ECKD and SCSI on DS8000

The measurements aim at finding out the performance/throughput of a DS8300 when the workload is running over

• One disk (1D)
  
  
• One channel (1C) - for SCSI measurement only
  Only one channel on the host
  
  
• One WWPN (1WWPN) - for SCSI measurement only
  Only one host adapter on the storage server
  
  
• One rank (1R)
  Up to 16 disks out of one rank
  
  
• One Device Adapter (1DA)
  Up to 32 disks out of 2 ranks served by only one device adapter of a device adapter pair
  
  
• One Device Adapter Pair (1DP)
  Up to 64 disks out of 4 ranks served only by one device adapter pair (both servers)
  
  
• Full configuration (F)
  64 disks out of 16 ranks and 2 servers
  
  
• Logical Volumes (LVs)
  A logical volume using 16 disks out of 16 ranks, 16 stripes, created with LVM2
  

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System z:

2084-B16 (z990) LPAR
0.83ns (1.20GHz)
2 Books each with 8 CPUs
2 * 32 MB L2 Cache
80 GB Memory
8 FICON Express 2 (2Gbps)
8 FCP Adapter (2Gbps)

DS8300:

2107-922 (DS8300)
256 GB Cache // 1-8 GB NVS
256 * 73 GB disks 15.000 RPM
capacity: 23.3 TB (11.6TB SCSI, 11.6TB ECKD)
16 disk enclosures - 4 device adapter pairs
16 ranks SCSI disks
16 ranks ECKD disks
8 FCP (2 Gbps)
8 FICON (2 Gbps)
µCode Level 6.1.0.44
(RAID 5)

Linux:

SUSE SLES9 SP2
Linux 2.6.5-7.191-s390x #1 SMP Tue Jun 28 14:58:56 UTC 2005 s390x GNU/Linux 8 CPUs
8 Ficon / 8 FCP
256 MB

Workload:

Iozone 3.96 (http://www.iozone.org)

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