Sun Microsystems 96257 manual Model Numbers / Configurations / Capacities

Configuration Planning

Model Numbers / Configurations / Capacities

Table 2-4. VSM5-VTSS Model Numbers / Configurations / Capacities

Base	Disk Arrays	Data Drives*	Capacity	PCap	Published	Actual	PCap
Model			Feature		Effective 4:1	Effective 4:1	Utiliza-
	Configuration	Total Capacity		Capacity#
Number			Code		Capacity	Capacity‡	tion#
			Base model	330GB	1250GB	1320GB	8.8%
		3737.6 GB	VC15	660GB	2500GB	2640GB	17.7%
	2 x 13 + 2 + 1	(1:1 uncompressed)	VC16	1320GB	5000GB	5280GB	35.3%
VSMB-465		---------
	(32 drives*)		VC21	1970GB	7500GB	7880GB	52.7%
		14,950.4 GB
		(4:1 compression)
			VC18	2890GB	11,000GB	11,560GB	77.3%
			VC19	3551GB	14,000GB	14,203GB	95.0%
		5606.4 GB	Base model	4200GB	16,000GB	16,800GB	74.9%
	3 x 13 + 2 + 1	(1:1 uncompressed)
VSMC-465		---------	VC22	4730GB	18,000GB	18,920GB	84.4%
	(48 drives*)
		22,425.5 GB
			VC23	5326GB	21,000GB	21,304GB	95.0%
		(4:1 compression)
		7475.2 GB	Base model	6040GB	23,000GB	24,160GB	80.8%
	4 x 13 + 2 + 1	(1:1 uncompressed)
VSMD-465			VC24	6570GB	25,000GB	26,280GB	87.9%
		---------
	(64 drives*)
		29,900.7 GB
			VC25	7101GB	28,000GB	28,406GB	95.0%
		(4:1 compression)

Notes:

• Abbreviations key: GB = gigabyte(s) (109 bytes); PCap = Physical Capacity Control feature

• * 32-drive configuration = 26 data drives, 4 parity drives, 2 spare drives, 30 read actuators, and 13 write actuators; 48-drive configuration = 39 data drives, 6 parity drives, 3 spare drives, 45 read actuators, and 13 write actuators; 64-drive configuration = 52 data drives, 8 parity drives, 4 spare drives, 60 read actuators, and 13 write actuators.

• # PCAP utilization is the sum of PCap capacity divided by the uncompressed capacity of all data drives in a base model. Example: Model VSMB-465 with capacity feature VC15 has a PCap capacity of 660GB and a data drive ca- pacity of 3737.6GB (13 drives), or a 17.7% utilization rate. PCap utilization is capped to a maximum of 95% to en- sure at least 5% of data drive space is available for free space collection.

• ‡ Actual effective 4:1 capacity = PCap capacity with 4:1 compression, based on number of data drives per array (13) x number of arrays (2, 3, or 4) x base capacity per drive (143.75GB).

2-34	Sun Confidential: Internal Only	96257
	Revision A