D0 Disk Array Replacement on d0ora2 May 20, 2005

What we Need Redundant Hardware Path Failover Load Balancing Growth to 10TB The Right Number of Spindles Good Support Good Price Ease of Maintenance

What We Have - FC4500 Dual 1Gb Paths w/Failover and Dynamic Load Balancing 2GB Processor Cache Size - 2.8TB now, with growth to 18.1TB 80 Drives (50 of them 73gb) making up 16 file systems Managing Software Shared w/CDF 1 Host Connection per SP EOL 12/2002, EOSL 9/2008

Some Options Do Nothing StorageTek D240 new Sun StorEdge 3510 new EMC Clariion CX400 used EMC Clariion CX500 new

Do Nothing Pros No Cost Array was 70% replaced in 01/04 Continuing Hardware Support with 3 rd party EOSL 9/2008 Some growth available Cons Same Hardware Support Concerns

StorageTek D240 Pros New Hardware Sun to Acquire Company 4 – 2Gb Paths per SP 3.65TB - with 50 73GB Drives 112 Drive Capacity – 16.3TB Max Global Hot Spares Cons Price - $100k 1GB SP Cache Separate Management Software and software support contract

Sun StorEdge 3510 Pros 4 – 2Gb Paths per SP Sun Support – same as System 5.25TB – with GB Drives Hardware & Software Maintenance Covers both System & Array Cons Price - $48k New 1GB SP Cache No Global Hot Spares – 1 needed per 12 drives

EMC Clariion CX400 Pros 4 - 2Gb path per SP 4.5TB – with 15 73GB & GB Drives Supports 320GB ATA Drives 75 drive Capacity 4 or 8GB SP Cache Same Support Software & Software Contract Cons Price - $92k Refurbished

EMC Clariion CX500 Pros 4 - 2Gb path per SP 4.5TB – with 15 73GB & GB Drives Supports 320GB ATA Drives 120 Drive Capacity 4 or 8GB SP Cache Same Support Software & Software Contract Cons Price - $137k new