Compaq ProLiant 6000 Compaq DLT Tape Array II: High-Performance Backup of Ente - Page 12

Erformance, Ovell, Ntranet

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ECG075.0997 (cont.) DLT Tape Array II ... TEST 3 118 GB/HR PERFORMANCE TEST  NOVELL INTRANETWARE Novell IntranetWare 4.11 Build 2884 Cheyenne JETserve 4.0 Plus Image 2 GB 2:1, 4:1 None RAIT-0 ProLiant 5000, two Pentium Pro 200 processors, 256K cache, 256 MB RAM 80-GB array (two SMART-2/P Array Controllers with twenty 4-GB drives) 35/70 GB DLT drive(s) Wide-Ultra SCSI-3 cards (All Compaq off-the-shelf products) The initial purpose of this test was to find the fastest backup solution using Cheyenne JETserve and to examine performance variables. Long after this set of tests was performed, it was discovered that the addition of two SMART-2/P Array controllers and disk drives dramatically improved performance. Test 2 demonstrates this peak performance system. Of the configurations tested, a typical DLT Tape Array II solution with two SCSI cards driving four 35/70 GB DLT tape drives offers the fastest backup speed (118 GB/hr). The four card/eight drive configuration provides high speed (89 GB/hr) and very large capacity (more than 560 GB at 2:1 compression and more than 1 terabyte at 4:1) on a single set of mounted tapes. Numerous tests showed the two card/four drive setup to be the highest performer. The 2:1 versus 4:1 test results prompted other tests to measure the compressibility factor (see Test 6, page 19). This set of tests illustrates the levels of performance that might be seen in this configuration. To achieve the highest speeds possible, a very fast source hard disk drive storage system is required. Other factors, such as CPU speed and bus speeds, also influence backup speed.

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7
%
(cont.)
DLT Tape Array II
ECG075.0997
T
EST
3
118 GB/
HR
P
ERFORMANCE
T
EST
N
OVELL
I
NTRANET
W
ARE
Novell IntranetWare 4.11 Build 2884
Cheyenne JETserve 4.0 Plus
Image
2 GB
2:1, 4:1
None
RAIT-0
ProLiant 5000, two Pentium Pro 200 processors, 256K
cache, 256 MB RAM
80-GB array (two SMART-2/P Array Controllers
with twenty 4-GB drives)
35/70 GB DLT drive(s)
Wide-Ultra SCSI-3 cards
(All Compaq off-the-shelf products)
The initial purpose of this test was to find the fastest backup solution using Cheyenne JETserve
and to examine performance variables. Long after this set of tests was performed, it was
discovered that the addition of two SMART-2/P Array controllers and disk drives dramatically
improved performance. Test 2 demonstrates this peak performance system.
Of the configurations tested, a typical DLT Tape Array II solution with two SCSI cards driving
four 35/70 GB DLT tape drives offers the fastest backup speed (118 GB/hr). The four
card/eight drive configuration provides high speed (89 GB/hr) and very large capacity (more
than 560 GB at 2:1 compression and more than 1 terabyte at 4:1) on a single set of mounted
tapes. Numerous tests showed the two card/four drive setup to be the highest performer. The
2:1 versus 4:1 test results prompted other tests to measure the compressibility factor (see Test 6,
page 19).
This set of tests illustrates the levels of performance that might be seen in this configuration. To
achieve the highest speeds possible, a very fast source hard disk drive storage system is
required. Other factors, such as CPU speed and bus speeds, also influence backup speed.
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