Appendix C Required Disk Space for Performance Management

This appendix explains the required disk space for the performance management with ETERNUS SF Manager.

When the performance management is being performed, based on the fibre channel switch used to collect the performance information, the type of ETERNUS Disk storage system, the number of logical units involved, the number of Disk Enclosures (DEs), and the number of days for which information is to be collected, the required capacity given below becomes necessary.

Information

The default number of days for collection is seven. The number of secured Logical Units (LUs) is the actual number of LUs the functions of which are secured in order to perform performance management for the ETERNUS Disk storage systems. Performance management is secured in units of 64 LUN for the ETERNUS Disk storage systems. Therefore, when instructed to secure from LUN 15 to 200, the information for the actual LUs 0 to 255 (256 in total) would be secured.

Target device	Required disk space (Unit : MB)
ETERNUS DX60/DX60 S2 ETERNUS DX80/DX80 S2 ETERNUS DX90/DX90 S2	(keepingDays + 1) * (240 + (1.2 + 0.3 * DEs + 0.3 * (securedLUs + secured_RAIDGroups)) * (86400 / perfMonitorInterval) + 3 * (10.6 + 0.07 * (86400 / perfMonitorInterval)) (95 * DEs) + (50 * (securedLUs + securedRAIDGroups))) / 1024 1: The securedRAIDGroups is the number of RAIDGroups created from the secured LUs. 2: The performance monitoring interval sets 60 seconds if its interval is set to less than 60 seconds.
ETERNUS DX400 series	(keepingDays + 1) * (6837 + (17 + 0.2 * DEs + 0.2 * securedLUs + 0.3 * securedRAIDGroups) * (86400 / perfMonitorInterval) + (10.6 + 0.07 * (86400 / perfMonitorInterval)) + (79 * DEs) + (89 * securedLUs) + (103 * securedRAIDGroups)) / 1024 1: The securedRAIDGroups is the number of RAIDGroups created from the secured LUs. 2: The performance monitoring interval sets 60 seconds if its interval is set to less than 60 seconds.
ETERNUS DX400 S2 series ETERNUS DX8000 S2 series	(keepingDays + 1) * (6837 + (17 + 0.2 * DEs + 0.2 * securedLUs + 0.3 * securedRAIDGroups) * (86400 / perfMonitorInterval) + 3 * (10.6 + 0.07 * (86400 / perfMonitorInterval)) + (79 * DEs) + (89 * securedLUs) + (103 * securedRAIDGroups)) / 1024 1: The securedRAIDGroups is the number of RAIDGroups created from the secured LUs. 2: The performance monitoring interval sets 60 seconds if its interval is set to less than 60 seconds.
ETERNUS DX8100	Refer to the formula of ETERNUS DX400 series.
ETERNUS DX8400 ETERNUS DX8700	(keepingDays + 1) * (24090 + (60 + 0.2 * DEs + 0.2 * securedLUs + 0.3 * securedRAIDGroups) * (86400 / perfMonitorInterval) + (10.6 + 0.07 * (86400 / perfMonitorInterval)) + (79 * DEs) + (89 * securedLUs) + (103 * securedRAIDGroups)) / 1024 1: The securedRAIDGroups is the number of RAIDGroups created from the secured LUs. 2: The performance monitoring interval sets 60 seconds if its interval is set to less than 60 seconds.
ETERNUS2000	The firmware version is older than V10L50: (keepingDays +1) * (140 + (0.7 + 0.2 * DEs + 0.3 * (securedLUs + securedRAIDGroups)) * (86400 / perfMonitorInterval) + (60 * DEs) + (50 * (securedLUs + securedRAIDGroups))) / 1024 1: The securedRAIDGroups is the number of RAIDGroups created from the secured LUs. The firmware version is V10L50 or later: (keepingDays +1) (140 + (0.7 + 0.2 * DEs + 0.3 * (securedLUs + securedRAIDGroups)) * (86400 / perfMonitorInterval) + (10.6 + 0.07 * (86400 / perfMonitorInterval)) + (60 * DEs) + (50 * (securedLUs + securedRAIDGroups))) / 1024 1: The securedRAIDGroups is the number of RAIDGroups created from the secured LUs. 2: The performance monitoring interval sets 60 seconds if its interval is set to less than 60 seconds.
ETERNUS4000 models 300 and 500	The firmware version is older than V11L40: (keepingDays + 1) * (5000 + (30 + 0.4 * DEs + 0.3 * securedLUs) * (86400 / perfMonitorInterval) + (120 * DEs) + (50 * securedLUs)) / 1024 The firmware version is V11L40 or later, and older than V11L50: (keepingDays + 1) * (5000 + (30 + 0.4 * DEs + 0.3 * (securedLUs + securedRAIDGroups)) * (86400 / perfMonitorInterval) + (120 * DEs) + (50 * (securedLUs + securedRAIDGroups))) / 1024 1: The securedRAIDGroups is the number of RAIDGroups created from the secured LUs. The firmware version is V11L50 or later: (keepingDays +1) (5000 + (30 + 0.4 * DEs + 0.3 * (securedLUs + securedRAIDGroups)) * (86400 / perfMonitorInterval + (10.6 + 0.07 * (86400 / perfMonitorInterval)) + (120 * DEs) + (50 * (securedLUs + securedRAIDGroups))) /1024 1: The securedRAIDGroups is the number of RAIDGroups created from the secured LUs. 2: The performance monitoring interval sets 60 seconds if its interval is set to less than 60 seconds.
ETERNUS4000 models 400 and 600	Refer to the formula of ETERNUS DX400 series.
ETERNUS8000 models 700, 900, 1100 and 2100	The firmware version is older than V11L40: (keepingDays + 1) * (18000 + (90 + 0.4 * DEs + 0.3 * securedLUs) * (86400 / perfMonitorInterval) + (120 * DEs) + (50 * securedLUs)) / 1024 The firmware version is V11L40 or later, and older than V11L50: (keepingDays + 1) * (18000 + (90 + 0.4 * DEs + 0.3 * (securedLUs + securedRAIDGroups)) * (86400 / perfMonitorInterval) + (120 * DEs) + (50 * (securedLUs + securedRAIDGroups))) / 1024 1: The securedRAIDGroups is the number of RAIDGroups created from the secured LUs. The firmware version is V11L50 or later: (keepingDays +1) (18000 + (90 + 0.4 * DEs + 0.3 * (securedLUs + securedRAIDGroups)) * (86400 / perfMonitorInterval) + (10.6 + 0.07 * (86400 / perfMonitorInterval)) + (120 * DEs) + (50 * (securedLUs + securedRAIDGroups))) /1024 1: The securedRAIDGroups is the number of RAIDGroups created from the secured LUs. 2: The performance monitoring interval sets 60 seconds if its interval is set to less than 60 seconds.
ETERNUS8000 model 800	Refer to the formula of ETERNUS DX400 series.
ETERNUS8000 models 1200 and 2200	Refer to the formula of ETERNUS DX8400/DX8700.
ETERNUS SN200 series Fibre Channel switch (Maximum number of FC ports = 16 or less) PRIMERGY Fibre Channel Switch Blade PRIMERGY Fibre Channel Switch Blade(4Gbps) Brocade Fibre Channel Switch (Maximum number of FC ports = 16 or less)	(keepingDays +1) * (30 / perfMonitorInterval) * 1.6
ETERNUS SN200 series Fibre Channel switch (Maximum number of FC ports = 32 or less) Brocade Fibre Channel Switch (Maximum number of FC ports = 32 or less)	(keepingDays +1) * (30 / perfMonitorInterval) * 3.2
ETERNUS SN200 series Fibre Channel switch (Maximum number of FC ports = 128 or less) Brocade Fibre Channel Switch (Maximum number of FC ports = 128 or less)	(keepingDays +1) * (30 / perfMonitorInterval) * 13
ETERNUS SN200 series Fibre Channel switch (Maximum number of FC ports = 256 or less) Brocade Fibre Channel Switch (Maximum number of FC ports = 256 or less)	(keepingDays +1) * (30 / perfMonitorInterval) * 26
ETERNUS SN200 series Fibre Channel switch (Maximum number of FC ports = 384 or less) Brocade Fibre Channel Switch (Maximum number of FC ports = 384 or less)	(keepingDays +1) * (30 / perfMonitorInterval) * 39
ETERNUS SN200 MDS series Fibre Channel switch	(keepingDays +1) * 0.1 * maxNumberOfSlotsSupportedByDevice * 128 * (30 / perfMonitorInterval) *1: Use 1 as the maximum number of slots for MDS9120

Additionally, when performance information is output using the performance information operation command, the following disk space is required, depending on the number of LUs of ETERNUS Disk storage system and Fibre Channel switches, number of DEs, number of ports that is used to collect performance information, and number of days of performance information output.
Each element (number of installed CM CPUs, number of installed DEs, installed CA Ports, installed CM Ports, LUs, RAIDGroups, and installed FC Ports) is the number mounted in the device when the command is executed.

Target device	Required disk space (Unit : MB)
ETERNUS DX60/DX60 S2 ETERNUS DX80/DX80 S2 ETERNUS DX90/DX90 S2	outputDays * (((0.1 + 0.4 * DEs + 0.1 * CMPorts + 0.2 * (LUs + RAIDGroups)) * (86400 / perfMonitorInterval)) + (0.2 + 0.6 * DEs + 0.2 * CMPorts + 0.4 * (LUs + RAIDGroups))) / 1024
ETERNUS DX400/DX400 S2 series ETERNUS DX8000/DX8000 S2 series	outputDays * (((0.1 + 0.2 * DEs + 0.1 * CAPorts + 0.2 * (LUs + RAIDGroups) + 0.1 * CMCPUs) * (86400 / perfMonitorInterval)) + (0.9 + 0.8 * DEs + 0.2 * CAPorts + 0.4 * (LUs + RAIDGroups) + 0.1 * CMCPUs)) / 1024
ETERNUS2000	outputDays * (((0.1 + 0.2 * DEs + 0.1 * CMPorts + 0.2 * (LUs + RAIDGroups)) * (86400 / perfMonitorInterval)) + (0.2 + 0.3 * DEs + 0.2 * CMPorts + 0.4 * (LUs + RAIDGroups))) / 1024
ETERNUS4000 models 300 and 500	outputDays * (((0.3 + 0.4 * DEs + 0.1 * CAPorts + 0.2 * (LUs + RAIDGroups)) * (86400 / perfMonitorInterval)) + (0.9 + 0.8 * DEs + 0.2 * CAPorts + 0.4 * (LUs + RAIDGroups))) / 1024
ETERNUS4000 models 400 and 600	Refer to the formula of ETERNUS DX400/DX400 S2 series.
ETERNUS8000 models 700, 900, 1100 and 2100	Refer to the formula of ETERNUS4000 models 300 and 500.
ETERNUS8000 models 800, 1200 and 2200	Refer to the formula of ETERNUS DX400/DX400 S2 series.
Fibre Channel switches	outputDays * (0.1 + FCPorts + (0.1 * FCPorts)) + (0.1 + ports + (0.1 * FCPorts * (86400 / perfMonitorInterval)) / 1024

See

Refer to "Performance information operation command (storageadm perfdata)" in the ETERNUS SF Storage Cruiser Operation Guide for information on the command.