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Performance optimization when SORT is called very often as a sub-
program (e.g. more than 10.000 times in a main program) while very
few records are sorted (e.g. less than 100).
2.14 Support for new hardware FibreCAT CX3 and LTO-3
FibreCAT CX3
The FibreCAT CX3 is the successor system of the FibreCAT
CX500/CX700.
LTO-3
LTO-3 drives operation on SX servers is being released as of OSD/XC
V2.1 in connection with X2000 V3.0A09 (General release 01.07). Two
different configurations are supported:
- LTO-3 drives can be operated on SX servers within an FC-connected
FibreCAT TX24 library system.
- LTO-3 devices can be connected directly to SX servers (directly
means without CentricStor) via type FC channel and can be operated
in conjunction with a Quantum/ ADIC Scalar 10K, i2000 or i500 li-
brary system. Control of the new Scalar i500 library was imple-
mented in the ROBAR V6.0 version (General release 01.07).
If the high-performance LTO-3 devices are to be connected directly
to BS2000 hosts, a well-balanced configuration is supposed, i.e.
also fast disk peripherals are required, the disks must be con-
nected via Fibre Channel. New storage systems (CX500/CX700, CX3,
DMX-3) with fast disks and RAID groups RAID5 with an adequate
amount of disks or preferably RAID 1/0 are recommended. Data backup
must be performed with the new versions of HSMS/ARCHIVE and FDDRL:
HSMS/ARCHIVE V8.0B, FDDRL V16.0.
In order to support the high LTO-3 data rates in an adequate way
(the maximum data rate is 160 MB/sec (compressed)), new versions of
the BS2000 backup products were released in 2006, December, that
attain corresponding data rates by parallelizing disk access. In
V16.0, FDDRL supports I/O parallelisation and, in addition, the si-
multaneous backups from two disks on a single tape (Multiplexing).
If no optimum disk configuration is available, the LTO-3 devices’
standard compression function can be switched off with the new I/O
resource manager IORM, in order to decrease the minimum data rate
that is required for the LTO-3 tapes streaming function (see IORM
TCOM tape compression function for details).
On SX100 servers, LTO-3 drives are always shipped with compression
switched off because of the low RPF performance.
2.15 Functional Enhancements with Correction Package 1/2008
*2 OSD/XC V3.0 support for new DMX-4 hardware
*2 In 2007, December release was given for the DMX-4 series
*2 Symmetrix disk subsystems for connection to BS2000/OSD via
*2 type FC channel (on S servers and SX servers) and via
*2 type S channel (on S servers only).
*2 For OSD/XC V3.0 Correction Package 2/2007 is required.
*2 The SHC-OSD V6.1 subsystem serves for function support from
*2 BS2000/OSD.
*2 The lowest required correction level is V6.1A01 (release
*2 12/2007)
*2 New versions of software products
*2 Apache V2.2