Repurposing a HP MicroServer N36L as an SAS/DAS Drive Enclosure
So, I have a Dell T3610 I've been meaning to use as a base for my next Linux KVM host. It's got the processing power and memory, but not much physical disk storage.
Linux dmesg dump:
I decided on getting some sort of external disk enclosure, but one that exposed the individual disks so I could still us a 4-disk BTRFS RAID10 array that existed in my 'old' KVM host.
Not many modern encloses seemed to offer this, with most just exposing a USB port. I decided the best course of action was to procrastinate on the problem for a while and sure enough, a week or so later, I came across my old HP MicroServer, languishing in an upstairs wardrobe. I'd had a chat with a friend about NAS/DAS solutions and he'd mentioned SAS, which I hadn't really heard of / understood before then. A quick dismantle of the N36L revealed it connected it's 4-disk array to it's clapped out motherboard via a Mini-SAS connector.
Amazon came through with an "Internal Mini SAS SFF8087 to External SFF8088" adapter that would let me expose an SAS port on the back of the MicroServer (https://www.amazon.co.uk/gp/product/B01GT3ZDWQ) and ebay gave me an "SAS9201-16e 16-Port 6Gbps SAS Card". This card went into the Dell T3610 and a SAS cable connected the two.
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| Dell T3610 with N36L DAS |
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| SAS cable/ports |
Linux dmesg dump:
[ 3.663924] mpt2sas_cm0: 64 BIT PCI BUS DMA ADDRESSING SUPPORTED, total mem (32831392 kB) [ 4.323141] mpt2sas_cm0: CurrentHostPageSize is 0: Setting default host page size to 4k [ 4.323154] mpt2sas_cm0: MSI-X vectors supported: 1 [ 4.323157] mpt2sas_cm0: 0 1 [ 4.323209] mpt2sas_cm0: High IOPs queues : disabled [ 4.323211] mpt2sas0-msix0: PCI-MSI-X enabled: IRQ 44 [ 4.323214] mpt2sas_cm0: iomem(0x00000000fb39c000), mapped(0x00000000ac800950), size(16384) [ 4.323216] mpt2sas_cm0: ioport(0x000000000000d000), size(256) [ 4.899088] mpt2sas_cm0: CurrentHostPageSize is 0: Setting default host page size to 4k [ 4.899092] mpt2sas_cm0: sending message unit reset !! [ 4.915081] mpt2sas_cm0: message unit reset: SUCCESS [ 5.203082] mpt2sas_cm0: scatter gather: sge_in_main_msg(1), sge_per_chain(9), sge_per_io(128), chains_per_io(15) [ 5.203585] mpt2sas_cm0: request pool(0x00000000bbae9029) - dma(0x839400000): depth(30127), frame_size(128), pool_size(3765 kB) [ 6.265715] mpt2sas_cm0: sense pool(0x000000006c47858d)- dma(0x835400000): depth(29868),element_size(96), pool_size(2800 kB) [ 6.266223] mpt2sas_cm0: config page(0x00000000c3388a74) - dma(0x835b71000): size(512) [ 6.266225] mpt2sas_cm0: Allocated physical memory: size(14663 kB) [ 6.266226] mpt2sas_cm0: Current Controller Queue Depth(29865),Max Controller Queue Depth(32455) [ 6.266228] mpt2sas_cm0: Scatter Gather Elements per IO(128) [ 6.330063] mpt2sas_cm0: overriding NVDATA EEDPTagMode setting [ 6.330507] mpt2sas_cm0: LSISAS2116: FWVersion(20.00.07.00), ChipRevision(0x02), BiosVersion(07.39.02.00) [ 6.330509] mpt2sas_cm0: Protocol=(Initiator,Target), Capabilities=(TLR,EEDP,Snapshot Buffer,Diag Trace Buffer,Task Set Full,NCQ) [ 6.332068] mpt2sas_cm0: sending port enable !! [ 7.924037] mpt2sas_cm0: hba_port entry: 00000000b54c2c42, port: 255 is added to hba_port list [ 7.926852] mpt2sas_cm0: host_add: handle(0x0001), sas_addr(0x5000d310004deb0d), phys(16) ... [ 13.799113] mpt2sas_cm0: port enable: SUCCESS [ 13.799344] sd 0:0:0:0: Attached scsi generic sg3 type 0 [ 13.799407] sd 0:0:0:0: Power-on or device reset occurred [ 13.799459] sd 0:0:1:0: Attached scsi generic sg4 type 0 [ 13.799470] sd 0:0:1:0: Power-on or device reset occurred [ 13.799592] sd 0:0:2:0: Attached scsi generic sg5 type 0 [ 13.799625] sd 0:0:2:0: Power-on or device reset occurred [ 13.799741] sd 0:0:3:0: Attached scsi generic sg6 type 0 [ 13.799750] sd 0:0:3:0: Power-on or device reset occurred [ 13.801510] sd 0:0:0:0: [sdc] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB) [ 13.801511] sd 0:0:0:0: [sdc] 4096-byte physical blocks [ 13.801517] sd 0:0:1:0: [sdd] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB) [ 13.801518] sd 0:0:1:0: [sdd] 4096-byte physical blocks [ 13.801802] sd 0:0:2:0: [sde] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB) [ 13.801803] sd 0:0:2:0: [sde] 4096-byte physical blocks [ 13.801894] sd 0:0:3:0: [sdf] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB) [ 13.801895] sd 0:0:3:0: [sdf] 4096-byte physical blocks [ 13.804507] sd 0:0:0:0: [sdc] Write Protect is off [ 13.804509] sd 0:0:0:0: [sdc] Mode Sense: 7f 00 10 08 [ 13.804512] sd 0:0:1:0: [sdd] Write Protect is off [ 13.804514] sd 0:0:1:0: [sdd] Mode Sense: 7f 00 10 08 [ 13.805324] sd 0:0:0:0: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 13.805397] sd 0:0:1:0: [sdd] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 13.805718] sd 0:0:2:0: [sde] Write Protect is off [ 13.805719] sd 0:0:2:0: [sde] Mode Sense: 7f 00 10 08 [ 13.805851] sd 0:0:3:0: [sdf] Write Protect is off [ 13.805852] sd 0:0:3:0: [sdf] Mode Sense: 7f 00 10 08 [ 13.806596] sd 0:0:2:0: [sde] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 13.806724] sd 0:0:3:0: [sdf] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 13.934717] sd 0:0:3:0: [sdf] Attached SCSI disk [ 13.939345] sd 0:0:2:0: [sde] Attached SCSI disk [ 14.012610] BTRFS: device fsid 98aa5eae-4308-4318-8fa3-93e5ac03d148 devid 1 transid 64705 /dev/sde [ 14.019257] BTRFS: device fsid 98aa5eae-4308-4318-8fa3-93e5ac03d148 devid 3 transid 64705 /dev/sdf [ 14.230732] sd 0:0:1:0: [sdd] Attached SCSI disk [ 14.245523] sd 0:0:0:0: [sdc] Attached SCSI disk [ 14.274241] BTRFS: device fsid 98aa5eae-4308-4318-8fa3-93e5ac03d148 devid 2 transid 64705 /dev/sdd [ 14.304361] BTRFS: device fsid 98aa5eae-4308-4318-8fa3-93e5ac03d148 devid 4 transid 64705 /dev/sdc [ 14.352552] alua: device handler registered [ 14.353352] emc: device handler registered [ 14.354477] rdac: device handler registered [ 14.415260] BTRFS info (device sde): disk space caching is enabled [ 14.415262] BTRFS info (device sde): has skinny extents
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