoolSize=50,000,033,775 MaxJobSpoolSize=50,000,000,000
deb-lto-sd JobId 69: Spooling data again ...
deb-lto-sd JobId 69: Despooling elapsed time = 00:10:02, Transfer rate = 83.05 M Bytes/second
deb-lto-sd JobId 69: Writing spooled data to Volume. Despooling 50,000,033,417 bytes ...
deb-lto-sd JobId 69: User specified Job spool size reached: JobSpoolSize=50,000,033,417 MaxJobSpoolSize=50,000,000,000
deb-lto-sd JobId 69: Spooling data again ...
deb-lto-sd JobId 69: Despooling elapsed time = 00:10:36, Transfer rate = 78.61 M Bytes/second
deb-lto-sd JobId 69: Writing spooled data to Volume. Despooling 50,000,033,914 bytes ...
deb-lto-sd JobId 69: User specified Job spool size reached: JobSpoolSize=50,000,033,914 MaxJobSpoolSize=50,000,000,000
ts-rnd-fd JobId 69: Generate VSS snapshots. Driver="Win64 VSS", Drive(s)="PUW"
deb-lto-sd JobId 69: Spooling data ...
deb-lto-sd JobId 69: Wrote label to prelabeled Volume "day-1" on tape device "LTO6-D" (/dev/nst0)
Czy ktoś może mi wytłumaczyć, dlaczego prędkość zapisu wynosi tylko 40MB/s ??
Rate: 40469.1 KB/s
Z testu wyszło, że Write rate jest na poziomie
115.0 MB/s
Z testu iperf wyszło mi, że przez sieć przepuszcza ponad 900Mb/s
Spooling przyspieszył czas zapisu dwukrotnie, z około 20MB/s do 40MB/s, ale co to jest za prędkość?