Number of users per server
Posted on 2011-10-06
I'm migrating 2250 users from 5 apple xserves onto a windows server 2008 r2 backend - main reasons for this are 1: AFP is useless, 2: xserve is now eol.
I've specced the following server:
2 x Intel Xeon X5650 Processor (2.66GHz, 6C, 12M Cache, 6.40 GT/s QPI, 95W TDP, Turbo, HT), DDR3-1333MHz
1 Riser with 2 PCIe x8 + 2 PCIe x4 Slots
1 PE R710 Rack Bezel
1 16GB Memory for 2CPU (4x4GB Dual Rank LV RDIMMs) 1333MHz
2 300GB SAS 6Gbps 15k 3.5" HD Hot Plug
1 PERC H700 Integrated RAID Controller, 512MB Cache, For x6 Backplane
1 16X DVD-ROM Drive SATA
2 2M Rack Power Cord C13/C14 12A
1 High Output Redundant Power Supply (2 PSU) 870W, Performance BIOS Setting
1 Broadcom NetXtreme II 5709 Quad Port Gigabit Ethernet NIC PCIe x4
1 Embedded Broadcom GbE LOM with TOE and iSCSI Offload HW Key
1 iDRAC6 Express
1 Sliding Ready Rack Rails with Cable Management Arm
1 C3 MSS R1 for SAS6iR/PERC 6i/H200/H700, Exactly 2 Drives
Previously users were spread over 5 xserves to limit the impact of the afp process failing. I have 1000 computers, so that is around the max concurrent connections.
Storage is provided by a 4gb/s FC SATA 7.2k san on raid 10 (10 spindles) for around 2000 users, the remainder are on a 4gb/s FC SATA 7.2k san on raid 5 (8 spindles) remaining ~250
I know the san is not the best - it was purchased without my input, so i have to work with it.
Plan is to team all 4 NICs into the core network.
Clients are around 80% Mac 20% Windows. Macs use pure network home folders, windows use home folders and roaming profiles with redirected desktops, documents etc.
Educational environment, so users are moving around, logging in up to 8 times per day.
My initial thought was to get 2 of these servers and split the users between them.
average iops across the 5 xserves added together are ~1400
Any thoughts / suggestions?