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VincentNguyenQu's avatar
Feb 04, 2013

RND4000-200 vs RNDU6000 general questions

Good morning,

I'm currently revisiting my NAS setup, with the objective of reducing power consumption while keeping a decent level of performance (my current setup is a full blown server, with an LSI 8 ports PCI-E board, achieving 50MB/s write performance, at the expense of power consumption and maintenance complexity). Usage is strictly internal home, so HDD spin down is OK

To that end I'm considering both the RND4000-200 and the RNDU-6000, to be fitted with 3TB HDD

Hence the questions:
- I have not seen any figure of power consumption in idle mode with hdd spindown, for both products, would anyone have that ?
- when in spin down mode, how much time does it take for the storage to be accessible again ?
- can both products support 3TB HDD (it would seem to, based on the compatibility list)
- is the RAID mode compatible between units, for example if I create an X-RAID array on the RND4000-200, can I then transfer the HDDs on the bigger RNDU6000 unit ?
- where is the OS stored, in the case of the ReadyNAS Duo, the running copy is actually on a small space of the HDDs, is this also the case for both RND4000 and RNDU6000, or does it run from another storage medium (NAND or otherwise)

Many thanks

Vincent Nguyen

2 Replies

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  • - I don't, but I would not expect a whole of difference, and what difference there is would be the extra drives and bigger cpu. I can't imagine that it would be significant though.
    - it would be dependent on the drives themselves, I would expect most drives to spin up within 5-15 seconds.
    - yes both support 3+ tb drives, note however there are currently 2 types of expansion limits;
    -- an 8 tb expansion limit, meaning from whatever initial size volume, the current max expansion is original volume + 8tb
    -- 16tb volume size limit, in order to have larger than 16tb volume, you must currently factory default with all disks in place and restore data from backup
    - the raid formats are compatible across the same cpu architecture, so x86 devices are compatible with each other, sparc devices are compatible with each other, ARM devices are compatible with each other. X86 are not compatible with ARM or SPARc, nor are ARM and SPARc compatible.
    - all readynas store the OS/config on the disks, so you can migrate the disks to a replacement or different (compatible) device and they should work fine, providing there are no problems with the disks themselves.
  • I actually found some info on storagereview : there is quite a delta with HDD spindown between the two products.

    RNDU6000: 33 HDD off , 68 idle, HDD on, 74 in active mode
    RND4000-200: 12 HDD off, 20 idle, 24 in active mode

    Comparison is only really valid with HDD off, because of the two additionnal bays on the RNDU6000.

    http://www.storagereview.com/netgear_readynas_ultra_6_review_rndu6000
    http://www.storagereview.com/netgear_readynas_nv_v2_review

    The processor difference plays a big role here. Of course performance is not the same.

    Thanks for the other information, I'll look into it further

    Regards

    Vincent

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